Relevant bibliographies by topics / Laelia

Academic literature on the topic 'Laelia'

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Published: 25 July 2024
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Journal articles on the topic "Laelia"

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Castellanos-Ramírez, Montserrat, Ulises Rosas, María Concepción Guzmán-Ramos, and Estela Sandoval-Zapotitla. "Contribution of Morphoanatomic Characters to the Taxonomy of the Genus LAELIA (Orchidaceae) in Mexico and Their Implication in Environmental Adaptation." Plants 12, no. 5 (March 1, 2023): 1089. http://dx.doi.org/10.3390/plants12051089.

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The Laeliinae Subtribe (Epidendroideae-Orchidaceae) is exclusively Neotropical, composed of 43 genera and 1466 species, presenting great floral and vegetative diversity. The genus Laelia has restricted geographic distribution, with species in Brazil and Mexico. However, in molecular studies, the Brazilian species have not been included despite remarkably similar floral structures in both Mexican and Brazilian groups of species. The main objective of the present study is to analyze vegetative structural characters of 12 species of Laelia in Mexico to find similarities to recognize them as a taxonomic group and their relationship with possible ecological adaptations. This work supports the proposal to recognize 12 species of Laelias from Mexico as a taxonomic group (except for the new species recognized as Laelia dawsonii J. Anderson), since a strong similarity was found, translated by 90% of structural characters shared by the Mexican Laelias, given the relationship between the structural characters and the altitudinal distribution in which the groups of Mexican Laelias species are found. We propose that Laelias of Mexico be recognized as a taxonomic group and their structural characteristics allow for better understanding of adaptation of species to their environment.
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Olivares-Juárez, Ma Isabel, Mireya Burgos-Hernández, and Margarita Santiago-Alvarádo. "Patterns of Species Richness and Distribution of the Genus Laelia s.l. vs. Laelia s.s. (Laeliinae: Epidendroideae: Orchidaceae) in Mexico: Taxonomic Contribution and Conservation Implications." Plants 11, no. 20 (October 17, 2022): 2742. http://dx.doi.org/10.3390/plants11202742.

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Laelia is an endemic genus of the neotropical region, with the greatest richness occurring in Mexico. A recent phylogenetic study transferred some Mexican laelias to the genus Schomburgkia, which has generated debate. The aim of the present study was to analyze the patterns of species richness and endemism and the current and potential geographic distributions of the taxa of Laelia s.l., as well as the putative Laelia s.s., distributed in Mexico as part of an exploratory evaluation of the generic limits to sheds light on the taxonomic debate and generate baselines to guide conservation efforts. A database was generated with information from herbarium specimens and publications. The species richness was estimated by political division, biomes, and elevation. The endemism was analyzed by political division and using the weighted and corrected weighted endemism indices. Geographic data, climatic, and topographic variables were used to predict the distributions with the maximum entropy algorithm. The results supported the proposal to transfer some species to the genus Schomburgkia. Some areas of the Sierra Madre del Sur and Oriental should be included as priority areas in the conservation strategies of Laelia. This study highlights the importance of the taxonomy, distribution, and hotspots in diversity conservation.
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Salazar, Gerardo A., Rolando Jiménez-Machorro, Héctor M. Huerta, and Eric Hágsater. "A new species and a new natural hybrid of Laelia (Orchidaceae) from Oaxaca, Mexico." Phytotaxa 178, no. 3 (September 17, 2014): 161. http://dx.doi.org/10.11646/phytotaxa.178.3.1.

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A new species, Laelia halbingeriana, and a new natural hybrid, Laelia ×oaxacana, both from the Sierra Madre Oriental in northern Oaxaca, Mexico, are described and illustrated. Laelia halbingeriana is similar to L. superbiens, from Chiapas through Nicaragua, differing in the proportionately shorter, stouter pseudobulbs, low, entire, distally white keels of the labellum and obscurely bilobed anther. Laelia ×oaxacana is applied to a hybrid swarm between L. halbingeriana and sympatric L. anceps. The hybrid can be distinguished from L. halbingeriana by the distichous (vs. spiral) raceme and the spreading petals oriented vertically (vs. distinctly arcuate and oriented horizontally), and from L. anceps in the stouter plants with two-leaved pseudobulbs and the proportionately narrower, waved sepals and petals.
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Brito, A. L. Toscano, and Sarah Robbins. "LAELIA BAHIENSIS: Orchidaceae." Curtis's Botanical Magazine 9, no. 3 (August 1992): 116–20. http://dx.doi.org/10.1111/j.1467-8748.1992.tb00080.x.

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Mayo-Mosqueda, Alberto, Eleazar García-Hernández, Eliana Noguera-Savelli, William Cetzal-Ix, and Fulgencio Alatorre-Cobos. "Advances in Breeding, Bioprospecting, and In Vitro Culture of Laelia Orchid Species." Horticulturae 8, no. 2 (January 25, 2022): 103. http://dx.doi.org/10.3390/horticulturae8020103.

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Orchids (Orchidaceae) are plants that are highly appreciated by their beautiful flowers worldwide. Moreover, they represent a source of metabolites with applications in medicine and biotechnology. Within the Orchidaceae family, the Laelia genus is a group of orchid species from the Neotropics and is probably one of the most representative genera of America. Laelia orchids are cultivated by their splendid flowers and are widely used in orchid breeding. Here, we revise the use of the Laelia genus in orchid breeding and metabolite bioprospecting. We also analyze the use of plant tissue culture (PTC) as an alternative to conventional propagation and as a strategy for the recovery of those Laelia species threatened with extinction. We summarize and discuss the recent advances in the application of different PTC techniques for mass multiplication based on asymbiotic germination, organogenesis, protocorm-like bodies development, and somatic embryogenesis, and the advances of in vitro conservation by cryoconservation and the use of slow-growth promoting hormones. Finally, we suggest future directions and venues in research for Laelia species.
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SOLANO, RODOLFO, HÉCTOR HUERTA-ESPINOZA, GABRIELA CRUZ-GARCÍA, and FRANCO ORTIZ-RIVEROS. "A new natural hybrid in the genus Laelia (Orchidaceae) from Oaxaca, Mexico." Phytotaxa 402, no. 5 (May 6, 2019): 232. http://dx.doi.org/10.11646/phytotaxa.402.5.2.

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A new natural hybrid in the genus Laelia, from the Mixtec region in Oaxaca state, Mexico, is described and illustrated. Laelia × tlaxiacoensis is the name given to a hybrid between L. albida and L. furfuracea. Both Laelia species are sympatric in the region where the hybrid comes from and they coincide in their bloom season. The hybrid looks like a plant of L. albida bearing an inflorescence from L. furfuracea. Laelia × tlaxiacoensis differs from L. albida by its lilac flowers, less floriferous raceme, rhombic and erect petals, and the labellum narrower at the mid-lobe than across the lateral lobes spread out. From L. furfuracea, the hybrid differs by its longer inflorescence, proportionally narrower leaves, orbicular labellum, and straight column. Information about distribution, habitat, phenology, and conservation status for the new hybrid is provided. A potential distribution model was generated for the putative parents of L. × tlaxiacoensis, showing the region where both become sympatric and the occurrence of the new hybrid in it.
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Archila, Fredy, Guy Chiron, Dariusz Szlachetko, Vincenzo Bertolini, and Eduardo A. Pérez-García. "Laelia mottae (Orchidaceae): una especie nueva del complejo de Laelia anceps Lindl." Botanical Sciences 92, no. 3 (August 14, 2014): 343. http://dx.doi.org/10.17129/botsci.113.

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<p>Se describe e ilustra una especie nueva del género <em>Laelia</em>: <em>L. mottae</em> Archila, Chiron, Szlach. &amp; E.A. Pérez-García. Durante muchos años esta especie se consideró como una variante enana de <em>Laelia anceps</em>; sin embargo, el análisis de ejemplares, tanto silvestres como cultivados, permitió establecer que en realidad se trata de dos especies. <em>Laelia mottae</em> es exclusiva del sureste de Guatemala y del sur de Honduras. Se comparan los principales caracteres morfológicos de <em>L. anceps</em> y <em>L. mottae</em>, y se discuten las diferencias en su distribución, hábitat y cultivo.</p>
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Bassett, Mark J. "Pleiotropic Effects of gri on Seed Coat and Flower Color in Common Bean." HortScience 27, no. 3 (March 1992): 254–56. http://dx.doi.org/10.21273/hortsci.27.3.254.

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The effects of gri on seed coat and flower color were investigated in a study using Lamprecht line V0400 (PI 527735) as the known source of gri. Seed and flower color data were taken on observations of F2, BC1-F2, and BC2,-F2 populations from crosses of V0400 with the recurrent parent S-593. Segregation was observed for a unique flower color pattern: wing petals have a very pale tinge of blue (laelia), and the banner petal has two violet dots (≈3- to 4-mm diameter) on a nearly white background. This very pale laelia flower color cosegregates with gray-white seed coats produced by gri. Furthermore, the very pale laelia color depends on the action of V for expression and is extinguished by v, which produces pure white flowers. Thus, it was demonstrated that the very pale laelia flower color, for which Lamprecht tentatively proposed the gene symbol vpal, is not controlled by an allele at V but is a pleiotropic effect of gri. It was also demonstrated that Lamprecht line V0060 (PI 527717) carries vlae, not v, as indicated by the genotypic notes accompanying the Lamprecht seed collection.
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CETZAL-IX, WILLIAM, GERMÁN CARNEVALI, ROLANDO JIMÉNEZ-MACHORRO, and EDUARDO A. PÉREZ-GARCÍA. "Laelia × meavei: A new natural hybrid between L. dawsonii fo. dawsonii and L. rubescens fo. peduncularis (Orchidaceae: Laeliinae) from Oaxaca, Mexico." Phytotaxa 446, no. 2 (May 27, 2020): 81–94. http://dx.doi.org/10.11646/phytotaxa.446.2.1.

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We describe and illustrate a new nothospecies in the genus Laelia: L. × meavei Cetzal & E.A. Pérez-García. This new taxon is most likely the result of the introgression between Laelia rubescens fo. peduncularis and L. dawsonii fo. dawsonii. The description of L. × meavei is based on cultivated plants coming from a single locality: Sola de Vega, Oaxaca, on Mexico’s Sierra Madre del Sur. One of the putative parents, L. dawsonii fo. dawsonii, is widely cultivated in the region and known in the wild, but current wild populations are small and scattered. In turn, L. rubescens is typically a lowland species, but in this region it is known to grow at higher elevations and these populations are referable to L. rubescens fo. peduncularis. Flowers of Laelia × meavei are similar to those of L. rubescens, but they are larger and longer lasting, whereas the plants look more like a small L. dawsonii fo. dawsonii. Furthermore, to be consistent with the broad circumscription of Laelia followed here, we provide a new combination for the recently described Encarbacenia perezgarciae Archila & Szlachetko. Finally, the following new combination is proposed, L. dawsonii fo. chilapensis (Soto-Arenas) E.A. Pérez-García & Cetzal.
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Peraza-Flores, LizandroN, Germ�n Carnevali, and C�ssio van den Berg. "A molecular phylogeny of the Laelia alliance (Orchidaceae) and a reassessment of Laelia and Schomburgkia." Taxon 65, no. 6 (December 1, 2016): 1249–62. http://dx.doi.org/10.12705/656.3.

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Dissertations / Theses on the topic "Laelia"

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COSTA, T. S. "CARACTERIZAÇÃO ANATO-FISIOLÓGICA DE Cattleya guttata Lindl. E Laelia tenebrosa Rolf. (ORCHIDACEAE): EFEITO DA RADIAÇÃO." Universidade Federal do Espírito Santo, 2014. http://repositorio.ufes.br/handle/10/5228.

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Este estudo objetivou investigar a estrutura anatômica foliar de Cattleya guttata Lindl. e Laelia tenebrosa Rolf. e, posteriormente, verificar a capacidade de aclimatação destas espécies por meio das respostas fisiológicas apresentadas por elas perante um ambiente com maior intensidade luminosa. Para a descrição anatômica foram utilizadas 5 plantas de cada espécie escolhidas aleatoriamente, e de cada indivíduo se retirou uma folha completamente expandida. Foram selecionadas amostras do terço médio da lâmina foliar, sendo realizadas secções transversais e paradérmicas. Para a análise da fluorescência transiente da clorofila a, foram utilizados 6 tratamentos em cada espécie: dia 0 (mensuração da fluorescência realizada no orquidário de João Neiva/ ES, com densidade de fluxo de fótons de 300 μmol m-2s-1), 1 dia, 3 dias, 7 dias, 11 dias e 95 dias após a transferência das plantas para o orquidário do CEUNES (densidade de fluxo de fótons era de 1225 μmol m-2s-1). A análise anatômica das folhas detectou a ocorrência de caracteres que podem ser interpretados como adaptações à economia de água e a manutenção estrutural da folha. Ambas são hipoestomáticas, exibem estômatos com poro protegido por projeções, feixes vasculares envolvidos por fibras pericíclicas e cutículas epidérmicas espessas, em ambas as faces foliares. Além destas caracteristicas, C. guttata, em sua estrutura anatômica, apresentou uma elevada densidade de estômatos, cutícula adaxial com maior espessura e parede hipodérmica mais espessa que L. tenebrosa. A análise dos transientes O-L-K-J-I-P e dos parâmetros do teste JIP indicaram ao final do período de 95 dias em um ambiente com maior incidência de luz, a aclimatação das duas espécies estudadas. Observou-se que as espécie C. guttata e L. tenebrosa, não apresentaram danos nos mecanismos fotoquímicos relacionados ao FSII e ao FSI. Neste sentido, possivelmente as estruturas anatômicas apresentadas pelas espécies estudadas contribuíram para que as plantas não sofressem danos severos em seus aparatos fotoquímicos ao serem transferidas para um ambiente com maior luminosidade.
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OLIVARES, AGUILAR JUAN MANUEL. "Evaluación del ácido salicílico en la aclimatación ex vitro de microplantas de Laelia autumnalis (Lex.) Lind., Epidendrum sp. y Encyclia sp." Tesis de Licenciatura, UNIVERSIDAD AUTONOMA DEL ESTADO D EMEXICO, 2020. http://hdl.handle.net/20.500.11799/110584.

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La familia Orchidaceae tiene gran distribución y diversidad en el país y en el Estado de México, es una de las más amenazadas por el cambio de uso de suelo y tráfico ilegal de ejemplares. Entre las técnicas de conservación ex situ se encuentra la multiplicación in vitro, donde se obtienen miles de ejemplares, pero existe una gran tasa de mortandad en el proceso de aclimatación ex vitro donde el desarrollo de las raíces y la biomasa son necesarios para lograr un mayor porcentaje de supervivencia. En décadas recientes el ácido salicílico (AS), se ha estudiado por su efecto en la respuesta ante estrés biótico y abiótico; por lo que el propósito de este trabajo es utilizar AS en condiciones in vitro para favorecer la aclimatación y supervivencia ex vitro de microplantas de Laelia autumnalis, Epidendrum sp. y Encyclia sp. Microplantas de L. autumnalis, Epidendrum sp. y Encyclia sp. se sembraron en medio Murashige-Skoog (MS) adicionando con 0, 1, 10 y 100 μM de AS cultivándose durante 120 ± 4 días. Concluido el tiempo se evaluó la longitud del tallo y raíz, peso fresco de la planta, se cuantificó el contenido fenólico y actividad enzimática de las peroxidasas en hoja y la raíz. Posteriormente las plantas se trasplantaron a almácigos y se mantuvieron en condiciones para su aclimatación ex vitro, se evaluó la supervivencia 30 días después. Los resultados fueron analizados por promedios +/- error estándar en una prueba ANOVA Duncan (α= 0.05). Microplantas de las tres especies tratadas con AS incrementaron el peso fresco siendo el tratamiento de AS 10 μM el mayor en las tres especies. En las tres especies, las microplantas tratadas con AS 10 μM presentaron un incremento significativo en el contenido fenólico en las hojas, por el contrario, el contenido disminuyo en la raíz respecto al control. Las microplantas tratadas con AS en las tres especies presentaron respuestas diferenciales en los diferentes parámetros evaluados. Microplantas de Epidendrum sp. y Encyclia sp. tratadas con AS muestran un incremento en la longitud de tallo, la raíz y en la actividad enzimática de las peroxidasas en las raíces mientras que en 7 L. autumnalis éstas disminuyeron respecto a su control. Microplantas de L. autumnalis y Encyclia sp. tratadas con AS señalan un incremento en la actividad enzimática peroxidasa en las hojas, en Epidendrum sp. esta disminuyó. Microplantas de L. autumnalis tratadas con AS disminuyeron el contenido fenólico en las raíces respecto al control. En Epidendrum sp. y Encyclia sp. el tratamiento de AS 1 μM incrementó el contenido de fenoles en hoja y raíz respecto a su control y presentan valores similares. El conjunto de las respuestas inducidas por el AS indujo tolerancia ante estrés, lo que permitió un aumento significativo en la supervivencia con respecto al testigo en las tres especies.
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Stancato, Giulio Cesare. "Assimilação e partição do carbono na orquidea epifita (Cattleya forbesii. X Laelia tenebtosa Rolfe) sob influencia da luz e do deficit hidrico." [s.n.], 1999. http://repositorio.unicamp.br/jspui/handle/REPOSIP/315457.

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Orientadores: Paulo Mazzafera, Marcos Silveira Buckeridge
Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Biologia
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Resumo: Estudos sobre a interação de plantas com o ambiente são importantes para o entendimento dos processos relacionados ao crescimento e desenvolvimento, estando as orquídeas epífitas brasileiras entre as plantas menos conhecidas nesses aspectos. Dessa forma, o objetivo deste trabalho foi estudar as respostas fisiológicas e metabólicas da orquídea epífita C. forbesii X L. tenebrosa, quando submetida a diferentes graus de intensidade luminosa e a vários períodos de déficit hídrico. Foram realizados quatro ensaios independentes. No primeiro, folhas e pseudobulbos foram coletados ao longo do dia (O, 2, 5 e 8h de luz) e os carboidratos solúveis em álcool e em água foram analisados quantitativamente por técnicas colorimétricas (açúcares solúveis totais, açúcares redutores e sacarose) e qualitativamente, através da cromatografia descendente em papel e por HPLC dos monossacarídeos. No segundo, plantas cultivadas por 173 dias sob dois níveis de intensidade luminosa (22,5% e 90% da radiação fotossinteticamente ativa, RFA) tiveram a área foliar e o volume dos pseudobulbos monitorados ao longo desse período. No terceiro ensaio foram efetuadas medidas de fluorescência e de trocas gasosas durante uma noite e um dia, em folhas de plantas cultivadas sob 90% da RFA, sob 22,5% e em plantas cultivadas inicialmente sob 22,5% e transferidas para 90% após duas horas de luz. No quarto ensaio, algumas plantas foram submetidas a períodos de déficit hídrico por 25 e 45 dias. Nas folhas, foram avaliados os níveis da eficiência fotossintética e, em amostras de folhas e pseudobulbos foram determinados a atividade da invertase ácida e o conteúdo e composição dos carboidratos solúveis em água e em álcool. Neste experimento, alguns componentes das relações hídricas foram acompanhados: potencial osmótico, conteúdo relativo de água (CRA) e relação massa seca/massa fresca. O híbrido estudado exibiu características do metabolismo CAM, apresentando acúmulo de ácido málico durante a noite e sua mobilização durante o dia. Os resultados mostraram que tanto a folha como o pseudobulbo acumulam carboidratos solúveis em água (glucomananos) como composto de reserva mas não foi detectado amido em testes com iôdo e ao exame microscópico. Os resultados do primeiro ensaio sugerem que estes glucomananos são formados principalmente no pseudobulbo (pequena quantidade na folha) concomitantemente com a mobilização de ácido málico nas folhas, sugerindo que esta seria uma das formas de armazenar carbono, para ser posteriormente mobilizado. Embora as plantas cultivadas sob 22,5% da RFA tenham apresentado maiores taxas de crescimento, quando comparadas às plantas cultivadas sob 90%, tiveram seu desenvolvimento atrasado em 20 dias. A redução do desempenho fotossintético mostrada pelas plantas transferidas de 22,5% da RFA para 90% indica que sob 90% as plantas estariam sofrendo fotoinibição, talvez induzidas por altas temperaturas, não alterando os níveis de síntese de glucomananos. Provavelmente, a água e os glucomananos armazenados no pseudobulbo foram usados para manter a integridade celular enquanto a atividade fotossintética diminuia; os valores do CRA e da variação no potencial osmótico também indicam desidratação drástica dos tecidos, com conseqüências na inativação da invertase ácida e no fluxo de substâncias entre os órgãos, principalmente a sacarose
Abstract: Studies on the interaction of plants with their surrounding environment are important for the understanding of processes related to growth and development, the Brazilian orchids being among the less known group of plants in this respect. In this way, the objectives of the present work were to analyse the physiological and metabolic responses of the hibrid orchid Cattleya forbesii X Laelia tenebrosa under distinct light intensities and drought periods. Four independent essays were performed. In the first, leaves and pseudobulbs were collected along one day (O, 2, 5 and 8h of light) and their alcohol and water soluble carbohydrates were analysed quantitatively by co1orimetric techniques (total and reducing sugars and sucrose) and qualitatively by paper chromatography and High Performance Liquid Chromatography of monosaccharides. In the second, plants were cultivated during 173 days under different light intensities (22,5 and 90% of the Photosynthetically active radiation, PAR) and their leaf area and pseudobulb volume were evaluated. In the third essay, fluorescence and gas exchange were measured during a night and day period in leaves of plants cultivated under 90% PAR, 22.5% PAR and plants initially growing under 22.5% PAR and subsequently transferred to 90% PAR after 2h. In the fourth essay, some plants were exposed to 25 and 45 days of water stress. The photosynthetic efficiency was evaluated in leaves and the activity of acid invertase and the contents and composition of alcohol and water soluble carbohydrates were determinated in the sample of leaves and pseudobulbs. In this experiment, parameters of water relations were also measured: osmotic potential, relative content of water and dry/fresh weight ratios. The studied orchid presented characteristics of CAM metabolism, showing accumulation of malic acid during the night and mobilization during the day. The results showed that both leaves and pseudobulbs accumulate glucomannan as a storage compound but starch was not detectable in the extracts either by iodine or microscopic examinations. The results suggest that glucomannan is formed mainly the pseudobulb (some in the leaves) concomitantly with the mobilization of malic acid in the leaves, suggesting that this might be one of the ways to store carbon for further mobilization. Although plants cultivated under 22.5% PAR had presented higher growth rates when compared to the ones growing under 90% PAR, the first had its development retarded for almost 20 days. This might be related to photoinhibition due to damage induced by high temperatures, without however interfering with glucomannan metabolism. The water and glucomannan stored into the pseudobulbs were probably used to maintain cellular integrity whereas the photosynthetic activity decreased; the relative content of water and osmotic potential changed and a drastic dehydration occurred. All this influenced the inactivation of the acid invertase and the translocation of substances, mainly sucrose, between the plant organs
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Pan, Tien-Chien Burggren Warren W. "Metabolic, cardiac and ventilatory regulation in early larvae of the South African clawed frog, Xenopus laevis." [Denton, Tex.] : University of North Texas, 2009. http://digital.library.unt.edu/ark:/67531/metadc12175.

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Minshull, Jeremy Stephen. "Cynlins in Xenopus laevis." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293835.

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Pan, Tien-Chien. "Metabolic, cardiac and ventilatory regulation in early larvae of the South African clawed frog, Xenopus laevis." Thesis, University of North Texas, 2009. https://digital.library.unt.edu/ark:/67531/metadc12175/.

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Early development of O2 chemoreception and hypoxic responses under normoxic (150 mmHg) and chronically hypoxic (110 mmHg) conditions were investigated in Xenopus laevis from hatching to 3 weeks post fertilization. Development, growth, O2 consumption, ventilatory and cardiac performance, and branchial neuroepithelial cells (NEC) density and size were determined. At 3 days post fertilization (dpf), larvae started gill ventilation at a rate of 28 ± 4 beats/min and showed increased frequency to 60 ± 2 beats/min at a PO2 of 30 mmHg. Also at 3 dpf, NECs were identified in the gill filament buds using immunohistochemical methods. Lung ventilation began at 5 dpf and exhibited a 3-fold increase in frequency from normoxia to a PO2 of 30 mmHg. Hypoxic tachycardia developed at 5 dpf, causing an increase of 20 beats/min in heart rate, which led to a 2-fold increase in mass-specific cardiac output at a PO2 of 70 mmHg. At 10 dpf, gill ventilatory sensitivity to hypoxia increased, which was associated with the increase in NEC density, from 15 ± 1 to 29 ± 2 cells/mm of filament at 5 and 10 dpf, respectively. Unlike the elevated rate, cardiac and ventilatory volumes were independent of acute hypoxia. Despite increased cardioventilatory frequency, larvae experienced an average of 80% depression in during acute hypoxia. Chronic hypoxia (PO2 of 110 mmHg) decreased mass-specific cardiac performance before 10 dpf. In older larvae (10 to 21 dpf), chronic hypoxia decreased acute branchial and pulmonary hypoxic hyperventilation and increased NEC size. Collectively, these data suggest that larvae exhibit strong O2-driven acute hypoxic responses post-hatching, yet are still O2 conformers. All acute hypoxic responses developed before 5 dpf, and then the effects of chronic hypoxia started to show between 7 and 21 dpf. Thus, the early formation of acute hypoxic responses is susceptible to the environment and can be shaped by the ambient PO2.
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Tucker, Abigail Saffron. "Tail development in Xenopus laevis." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297296.

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Costa, R. "Endoderm patterning in Xenopus laevis." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.598012.

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The endoderm is the inner germ layer of the vertebrate embryo from which the respiratory and digestive systems are derived. These include organs such as the liver, pancreas, stomach, lungs and intestine. Recent research has helped our understanding of early vertebrate endoderm specification and terminal differentiation of specific endodermal lineages. However, very little is known about the molecular mechanisms that control endoderm patterning and morphogenesis during vertebrate development. As a way to identify genes involved in these elusive steps of development, I performed a differential hybridisation screen in a macroarray tailbud ventral foregut cDNA library coupled with in situ hybridisation analysis. My aim was to identify and characterise new regionally expressed endodermal genes in Xenopus laevis, a classical embryologic model organism. Here, I report the identification and characterisation of a dozen novel regionally expressed endoderm genes. At tailbud stages their expression patterns fall into three re-occurring domains; anterior ventral midgut endoderm, posterior endoderm and dorsal endoderm. In addition, regional expression of some of these genes is observable at gastrula stages, endoderm specification. These are the first early stable endodermal markers for different regions of the gastrula endoderm. This suggests that the earliest steps in endoderm patterning are concurrent with endoderm specification. Furthermore I describe the identification of a mesodermal transcription factor, which appears to be expressed in ‘early embryonic macrophages’ - and a poorly characterised embryonic cell population. I present an overview of endoderm development together with the results from my screen. Overall, these results reveal an unexpected degree of early endodermal patterning and assist our understanding of the link between early and late events of vertebrate endoderm development. In addition, this work provides us with new and very useful markers for endodermal patterning, and potentially some key developmental regulators of endodermal formation.
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Marklew, Sarah. "Retinoid receptors in Xenopus laevis." Thesis, University of Warwick, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283494.

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Benites, da Costa Ricardo Manuel. "Endodermal patterning in Xenopus laevis." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.616152.

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Books on the topic "Laelia"

1

Menezes, L. C. Laelia purpurata. Rio de Janeiro, RJ, Brazil: Editora Expressão e Cultura, 1995.

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Menezes, L. C. Laelia purpurata: A rainha = Laelia purpurata : the queen. Brasília: IBAMA, 2009.

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Garnett, Ruth. Laelia: A novel. New York: Washington Square Press, 2004.

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Canniccioni, François. Le sourire de Laelia. Chicoutimi, Québec: Éditions JCL, 2001.

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Nicola, Muschitiello, ed. Aelia Laelia: Il mistero della pietra di Bologna. Bologna: Il mulino, 2000.

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García, Rebeca Alicia Menchaca. Diagnóstico de la familia Orchidaceae en México: (Prosthechea citrina, Prosthechea vitellina, Stanhopea tigrina, Encyclia adenocaula, Laelia speciosa, Laelia gouldiana y Rhynchostele rossii). Chapingo, Texcoco, Estado de México: SAGARPA, Secretaría de Agricultura, Ganadería, Desarrollo Rural, Pesca y Alimentación, SNICS, SINAREFI, Sistema Nacional de Recursos Fitogenéticos para la Alimentación y la Agricultura, 2011.

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Bacchiega, Franca. Aelia Laelia: ...né questo, né quello, né altro... ma tutto questo. Milano: Garzanti, 2003.

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Halbinger, Federico. Laelias of Mexico. Mexico City: Herbario AMO, 1997.

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Illgen, Christian Friedrich. Symbolarum ad vitam et doctrinam Laelii Socini. Lipsiae: Frid. Christ. Guil. Vogelii, 1990.

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Vee, Elo. Laeka lähedus. Tallinn: Tuum, 1990.

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Book chapters on the topic "Laelia"

1

Bröer, Stefan. "Xenopus laevis Oocytes." In Methods in Molecular Biology, 295–310. Totowa, NJ: Humana Press, 2010. http://dx.doi.org/10.1007/978-1-60761-700-6_16.

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Joldersma, Patty. "Oefenprogramma mcl-laesie." In Oefenprogramma's voor de knie, 57–76. Houten: Bohn Stafleu van Loghum, 2018. http://dx.doi.org/10.1007/978-90-368-2192-6_5.

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Gradl, Dietmar. "Xenopus laevis (Südafrikanischer Krallenfrosch)." In Modellorganismen, 173–95. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-54868-4_7.

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Pomerening, Joseph R. "Xenopus laevis Egg Extract." In Encyclopedia of Systems Biology, 2364–65. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4419-9863-7_1331.

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Sastry, K. Subramanya, Bikash Mandal, John Hammond, S. W. Scott, and R. W. Briddon. "Moluccella laevis (Bells-of-Ireland)." In Encyclopedia of Plant Viruses and Viroids, 1547. New Delhi: Springer India, 2019. http://dx.doi.org/10.1007/978-81-322-3912-3_597.

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Lametschwandtner, Alois, and Bernd Minnich. "Materials and Methods." In Color Atlas of Adult Xenopus laevis, 5–20. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-05110-4_2.

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Lametschwandtner, Alois, and Bernd Minnich. "Microvasculature of Xenopus Tissues and Organs." In Color Atlas of Adult Xenopus laevis, 21–275. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-05110-4_3.

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Lametschwandtner, Alois, and Bernd Minnich. "Introduction." In Color Atlas of Adult Xenopus laevis, 1–3. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-05110-4_1.

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Wiechmann, Allan F., and Celeste R. Wirsig-Wiechmann. "Basic Tissues." In Color Atlas of Xenopus laevis Histology, 1–20. Boston, MA: Springer US, 2003. http://dx.doi.org/10.1007/978-1-4419-9286-4_1.

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Wiechmann, Allan F., and Celeste R. Wirsig-Wiechmann. "Cranial Structures." In Color Atlas of Xenopus laevis Histology, 89–128. Boston, MA: Springer US, 2003. http://dx.doi.org/10.1007/978-1-4419-9286-4_10.

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Conference papers on the topic "Laelia"

1

"Anais do II Simpósio da LAESI." In II Simpósio da LAESI. Revista Eletrônica Acervo Saúde, 2019. http://dx.doi.org/10.25248/reas.anais2087.

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Ferri, Fabio. "Low-Angle Elastic Light Scattering with a CCD Camera." In Photon Correlation and Scattering. Washington, D.C.: Optica Publishing Group, 1996. http://dx.doi.org/10.1364/pcs.1996.thc.3.

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Low-Angle Elastic Light Scattering (LAELS) has become over the last decade one of the most convenient technique to study many physical and chemical systems which present structural disorder on length scales comparable or larger that the wavelength of light. LAELS is not only of interest for basic research, but is also profitably used in many industrial applications, such as, for example, in the field of particle sizing, where dedicated machines are commercially available.
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Fogliano, Chiara, Bice Avallone, Chiara Maria Motta, and Rosa Carotenuto. "Influence of Benzodiazepine Delorazepam on Xenopus laevis Embryogenesis." In The 7th World Congress on Civil, Structural, and Environmental Engineering. Avestia Publishing, 2022. http://dx.doi.org/10.11159/iceptp22.194.

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Cao, Xiaohong, Chaolong Han, Lei Shi, and Xiaoye Wang. "Immunomodulation of Polyunsaturated Fatty Acids Purified from Nitzschia Laevis." In 2009 2nd International Conference on Biomedical Engineering and Informatics. IEEE, 2009. http://dx.doi.org/10.1109/bmei.2009.5305609.

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Schuwerk, L., U. Teichmann, W. Baumgärtner, and P. Wohlsein. "Altersassoziierte Veränderungen und Neoplasien beim Afrikanischen Krallenfrosch (Xenopus laevis)." In 67. Jahrestagung der Fachgruppe Pathologie der Deutschen Veterinärmedizinischen Gesellschaft. Georg Thieme Verlag KG, 2024. http://dx.doi.org/10.1055/s-0044-1787355.

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Kuklina, T. E., and O. L. Konusova. "ON THE STATE OF ULMUS LAEVIS PALL. IN THE URBAN ENVIRONMENT." In Prirodopol'zovanie i ohrana prirody: Ohrana pamjatnikov prirody, biologicheskogo i landshaftnogo raznoobrazija Tomskogo Priob'ja i drugih regionov Rossii. Izdatel'stvo Tomskogo gosudarstvennogo universiteta, 2020. http://dx.doi.org/10.17223/978-5-94621-954-9-2020-46.

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An assessment of the state of Ulmus laevis plantings in the urban environment was carried out on the example of Tomsk. Biometric characteristics and indicators of the viability of trees in street and boulevard plantings have been established. Information about pests and diseases of elm affecting its vital condition and decorative qualities has been obtained.
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Serlin, Zachary, Jason Rife, and Michael Levin. "A Level Set Approach to Simulating Xenopus laevis Tail Regeneration." In Proceedings of the Artificial Life Conference 2016. Cambridge, MA: MIT Press, 2016. http://dx.doi.org/10.1162/978-0-262-33936-0-ch085.

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Serlin, Zachary, Jason Rife, and Michael Levin. "A Level Set Approach to Simulating Xenopus laevis Tail Regeneration." In Proceedings of the Artificial Life Conference 2016. Cambridge, MA: MIT Press, 2016. http://dx.doi.org/10.7551/978-0-262-33936-0-ch085.

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Fránková-Kozáková, M. "Halophilous diatoms in Czech running waters: Pleurosira laevis and Bacillaria paxillifera." In 1st Central European Diatom Meeting. Botanic Garden and Botanical Museum Berlin-Dahlem, 2007. http://dx.doi.org/10.3372/cediatom.108.

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Ahmed, S., N. Javaid, M. Akbar, A. Iqbal, Z. A. Khan, and U. Qasim. "LAEEBA: Link Aware and Energy Efficient Scheme for Body Area Networks." In 2014 IEEE 28th International Conference on Advanced Information Networking and Applications (AINA). IEEE, 2014. http://dx.doi.org/10.1109/aina.2014.54.

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Reports on the topic "Laelia"

1

Cline, Hollis T. Developing Xenopus Laevis as a Model to Screen Drugs for Fragile X Syndrome. Fort Belvoir, VA: Defense Technical Information Center, June 2014. http://dx.doi.org/10.21236/ada608963.

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Cline, Hollis T. Developing Xenopus Laevis as a Model to Screen Drugs for Fragile X Syndrome. Fort Belvoir, VA: Defense Technical Information Center, October 2013. http://dx.doi.org/10.21236/ada598718.

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Hensey, Carmel E. Cloning and Biochemical Analysis of the Ataxia-Telangiectasia (A-T) Gene in Xenopus Laevis. Fort Belvoir, VA: Defense Technical Information Center, September 1999. http://dx.doi.org/10.21236/ada391306.

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Zhai, Fan, and Douglas H. Brooks. Macroeconomic Effects of Infrastructure Financing: A Tale of Two Countries. Inter-American Development Bank, November 2006. http://dx.doi.org/10.18235/0011301.

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The primary objectives of this presentation are to compare and contrast the experiences of China and India in financing infrastructure investment; quantify the macroeconomic impacts of public infrastructure investment; and focus on the different modes of financing. It was presented at the Third LAEBA Annual Meeting in Seoul, South Korea in November 2006.
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Erber, Fabio S. The Brazilian Industrial Policy. Inter-American Development Bank, November 2005. http://dx.doi.org/10.18235/0006832.

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The following presentation briefly outlines a history of Brazilian industrial policy from 1950-present and current structural issues and challenges in modern-day industrial policy. It was presented at the Latin America/Caribbean and Asia/Pacific Economics and Business Association (LAEBA)'s 2nd Annual Meeting held in Buenos Aires, Argentina on November 28th, 2005.
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Menon, Jayant. Does Road Improvement Reduce Poverty?: A General Equilibrium Analysis for Lao PRD. Inter-American Development Bank, November 2006. http://dx.doi.org/10.18235/0006854.

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This presentation discusses the correllation between road improvement and poverty in Lao PDR. Included is a discussion on road improvement and transport costs, the model and simulations, results and conlusions. This presentation was presented at the Thrid Annual Latin America/Caribbean and Asia/Pacific Economics and Business Association (LAEBA) Meeting held in Seoul, South Korea on November 16th, 2006.
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Machinea, José Luis. Trade and Productive Policies: A Latin American and Caribbean Perpective. Inter-American Development Bank, November 2005. http://dx.doi.org/10.18235/0006847.

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This presentation discusses trade and production in Latin America and the Caribbean. Included is a discussion of export dynamics and patterns of integration as well as productive development policies. This presentation was presented at the 2nd Annual Meeting of the Latin America/Caribbean and Asia/Pacific Economics and Business Association (LAEBA) held in Buenos Aires, Argentina on November 28th-29th, 2005.
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Navajas, Fernando. Infrastructure Integration and Incomplete Contracts: Natural Gas in the Southern Cone. Inter-American Development Bank, November 2006. http://dx.doi.org/10.18235/0006856.

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This presentation discusses the experience of natural gas infrastructure integration in the Southern Cone of Latin America. Topics include public goods and contracting, natural gas crisis in the region, competing views of broken exchanges, contractual conflicts, and issues and lessons for regional cooperation. This presentation was created for the LAEBA 2006 Third Annual Meeting held in Seoul, Korea, on November 16-17, 2006.
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Thee, Kian Wie. Technology and Indonesia's Industrial Competitiveness. Inter-American Development Bank, November 2005. http://dx.doi.org/10.18235/0011307.

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This presentation gives an overview of industrial policy in Indonesia during the past few decades. It also discusses industrial policy, reliance on FDI, and improvement in the ITC sector. This presentation was presented at the Latin America/Caribbean and Asia/Pacific Economics and Business Association (LAEBA)'s 2nd Annual Meeting held in Buenos Aires, Argentina on November 28th-29th, 2005.
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Mesquita Moreira, Mauricio. Technology and Indonesia's Industrial Competitiveness: Comments. Inter-American Development Bank, November 2005. http://dx.doi.org/10.18235/0006837.

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This presentation comments on Thee Kian Wie "Technology and Indonesia's Industrial Competitiveness." It includes an overview of the paper and an analysis of policy recommendations, putting forward a series of concerns. Then, the author makes remarks on Fabio's Brazilian Industrial Policy. This presentation was part of the 2005 LAEBA Annual Conference, held in Buenos Aires, Argentina on November, 28-29, 2005.
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