http://precedings.nature.com/tags/fungal%20pathogen Recently posted documents tagged with 'fungal pathogen' Nature Publishing Group en Nature Precedings http://precedings.nature.com/images/header_logo.gif http://precedings.nature.com http://precedings.nature.com/documents/1908/version/1 Endophytic fungi that asymptomatically colonize plants1 are diverse and abundant in tropical ecosystems2. These organisms can be weakly pathogenic3 and/or mutualistic, frequently enabling plants to adapt to extreme environments, alter competitive abilities of host individuals and improve host fitness under abiotic or biotic stresses4,5,6. Diplodia mutila is a symbiotic endophyte/plant pathogenic fungus infecting the palm Iriartea deltoidea7, which dominates many wet lowland Neotropical forests. The fungus is an asymptomatic endophyte in mature plants, and disease and mortality are expressed in some seedlings, while others remain disease free. Here we show that seedlings bearing the endophyte show enhanced resistance to insect herbivory. However, high light availability triggers pathogenicity of the fungus, while low light favors endosymbiotic development, constraining recruitment of endophyte-infested seedlings to the shaded understory by limiting survival of seedlings in direct light. These results provide evidence that patterns of plant abundance and the mechanisms maintaining tropical forest biodiversity are the result of a more complex interplay between abiotic and biotic environments than previously thought. http://precedings.nature.com/documents/1908/version/1 Fri, 23 May 2008 12:11:48 UTC Light converts endosymbiotic fungus to pathogen, influencing seedling survival and host tree recruitment hdl:10101/npre.2008.1908.1 2008-05-27 Patricia Alvarez Nature Precedings 2008-05-23T12:11:48Z Manuscript Ecology http://creativecommons.org/licenses/by/3.0/ http://precedings.nature.com/documents/1875/version/1 Mosquito causes problems in both disease transmission and disturbance to people’s daily life. The controlling methods used now are mainly application of chemical pesticides which result in serious harm to environment. Biological control of the pest is one of the ideal ways. But, lack of suitable agent makes it difficult to extend this technique in wider scope. Pythium guiyangense Su is a newly found fungal pathogen of mosquitoes and is promising for practical use. Here we summarize a list of mosquitoes that can be infected by the fungus so far, which shows the potential significance of the application of the fungus in the future. http://precedings.nature.com/documents/1875/version/1 Mon, 12 May 2008 13:44:31 UTC A Report of the Mosquito Host Range of Pythium guiyangense Su hdl:10101/npre.2008.1875.1 2008-05-12 Xiaoqing Su Nature Precedings 2008-05-12T13:44:31Z Manuscript Microbiology Earth & Environment http://creativecommons.org/licenses/by/3.0/