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Journal articles on the topic 'Laelia'

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Published: 25 July 2024
Last updated: 29 July 2024

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1

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 (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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2

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 (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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3

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 (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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4

Brito, A. L. Toscano, and Sarah Robbins. "LAELIA BAHIENSIS: Orchidaceae." Curtis's Botanical Magazine 9, no. 3 (1992): 116–20. http://dx.doi.org/10.1111/j.1467-8748.1992.tb00080.x.

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5

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 (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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6

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 (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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7

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 (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. & 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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8

Bassett, Mark J. "Pleiotropic Effects of gri on Seed Coat and Flower Color in Common Bean." HortScience 27, no. 3 (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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9

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 (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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10

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 (2016): 1249–62. http://dx.doi.org/10.12705/656.3.

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11

van den Berg, Cássio. "Nomenclatural notes on Laeliinae-IX. New combinations in Cattleya and Laelia (Orchidaceae, Laeliinae)." Neodiversity 15, no. 1 (2022): 1–2. http://dx.doi.org/10.13102/neod.151.1.

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12

Іванніков, Р. В. "Екологічні та біологічні особливості Laelia sincorana Schltr." Вісник Київського національного університету імені Тараса Шевченка. Біологія, Вип. 31 (2000): 23–24.

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13

Rohland, Robert A. "A Note on Laelia in Martial 10.68." Hermes 147, no. 4 (2019): 508. http://dx.doi.org/10.25162/hermes-2019-0042.

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14

Hernández-Muñoz, S., M. E. Pedraza-Santos, J. L. Morales-García, H. Guillén-Andrade, P. A. López, and M. A. A. Téllez-Velasco. "PHENOTYPIC CHARACTERIZATION OF MEXICAN ORCHID LAELIA AUTUMNALIS." Acta Horticulturae, no. 977 (February 2013): 245–52. http://dx.doi.org/10.17660/actahortic.2013.977.28.

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15

Stancato, Giulio Cesare, Mônica Ferreira Abreu, and Ângela Maria Cangiani Furlani. "Crescimento de orquídeas epífitas in vitro: adição de polpa de frutos." Bragantia 67, no. 1 (2008): 51–57. http://dx.doi.org/10.1590/s0006-87052008000100006.

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Este trabalho foi desenvolvido com o objetivo de estudar o efeito das polpas de frutas no crescimento de plântulas de orquídeas in vitro. Três espécies de orquídeas epífitas brasileiras foram usadas: Laelia longipes Rchb.f., Laelia tenebrosa Rolfe e Miltonia spectabilis (Lindley). Os seguintes meios nutritivos foram testados: 10:10:10 (N:P:K), na concentração de 1 g L-1, 10:30:20, 1 g L-1, polpa de maçã, 10,0 g L-1, polpa de tomate, 10 g L-1, polpa de banana, 50 g L-1, e também os meios de KNUDSON, VACIN e WENT, MURASHIGE e SKOOG. Nas plântulas de L. longipes, cultivadas em 10:10:10 e polpa de banana observou-se o maior acúmulo de, massa e naquelas cultivadas em MS o menor. Pela análise dos resultados para Miltonia spectabilis observou-se que os meios 10:30:20 e polpa de banana proporcionaram o maior acúmulo de massa seca e no meio MS, o menor acúmulo. Em ordem decrescente de acúmulo de matéria seca total estão os meios 10:30:20 e polpa de banana, seguidos por 10:10:10, polpa de tomate, KNUDSON (58,3%), VACIN e WENT (18,7%), polpa de maçã (13,2%) e MS (4,1%). Para Laelia tenebrosa, as plântulas cultivadas no meio polpa de banana incorporaram o maior conteúdo de matéria seca, seguidas pelas plântulas cultivadas em meio com 10:10:10. Os outros meios propiciaram acúmulo reduzido.
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16

Medina-Mendoza, Carmen, José Luis Rodríguez-de-la-O, and Yucundo Mendoza-Tolentino. "Crioconservación de Laelia speciosa en peligro de extinción." Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI 11, Especial (2023): 100–104. http://dx.doi.org/10.29057/icbi.v11iespecial.10183.

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Dentro de la diversidad que México posee, se encuentran las orquídeas, de las cuales el 44 por ciento son endémicas. Los bancos de germoplasma son una alternativa para el rescate y preservación de innumerables recursos. El objetivo del trabajo fue crioconservar a Laelia speciosa empleando las técnicas de encapsulación-deshidratación y vitrificación. La micropropagación fue en medio Murashige y Skoog con extracto de malta (500 mg·L-1). La encapsulación se realizó con protocormos con alginato de sodio, 0.75 M de cloruro de calcio, pre-tratamiento de 0.75 M durante 24 horas y expuestas a gel de sílice por 5 horas, obteniendo de 80 a 100 por ciento de sobrevivencia y regeneración. Para el protocolo de vitrificación los protocormos se pre-cultivaron en 0.3 M de sacarosa durante 3 días, 20 min en tratamiento de carga y deshidratación con PVS2 por 60 min obteniendo 100 por ciento de sobrevivencia y regeneración. Por lo cual, se establecieron los protocolos para conservar a Laelia speciosa a largo plazo.
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Robault, Adélaïde. "C’est pas une maladie !" L'école des parents N° Hors-série, HS5 (2023): 36–38. http://dx.doi.org/10.3917/epar.hs5.0036.

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L’action collective est la meilleure réponse à l’angoisse engendrée chez les enfants par le dérèglement climatique, affirmait en juin Laelia Benoit au congrès de la SFPEADA, à Toulouse. Car ce problème ne relève pas de la pathologie, insiste la pédopsychiatre, qui réclame des mesures politiques.
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18

Bassett, Mark J. "Interaction of Two Genes, Fcr and Fcr2, with the t Allele in Common Bean that Restores Color to Flowers." Journal of the American Society for Horticultural Science 118, no. 6 (1993): 881–84. http://dx.doi.org/10.21273/jashs.118.6.881.

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Plant Introduction (PI) accession 507984 of common bean (Phaseolus vulgaris L.) has partly colored seed coats and either pure white flowers or light laelia flowers. Crosses were made with white-flowered plants of PI 507984: white-flowered plant #1 × the genetic stock t ers ers2 BC2 5-593 and white-flowered plant #2 × recurrent parent dry bean breeding line 5-593. Inheritance was studied in the F1, F2, and F3 of the former cross and the F1 and F2 of the latter cross. PI 507984 (white flower, plant #1) × t ers ers2 BC2 5-593 gave F1 plants with colored flowers and partly colored seeds. The F2 gave a 9:7 segregation ratio (colored flowers to white flowers), and the genetic model proposed is that flower color is restored in the presence of t/t by two complementary genes, Fcr and Fcr-2. That model was confirmed by F3 progeny tests of 21 F2 parents with colored flowers. The cross PI 507984 (white flower, plant #2) × 5-593 gave an F2 segregation ratio of 9:3:4 (bishops-violet: light laelia: white flowers), indicating that the white-flowered PI 507984 has vlae masked by t. Analysis of all the data suggests that PI 507984 is heterogeneous at Fcr and Fcr-2, having all three possible homozygous genotypes, viz., either light laelia flowers from vlae t Fcr Fcr-2 or white flowers from vlae t Fcr fcr-2 or vlae t fcr Fcr-2. The flower color restoration gene in 5-593 is arbitrarily assigned the symbol Fcr. Great variability occurs in partly colored seeds of PI 507984 due to the environment in which the seed was produced.
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19

Іванніков, Р. В. "Морфоструктура пагонової системи Laelia sincorana Schltr. (Orchidaceae Juss.)". Вісник Київського університету імені Тараса Шевченка. Біологія, Вип. 29 (1999): 47–48.

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20

López-Escamilla, Ana Laura, Viridiana Badillo-Huerta, Patricia Rodríguez-Cuamatzi, Jorge García-Dávila, and Lilia Sánchez-Minutti. "Bioactive compounds in Laelia speciosa (Orchidaceae) seedlings grown in temporary immersion bioreactor." Mexican journal of biotechnology 9, no. 1 (2024): 19–32. http://dx.doi.org/10.29267/mxjb.2024.9.1.19.

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Laelia speciosa is an epiphytic orchid endemic to Mexico, enjoying special protected status due to illegal sales and clandestine field extraction. Until now, in vitro cultivation of this plant has not been explored using temporary immersion bioreactor (TIB). L. speciosa seedlings were grown in a TIB, and the presence of bioactive compounds released into the liquid culture medium was determined. Bioactive compounds such as antioxidants, total polyphenols, and flavonoids were identified. The maximum concentration of total polyphenols was 2.29 ± 0.10 mg GAE/g, and the antioxidant capacity reached 33.7 %. Colorimetric tests revealed the presence of flavanones and flavonols. Gas chromatography-mass spectrometry identified components of the culture medium as 1,3-dihydroxyacetone dimer and 5-(hydroxymethyl)-2-furancarbaldehyde. Fourier transform infrared spectroscopy confirmed the presence of polyphenols in the culture medium. This work provides an alternative method for obtaining bioactive compounds while conserving L. speciosa seedlings.
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21

Zappi, D. C. "Nomenclatural Notes on Some Cattleya and Laelia Species (Orchidaceae)." Kew Bulletin 50, no. 2 (1995): 423. http://dx.doi.org/10.2307/4110651.

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22

Ramírez-Mosqueda, M. A., C. A. Cruz-Cruz, J. Atlahua-Temoxtle, and J. J. Bello-Bello. "In vitro conservation and regeneration of Laelia anceps Lindl." South African Journal of Botany 121 (March 2019): 219–23. http://dx.doi.org/10.1016/j.sajb.2018.11.010.

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23

Ávila-Díaz, Irene, Ken Oyama, Carlos Gómez-Alonso, and Rafael Salgado-Garciglia. "In vitro propagation of the endangered orchid Laelia speciosa." Plant Cell, Tissue and Organ Culture (PCTOC) 99, no. 3 (2009): 335–43. http://dx.doi.org/10.1007/s11240-009-9609-8.

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24

Rideau, John. "Laelia Benoit, Infantisme , Paris, Le Seuil, coll. « Libelle », 2023." Cahiers de l'enfance et de l'adolescence 11, no. 1 (2024): 229–30. http://dx.doi.org/10.3917/cead.011.0229.

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25

Lee-Espinosa, H. E., J. Murguía-González, A. Laguna-Cerda, et al. "SOMATIC EMBRYOIDS ENCAPSULATION OF Laelia anceps ssp. dawsonii TO PRODUCE SYNTHETIC SEED." Revista Chapingo Serie Horticultura XV, no. 4 (2009): 33–40. http://dx.doi.org/10.5154/r.rchsh.2009.15.047.

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26

Jiménez-Peña, Nadia, Manuel Sandoval-Villa, Victor Hugo Volke-Haller, Martha Elena Pedraza-Santos, and Ernesto Fernadez-Herrera. "Colonización micorrízica de Laelia autumnalis (La Llave & Lex.) Lindl." Ecosistemas y Recursos Agropecuarios 5, no. 15 (2018): 547. http://dx.doi.org/10.19136/era.a5n15.1756.

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27

Pasqual, Moacir, Joyce DR Soares, Filipe A. Rodrigues, Aparecida G. de Araujo, and Roseneide R. dos Santos. "Influência da qualidade de luz e silício no crescimento in vitro de orquídeas nativas e híbridas." Horticultura Brasileira 29, no. 3 (2011): 324–29. http://dx.doi.org/10.1590/s0102-05362011000300011.

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Objetivou-se avaliar a influência do ambiente de cultivo e de concentrações de silicato de cálcio no crescimento in vitro de uma espécie nativa de orquídea (Brassavola perrine) e de um híbrido [(Laelia cattleya Culminant "Tuilerie" x Laelia cattleya Sons Atout Rotunda) x Brassolaelia cattleya Startifire Moon Beach]. Plântulas oriundas de sementes germinadas in vitro com aproximadamente 0,5 cm de comprimento foram inoculadas em frascos com capacidade para 250 mL contendo 60 mL de meio de cultura MS, acrescido de silicato de cálcio (0; 0,5; 1,0 e 2,0 mg L-1) em ambientes de cultivo [natural (casa de vegetação) e artificial (em sala de crescimento)], em todas as combinações possíveis. O meio de cultura teve seu pH ajustado para 5,8±0,1 e geleificado com 5,5 g L-1 de ágar antes do processo de autoclavagem a 121ºC e 1 atm por 20 minutos. Ao final de 150 dias foram realizadas avaliações biométricas e análises micromorfológicas (miscroscopia de varredura) nas plântulas. Maior crescimento foi obtido com a utilização de 2,0 mg L-1 e 1,0 mg L-1 de silicato de cálcio para o híbrido e espécie nativa, respectivamente, em sala de crescimento. As orquídeas em estudo são espécies anfiestomáticas, com estômatos do tipo tetracítico (híbrida) e anomocítico (nativa). A presença do silício na estrutura foliar proporcionou o correto desenvolvimento (ausência de deformações estruturais) de plântulas de orquídeas.
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28

Jones, Hope, and Chieri Kubota. "(302) Photoautotrophic Micropropagation Systems Demonstrate Rooting Stage Improvement of Laelia purpurata var. alba." HortScience 40, no. 4 (2005): 1010D—1010. http://dx.doi.org/10.21273/hortsci.40.4.1010d.

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In vitro culture of orchid plantlets within conventional photomixotrophic micropropagation (PMM) systems (sucrose containing media in a non-enriched CO2 environment) often induces vigorous growth and multiplication. However, transition to ex vitro conditions frequently results in significant plantlet loss during the acclimatization process. Recent studies investigating micropropagation within photoautotrophic (PAM) systems (sucrose-free media in enriched CO2 conditions) have demonstrated improved plantlet survival during the acclimatization period due to greater root growth and stomata adaptation. Laelia purpurata var. alba, an orchid with many endangered relatives, was chosen as a model orchid species to investigate if plantlet culture within PAM in vitro systems has the potential to improve propagation success and ex vitro survival of endangered Laelia species. Protocorm-like bodies with developed two fully extended leaves were transferred into PMM (photosynthetic photon flux 50 μmol·m-2·s-1 under non-enriched CO2 conditions) and PAM (photosynthetic photon flux 150 μmol·m-2·s-1, CO2 level enriched to 1500 μmol·mol-1) systems. After 6 weeks, plantlet rooting within the PMM system was variable and inconsistent, while all PAM plantlets produced healthy robust root systems. Average fresh weights and percent shoot development were not significantly different between treatments. Induction of improved root growth by PAM systems may improve orchid plantlet survival rates during acclimatization and advance our ability to increase endangered orchid populations.
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Soto-Valladares, A. G., R. De La Torre-Almaraz, B. Xoconostle-Cazares, and R. Ruíz-Medrano. "First Report of Cymbidium mosaic virus and Odontoglossum ringspot virus in Orchids in Mexico." Plant Disease 96, no. 3 (2012): 464. http://dx.doi.org/10.1094/pdis-08-11-0655.

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In 2010, a survey for viral diseases in commercial, orchid-producing greenhouses was carried out in Morelos, Mexico. Many symptomatic plants were observed. The most common leaf symptoms were yellow mottle, yellow streaks, and chlorotic and necrotic ringspots. Leaf samples were collected from eight symptomatic plants from the following genera: Encyclia, Oncidium, Shomburghia, Brassia, Guarianthe, Cattleya, Epidendrum, Vanilla, Xilobium, Laelia, and Brassocattleya. Samples were tested using double-antibody sandwich (DAS)-ELISA (Agdia, Elkhart, IN) with antiserum for Cymbidium mosaic virus (CymMV), Odontoglossum ringspot virus (ORSV), Cymbidium ringspot mosaic virus, and Tobacco mosaic virus (TMV) and a general antiserum for potyviruses. At least one plant from each genus was positive to CymMV and ORSV as individual or mixed infections. Encyclia and Laelia plants were the most frequently found with mixed infections by both viruses. All genera were negative for TMV and potyviruses. Total RNA extracts were obtained from all ELISA-positive samples by a modified silica capture protocol (2). Reverse transcription (RT)-PCR was carried out with general polymerase (RdRp) gene primers corresponding to the Potexvirus group (3) and specific primers for the coat protein gene (CP) of CymMV and ORSV (1). The PCR amplification from a positive sample of each genus was resolved in agarose gels. Amplification products of the expected size were obtained for CymMV and ORSV. Five CymMV RdRp gene clones from five different plants of Laelia (GenBank Accession Nos. HQ393958, HQ393959, HQ393960, HQ393961, and HQ393962), two CP gene clones of CP gene of CymMV from two different plants of Oncidium (GenBank Accession Nos. HQ393956 and HQ393957), and three CP clones of CP of ORSV from three different plants of Encyclia (GenBank Accession Nos. HQ393953, HQ393954, and HQ393955) were sequenced. The nucleotide sequences of the Mexican orchid CymMV isolates were 96 to 97% identical to CymMV sequences in the GenBank, while those of ORSV were 99 to 100% identical to deposited ORSV sequences. To our knowledge, this is the first report of CymMV and ORSV in orchids in Mexico, which are two of the most important quarantine virus in orchids in Mexico. References: (1) P. Ajjikuttira et al. J. Gen. Virol. 86:1543, 2005. (2) J. R. Thompson et al. J. Virol. Methods 111:85, 2003. (3) R. A. A. van der Vlugt and M. Berendsen. Eur. J. Plant Pathol. 108:367, 2002.
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Lee-Espinosa, Hilda E., Antonio Laguna-Cerda, Joaquín Murguía-González, et al. "UN PROTOCOLO DE EMBRIOGÉNESIS SOMÁTICA PARA LA REGENERACIÓN Y CARACTERIZACIÓN IN VITRO DE Laelia anceps ssp. dawsonii." Revista Fitotecnia Mexicana 33, no. 4 (2010): 323. http://dx.doi.org/10.35196/rfm.2010.4.323.

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Laelia anceps subespecie dawsonii, es una de las orquídeas silvestres mexicanas más apreciadas, con potencial ornamental por sus atractivas características que le permiten cumplir estándares internacionales de calidad y la convierten en una especie económicamente importante. Ello ha provocado su colecta excesiva y el consecuente riesgo de extinción. Para asegurar su conservación, es necesario desarrollar protocolos eficientes de propagación para esta especie, que permitan su uso sustentable y reduzcan la colecta. La embriogénesis somática constituye una tecnología eficiente para la multiplicación in vitro de especies vegetales. En este estudio, se evaluaron las condiciones in vitro para desarrollar un protocolo de embriogénesis somática para Laelia anceps ssp. dawsonii. A partir de semillas se indujo callo embriogénico en el medio Murashige y Skoog suplementado con ácido naftalénacético (ANA), 6-bencilami-nopurina (BAP), cinetina (Kin) y ácido indol acético (AIA), en combinaciones múltiples. La combinación ANA+BAP+AIA (2 mg L-1 de cada una) resultó óptima para inducción de callo pues produjo 611 embriones somáticos en fotoperiodo de 16 h (33.8 μmol m-2 s-1), con tres subcultivos a intervalos de 45 d en el mismo medio de cultivo, en el que además los embriones desarrollaron plántulas completas. En aproximadamente tres meses, las plántulas alcanzaron 4 a 5 cm en el medio Vacin y Went suplementado con BAP (2 mg L-1), AIA (1 mg L-1) y carbón activado (0.2 %), y después de 30 d, se aclimataron en invernadero, con 95 % de sobrevivencia.
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Ávila-Díaz, Irene, and Ken Oyama. "Conservation genetics of an endemic and endangered epiphytic Laelia speciosa (Orchidaceae)." American Journal of Botany 94, no. 2 (2007): 184–93. http://dx.doi.org/10.3732/ajb.94.2.184.

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Nicolini, Sara, and Antonio Pistellato. "Il privilegio di Laelia : Locus sepulturae in praefectura (CIL, V, 2174)." Cahiers du Centre Gustave Glotz 17, no. 1 (2006): 187–200. http://dx.doi.org/10.3406/ccgg.2006.908.

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Ortega-Loeza, Martha Mireya, Rafael Salgado-Garciglia, Carlos Gómez-Alonso, and Irene Ávila-Díaz. "Acclimatization of the endangered Mexican epiphytic orchid, Laelia speciosa (H.B.K.) Schltr." EUROPEAN JOURNAL OF ENVIRONMENTAL SCIENCES 1, no. 2 (2012): 48–54. http://dx.doi.org/10.14712/23361964.2015.46.

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Gudiño, Whaleeha, Irene Ávila-Díaz, Ken Oyama, and Erick Barrera de la. "High-Temperature Tolerance by the Endangered Mexican Mayflower Orchid, Laelia Speciosa." Tropical Conservation Science 8, no. 4 (2015): 983–91. http://dx.doi.org/10.1177/194008291500800408.

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Tejeda-Sartorius, Olga, Libia Iris Trejo-Téllez, Mayra Arguello-Quechuleño, and María De los Ángeles Aída Téllez-Vel. "Fuentes fertilizantes orgánicas y minerales en Laelia anceps Lindl. subesp. anceps (Orchidaceae) en fase vegetativa." Revista Mexicana de Ciencias Agrícolas, no. 5 (June 7, 2018): 951–65. http://dx.doi.org/10.29312/remexca.v0i5.1301.

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 Se evaluó el efecto de fuentes fertilizantes orgánicas y minerales, aplicadas por separado y combinadas, en el crecimiento de plantas de Laelia anceps Lindl. subesp. anceps (Orchidaceae) en fase vegetativa (FV), clasificadas en grupos 1 y 2 (de 8 y 12 meses de edad, respectivamente), para evaluar su crecimiento al pasar de FV1 a FV2, y determinar si es posible disminuir el tiempo entre ambas fases. El experimento se realizó en invernadero; se usó como sustrato una mezcla 75% corteza de pino y 25% perlita. Para el grupo 1, la fertilización orgánica incrementó la longitud de hojas, número de raíces, y peso fresco de raíz y el total. Para el grupo 2, las fertilizaciones orgánica y mineral, por separado, incrementaron el número y longitud de hojas; la fertilización orgánica aumentó el área foliar, el peso fresco de pseudobulbo y el total. En el grupo 2, la fertilización orgánica y mineral, por separado, aumentó el peso seco de las variables analizadas en relación con TEA, principalmente. El grupo 1 presentó porcentajes de crecimiento mayores en las diferentes variables, en comparación con el grupo 2, pero el peso seco en el grupo 2 fue entre 5 y 7% mayor, en relación con el peso seco del grupo 1. Con base en los resultados encontrados, se concluye que la fertilización orgánica y mineral aplicadas por separado, promueven efectos positivos en diferentes variables de crecimiento analizadas en Laelia anceps subesp. anceps, y que esta especie requiere ocho meses para pasar de FV1 a FV2.
 
 
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Barros, Fábio de. "Diversidade taxonômica e distribuição geográfica das Orchidaceae brasileiras." Acta Botanica Brasilica 4, no. 1 (1990): 177–87. http://dx.doi.org/10.1590/s0102-33061990000100013.

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Orchidaceae é uma das maiores famílias do Reino Vegetal, e sua distribuição geográfica obedece a limites definidos já a nivel de sub-famílias. O genero Laelia, com 7 seções das quais 5 ocorrentes no Brasil, apresenta características evolutivas interessantes, principalmente a sect. Parviflorae, que ocorre predominantemente em Minas Gerais e que representa um exemplo de "evolução explosiva" ainda em andamento. Os tratamentos taxonómicos dados a cada diferente grupo dentro da família não se apresentam uniformes, o que leva à aceitação de um grande número de gêneros pequenos em alguns grupos e de poucos gêneros grandes e complexos, em outros grupos.
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37

Delmanto, Ivan. "Aelia Laelia: alegoria e sonhos coletivos na formação negativa da dramaturgia brasileira." Cadernos Benjaminianos 14, no. 1 (2019): 121. http://dx.doi.org/10.17851/2179-8478.14.1.121-142.

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Resumo: A partir dos conceitos de alegoria, messianismo e de imagem onírica, retirados da obra de Walter Benjamin, o artigo apresenta, de forma inacabada e incompleta, aspectos do processo histórico de formação da dramaturgia brasileira. Procura-se traçar o percurso de formação de uma dramaturgia nacional identificando os limites e avanços do processo de aclimatação das formas e gêneros de origem europeia, escolhendo como objetos algumas obras e autores em que se pode observar a presença de uma dialética entre negatividade e utopia que, não obstante sua diversidade, poderia caracterizar esse trajeto de formação como capaz de gerar obras tão dilaceradas quanto o tecido social que lhes corresponde.Palavras-chave: teatro; dramaturgia brasileira; alegoria, imagem onírica.Abstract: From the concepts of allegory, messianism and dream picture, taken from the work of Walter Benjamin, the article presents, in an incomplete and incomplete way, aspects of the historical process of Brazilian dramaturgy. It is sought to trace the course of formation of a national dramaturgy by identifying the limits and advances of the process of acclimatization of forms and genres of European origin, choosing as objects some works and authors in which one can observe the presence of a dialectic between negativity and utopia and how it, not withstanding its own diversity, could characterize this formation course capable of generating new works as lacerated as the social fabric to which they correspond.Keywords: theater; Brazilian dramaturgy; allegory; dream image
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van den Berg, C., and M. W. Chase. "Nomenclatural Notes on Laeliinae (Orchidaceae): IV. New Combinations in Laelia and Sophronitis." Kew Bulletin 59, no. 4 (2004): 565. http://dx.doi.org/10.2307/4110912.

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TRAPNELL, D. W., and J. L. HAMRICK. "Mating patterns and gene flow in the neotropical epiphytic orchid, Laelia rubescens." Molecular Ecology 14, no. 1 (2004): 75–84. http://dx.doi.org/10.1111/j.1365-294x.2004.02383.x.

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Almanza-Álvarez, Jazmín, Roberto Garibay-Orijel, Rafael Salgado-Garciglia, et al. "Identification and control of pathogenic fungi in neotropical valued orchids (Laelia spp.)." Tropical Plant Pathology 42, no. 5 (2017): 339–51. http://dx.doi.org/10.1007/s40858-017-0171-3.

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41

Shaw, Julian M. H. "(2457) Proposal to conserve the nothogeneric name ×Brassolaeliocattleya with that spelling against ×Brasso-catt-laelia and ×Laelia-brasso-cattleya (Orchidaceae)." Taxon 65, no. 4 (2016): 887. http://dx.doi.org/10.12705/654.22.

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Ma, Ding, Ruiting Ju, and Bo Li. "Preference of Laelia coenosa for native and introduced populations of invasive Spartina alterniflora." Biodiversity Science 23, no. 1 (2015): 101–8. http://dx.doi.org/10.17520/biods.2014156.

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CORTÉS-PALOMEC, AUREA C., ROSS A. MCCAULEY, and KEN OYAMA. "Isolation, characterization and cross-amplification of polymorphic microsatellite loci in Laelia speciosa (Orchidaceae)." Molecular Ecology Resources 8, no. 1 (2008): 135–38. http://dx.doi.org/10.1111/j.1471-8286.2007.01898.x.

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Trapnell, Dorset W., J. L. Hamrick, and John D. Nason. "Three-dimensional fine-scale genetic structure of the neotropical epiphytic orchid, Laelia rubescens." Molecular Ecology 13, no. 5 (2004): 1111–18. http://dx.doi.org/10.1111/j.1365-294x.2004.02148.x.

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45

Vergara-Galicia, Jorge, Rolffy Ortiz-Andrade, Patricia Castillo-España, et al. "Antihypertensive and vasorelaxant activities of Laelia autumnalis are mainly through calcium channel blockade." Vascular Pharmacology 49, no. 1 (2008): 26–31. http://dx.doi.org/10.1016/j.vph.2008.04.002.

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46

Emeterio-Lara, Aucencia, José G. García-Franco, Mariana Hernández-Apolinar, et al. "Endogamy costs and reproductive biology of Laelia autumnalis, an endemic orchid of Mexico." Plant Ecology 219, no. 12 (2018): 1423–34. http://dx.doi.org/10.1007/s11258-018-0891-6.

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47

Ávila-Díaz, Irene, Roberto Garibay-Orijel, and Rosa Elia Magaña-Lemus. "Evidencia molecular revela hongos asociados dentro de la orquídea epifita Laelia speciosa (HBK) Schltr." Botanical Sciences 91, no. 4 (2014): 523. http://dx.doi.org/10.17129/botsci.429.

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Las relaciones de orquídeas-hongos han sido estudiadas principalmente en orquídeas terrestres. El trabajo aquí presentado trata sobre la diversidad y signifi cado biológico de los hongos asociados a la orquídea epifi ta endémica Laelia speciosa. Se registró la presencia fungal en semillas, protocormos y plántulas durante la germinación y primeros estadíos de desarrollo in vitro de L. speciosa mediante evidencia molecular. Las secuencias de ITS confi rmaron la presencia de hongos en raíces, cápsulas, semillas y también en plántulas cultivadas in vitro. Ninguno de los hongos encontrados formó pelotones característicos por lo que no se asume que sean hongos micorrízicos. Se identifi caron 18 taxa de hongos pertenecientes a ocho géneros (Alternaria, Curvularia, Cylindrocarpon, Fusarium, Myrmecridium, Neonectria, Penicillium y Tetracladium) y especies desconocidas de Atractiellales, Helotiales, Hypocreales, Lasiosphaeriaceae, Nectriaceae, Sordariomycetes y Tricholomataceae. De éstos, se infi rió la biología de nueve parásitos, cuatro saprobios y dos endófi tos. Uno de los hongos, perteneciente a una especie de Helotiales coloniza todos los tejidos de la orquídea, incluyendo semillas y plántulas cultivadas in vitro; por tanto, aun si todas las precauciones son tomadas, es difícil obtener “cultivos axénicos”de L. speciosa. Existe una considerable diversidad de hongos endófi tos dentro de los órganos de L. speciosa a través de todo su ciclo de vida.
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48

García-González, Rosalía, José R. Enríquez-del Valle, Gerardo Rodríguez-Ortiz, Gisela V. Campos-Angeles, Eduardo A. Pérez-García, and Judith Ruiz-Luna. "Mineral salts and growth regulators for micropropagation of Laelia halbingeriana Salazar & Soto Arenas." International Journal of Agriculture and Natural Resources 47, no. 2 (2020): 105–16. http://dx.doi.org/10.7764/ijanr.v47i2.2086.

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49

Santos-Hernández, Leticia, Martha Martínez-García, Jorge E. Campos, and Ernesto Aguirre-León. "In vitro Propagation of Laelia albida (Orchidaceae) for Conservation and Ornamental Purposes in Mexico." HortScience 40, no. 2 (2005): 439–42. http://dx.doi.org/10.21273/hortsci.40.2.439.

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The orchid Laelia albida is an important cultural and religious plant resource of the Tehuacan-Cuicatlan Valley Biosphere Reserve in south-central Mexico. It is gradually becoming scarce due to overcollecting and habitat perturbation. For this reason, and for preservation purposes, the aim of the present work was to obtain the conditions to successfully propagate this species, through the use of mature seeds stored at 4 °C, and basal buds following in vitro techniques. Seeds with different storage periods (lot 1 and lot 2) were analyzed for seed viability as determined by the TTC method, germination percentage and germination index were analyzed on a monthly basis for 11 months on two Knudson C (K-4003, K-4128; Sigma). Seedlings were initially grown on the same culture media variants, but 30 days later they needed to be supplemented with potato starch (20 g·L-1). Basal buds were cultured on Knudson C containing nine BAP and NAA combinations two of which were also supplemented with potato starch (20 g·L-1) and coconut water (10%). Seed viability ranged from 78% to 98% throughout the 11 months and germination percentage was 70% to 90% without significant differences between the two lots. K-4003, either alone or supplemented with potato starch, was the best culture medium used to achieve all the development stages as well as seedlings with rhizoids. Bud proliferation was also successful on K-4003 added with BAP, NAA, potato starch and coconut water. The BAP (7.4 μm) and NAA (5.3 μm) combination promoted shoots and protocorm-like bodies (PLB). The results obtained with basal buds, make its preservation through in vitro culture possible and give the possibility to obtain available plantlets for its cultivation in regional nurseries. Storage conditions tested here may be useful for seed bank management for this species. Chemical names used: 6-benzylaminopurine (BAP), 1-naphthaleneacetic acid (NAA).
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Heredia-Rendón, A., J. Enríquez-del Valle, G. V. Campos, F. Marini, V. A. Velasco, and A. Damon. "EX VITRO ACCLIMATIZATION OF LAELIA HALBINGERIANA PLANTS GROWN IN DIFFERENT MEDIA AND FERTILIZATION DOSES." Acta Horticulturae, no. 843 (October 2009): 191–96. http://dx.doi.org/10.17660/actahortic.2009.843.24.

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