Littérature scientifique sur le sujet « Biscogniauxia »
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Articles de revues sur le sujet "Biscogniauxia"
Fukasawa, Yu. « Invertebrate Assemblages on Biscogniauxia Sporocarps on Oak Dead Wood : An Observation Aided by Squirrels ». Forests 12, no 8 (22 août 2021) : 1124. http://dx.doi.org/10.3390/f12081124.
Texte intégralRaimondo, Maria Luisa, Francesco Lops et Antonia Carlucci. « Charcoal Canker of Pear, Plum, and Quince Trees Caused by Biscogniauxia rosacearum sp. nov. in Southern Italy ». Plant Disease 100, no 9 (septembre 2016) : 1813–22. http://dx.doi.org/10.1094/pdis-09-15-1037-re.
Texte intégralVujanovic, Vladimir, Seon Hwa Kim, Jelena Latinovic et Nedeljko Latinovic. « Natural Fungicolous Regulators of Biscogniauxia destructiva sp. nov. That Causes Beech Bark Tarcrust in Southern European (Fagus sylvatica) Forests ». Microorganisms 8, no 12 (15 décembre 2020) : 1999. http://dx.doi.org/10.3390/microorganisms8121999.
Texte intégralWhalley, A. J. S., T. Laessøe et G. A. Kile. « Validation of Biscogniauxia Sect. Appendiculata ». Mycological Research 94, no 6 (septembre 1990) : 864. http://dx.doi.org/10.1016/s0953-7562(09)81395-6.
Texte intégralNUGENT, L. K., P. SIHANONTH, S. THIENHIRUN et A. J. S. WHALLEY. « Biscogniauxia : a genus of latent invaders ». Mycologist 19, no 1 (février 2005) : 40–43. http://dx.doi.org/10.1017/s0269915x05001060.
Texte intégralPatejuk, Katarzyna, Anna Baturo-Cieśniewska, Wojciech Pusz et Agata Kaczmarek-Pieńczewska. « Biscogniauxia Charcoal Canker—A New Potential Threat for Mid-European Forests as an Effect of Climate Change ». Forests 13, no 1 (8 janvier 2022) : 89. http://dx.doi.org/10.3390/f13010089.
Texte intégralWu, Ming-Der, Ming-Jen Cheng, Rong-Jyh Lin, Hing-Yuen Chan, Sung-Yuan Hsieh, Hsun-Shuo Chang, Chien-Liang Lin et Jih-Jung Chen. « Chemcial Constituents of the Fungus Biscogniauxia cylindrospora ». Chemistry of Natural Compounds 55, no 5 (septembre 2019) : 924–26. http://dx.doi.org/10.1007/s10600-019-02848-8.
Texte intégralCallan, Brenda E., et Jack D. Rogers. « Cultural characters and anamorphs of Biscogniauxia (= Nummularia) marginata, B. dennisii, and B. repanda ». Canadian Journal of Botany 64, no 4 (1 avril 1986) : 842–47. http://dx.doi.org/10.1139/b86-109.
Texte intégralGranata, G., et A. Sidoti. « Biscogniauxia nummularia : pathogenic agent of a beech decline ». Forest Pathology 34, no 6 (décembre 2004) : 363–67. http://dx.doi.org/10.1111/j.1439-0329.2004.00377.x.
Texte intégralVan Der Gucht, K. « Two new Biscogniauxia species from Papua New Guinea ». Mycological Research 100, no 6 (juin 1996) : 702–6. http://dx.doi.org/10.1016/s0953-7562(96)80202-4.
Texte intégralThèses sur le sujet "Biscogniauxia"
Henriques, Joana Margarida Cordeiro. « Charcoal canker (Biscogniauxia mediterranea) in cork oak decline in Portugal ». Doctoral thesis, ISA/UL, 2015. http://hdl.handle.net/10400.5/9256.
Texte intégralCharcoal canker is a disease caused by Biscogniauxia mediterranea that affects Quercus suber and other hardwood species. The fungus develops endophytically in the hosts becoming pathogenic under stress conditions. However, it has become more frequent, particularly in young trees expressing atypical symptoms. This work intends to clarify the agent involved in these disease outbreaks and its variability in different situations, as well as dispersion in natural conditions. The fungal anamorph was identified as Nodulisporium sp. in young hosts. In the stands, ascospores airborne dispersal is predominant, occurring after precipitation periods, and vertical contamination of plants doesn’t happen. A collection of isolates obtained from cork oak in Portugal and other Mediterranean countries, from other hosts and from trees with different ages and disease expression were analyzed by microsatellite-primed PCR, multigene sequencing, morpho-cultural characteristics and growth rates at different temperatures. All the approaches revealed high level of intraspecific polymorphism among isolates, not allowing relating the disease development with any considered feature. The results highlighted the variability and adaptation ability of this fungus in special in the Mediterranea region, in the present worrying scenario of climatic change. All the conditions are gathered to favor the aggravation of the disease in cork oak stands
Serra, Mariana de Jesus. « Caracterização de isolados de Biscogniauxia mediterranea de diversos hospedeiros em Portugal ». Master's thesis, 2021. http://hdl.handle.net/10773/33423.
Texte intégralForests are one of the most important ecosystems on our planet, having high environmental and economic value. Therefore, the preservation of these ecosystems is extremely important. However, the forest is increasingly affected by abiotic problems, such as drought, and biotic problems, such as pathogenic fungi, the main cause of forest diseases. Biscogniauxia mediterranea is a fungus that preferentially attacks plants under water stress and has been causing some concern as it is associated with the decline of cork oak forests. This study characterized a set of isolates with morphological characteristics similar to B. mediterranea, obtained from different forest species distributed throughout mainland Portugal. For a first evaluation of the general genetic diversity, a set of 91 isolates was submitted to MSP-PCR fingerprinting. From the genetic profiles it was possible to select 37 isolates were selected for molecular identification through sequencing and analysis of the ITS region, allowing to confirm most of the isolates as belonging to the genus Biscogniauxia. To determine identity at the species level, a multi-locus analysis was used combining the ITS region whit the transcription elongation factor 1-alpha (tef1-α) and beta-tubulin 2 (tub2) genes. Phylogenetic analyses showed that the isolates studied are related to B. rosacearum. Thus, three isolates (236alpha, 292alpha e 358beta) were selected and characterized in terms of morphology and growth capacity at different incubation temperatures. Pathogenicity tests with two selected isolates were carried out on Eucalyptus globulus, Quercus suber and Pinus pinaster under well-watered and water deficit conditions, and parameters such as water potential, relative necrosis and leaf dry biomass were monitored. The water potential showed a significant decrease for E. globulus and Q. suber plants that were inoculated under the effect of water deficit. However, it was not possible to re-isolate the fungus from the inoculated plants, not allowing to confirm the pathogenicity of B. rosacearum. This study is the first to characterize B. rosacearum isolates from Portugal. For future work, it would be important to analyze the dissemination of this fungus at the national level and perform new pathogenicity tests.
Mestrado em Microbiologia
FEDUCCI, MATTEO. « Relazioni fra parametri climatico-ambientali e stato fitosanitario di cerro e pino nero in Toscana organizzate in un SIT (Sistema Informativo Territoriali) ». Doctoral thesis, 2010. http://hdl.handle.net/2158/534471.
Texte intégralCunha, João Miguel Barge. « Study of the fungal endophytic community in Quercus suber L. populations ». Master's thesis, 2016. http://hdl.handle.net/1822/45583.
Texte intégralCork oak (Quercus suber) is a species of high importance in the Mediterranean. Besides its ecological importance, the cork oak also has a high relevance for the Portuguese economy. This importance is due to the production and processing of cork. However, the sustainability of the cork oak is being threatened due to climate change, which will reduce the availability of water in the Mediterranean, and the occurrence of diseases that increasingly affect their normal development. The charcoal disease, caused by the fungus Biscogniauxia mediterranea, leads to decline, and eventually, death of the tree. Diplodia corticola is another pathogen of the cork oak and is involved in various diseases considered responsible for the decline of the cork oak in the Mediterranean Basin. Currently, the use of fungicides is the main technique used to combat these problems. However the environmental hazard and toxicity of this process leads to the necessity of finding a more effective method. Biological control is an appropriate strategy as an alternative to this problem. Endophytes have the potential to be used as biological agents to control diseases. In addition to being described as potentiators of plant responses to stressful situations, endophytes have the potential for use as biological control agents. To identify endophytic fungi in cork oak, four sites of continental Portugal (Bragança, Gerês, Alcobaça and Grândola), which had differences in water availability, were selected to carry out the collection of biological material. Subsequently, the community of fungal endophytes of three organs (leaves, stems, roots) was evaluated. The trees analysed were largely colonized by fungi of the phylum Ascomycota. In general, Grândola had the highest colonization frequency and diversity of endophytes, while Alcobaça had the lowest. Of all study sites, the cork oaks from Gerês showed a more distinct community, differentiating from all other locations. The roots have a more diverse fungal community than the leaves and stems. It was found that the pathogenic fungi tested (B. mediterranea and D. corticola), essentially affect the aboveground organs of the tree, however no disease symptoms were detected. Furthermore, Gerês was the only study site that did not show any signs of infection by these pathogenic fungi. D. corticola only infected the southern regions (Alcobaça and Grândola), where as B. mediterranea also infected the trees in Bragança. Taking this into account, many fungi were selected for antagonism assays of biological control. Three species (belonging to two genera) may potentially act as biocontrol agents against diseases in Q. suber.
O sobreiro (Quercus suber) é uma espécie de elevada importância na região do Mediterrâneo. Para além da sua importância ecológica, o sobreiro também apresenta uma elevada relevância para a economia Portuguesa. Esta relevância provém da indústria de produção e transformação da cortiça. No entanto, a sustentabilidade do sobreiro poderá estar ameaçada devido às previstas alterações climáticas, que diminuirão a disponibilidade de água na região do Mediterrâneo, e à ocorrência de doenças que afetam cada vez mais o seu normal desenvolvimento. A doença do carvão do entrecasco, causada pelo fungo Biscogniauxia mediterranea, origina um acentuado declínio na árvore, podendo levar à sua morte. Diplodia corticola é um outro fungo patogénico do sobreiro, que está envolvido em várias doenças consideradas responsáveis pelo declínio do sobreiro na Bacia do Mediterrâneo. Atualmente, a utilização de fungicidas é a técnica mais usada para o combate destes problemas. Contudo, o risco ambiental e a toxicidade deste processo levam à necessidade da utilização de outros métodos eficazes. A luta biológica é uma estratégia adequada como alternativa a este problema. Além de se encontrarem descritos como potenciadores das respostas das plantas a situações de stresse, os organismos endófitos têm potencial para serem utilizados como agentes na luta biológica. Para identificar fungos endófitos em sobreiro, quatro locais de Portugal continental (Bragança, Gerês, Alcobaça e Grândola), que apresentavam diferenças na disponibilidade de água, foram selecionados para realizar a recolha de material biológico. A comunidade de fungos endófiticos foi avaliada em três órgãos (folhas, caules, raiz). Os sobreiros testados encontram-se maioritariamente colonizados por fungos do filo Ascomycota. Os sobreiros de Grândola apresentaram uma maior frequência de colonização e diversidade de endófitos, enquanto que os de Alcobaça apresentaram a menor. De todos os locais, os sobreiros do Gerês foram os que apresentaram uma comunidade mais distinta, diferenciando-se de todos os outros locais. As raízes apresentaram uma comunidade de fungos mais diversa do que as folhas e caules. Verificou-se ainda que os fungos patogénicos testados (B. mediterranea e D. corticola), infetaram essencialmente a parte aérea da árvore, apesar de não terem sido verificados sintomas nas mesmas. O Gerês foi o único local de estudo que não apresentou nenhum sinal de infeção por parte destes fungos. O fungo D. corticola infetou exclusivamente as regiões mais a sul (Alcobaça e Grândola), enquanto o fungo B. mediterranea foi também encontrado na região de Bragança. Tendo isto em consideração, diversos fungos foram selecionados para estudos de antagonismo e luta biológica, tendo sido encontradas três espécies (pertencentes a dois géneros) que poderão potencialmente atuar como agentes de biocontrolo contra as doenças de Q. suber.
Livres sur le sujet "Biscogniauxia"
Callan, Brenda Elizabeth. Studies of the anamorphs of selected species of Xylaria, Biscogniauxia, and Rosellinia. 1985.
Trouver le texte intégralActes de conférences sur le sujet "Biscogniauxia"
Churat, A., W. Mongkolthanaruk, N. Suwannasai, N. Wangsawat et S. McCloskey. « Chemical compositions from Biscogniauxia sp. PK15-040 fungus ». Dans 67th International Congress and Annual Meeting of the Society for Medicinal Plant and Natural Product Research (GA) in cooperation with the French Society of Pharmacognosy AFERP. © Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-3399865.
Texte intégralGiambra, S., L. Torta, C. Scopel, R. Causin et S. Burruano. « Primi studi su Biscogniauxia mediterranea in Sicilia occidentale ». Dans Terzo Congresso Nazionale di Selvicoltura. Accademia Italiana di Scienze Forestali, 2009. http://dx.doi.org/10.4129/cns2008.197.
Texte intégral