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231223s2009 xx |||||o 00| ||eng c |
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|a 10.1111/j.1469-8137.2008.02746.x
|2 doi
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|a pubmed25n0620.xml
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|a DE-627
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|a eng
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| 100 |
1 |
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|a Saunders, Megan
|e verfasserin
|4 aut
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|a Evidence for alteration of fungal endophyte community assembly by host defense compounds
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|c 2009
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 29.04.2009
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|a Date Revised 16.04.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a * Plant defense compounds are common stressors encountered by endophytes. Fungi readily evolve tolerance to these compounds, yet few studies have addressed the influence of intraspecific variation in defense compound production on endophyte colonization. We compared the influence of defense compound production on the composition of fungal endophyte communities in replicated field experiments. * Maize (Zea mays) produces benzoxazinoids (BXs), compounds with antifungal byproducts persistent in the environment. Fungi were isolated from leaf and root tissue of two maize genotypes that produce BXs, and a natural mutant that does not. Isolates representing the species recovered were tested for tolerance to 2-benzoxazolinone (BOA), a toxic BX byproduct. * In seedling roots and mature leaves, the community proportion with low BOA tolerance was significantly greater in BX nonproducers than producers. Mean isolation frequency of Fusarium species was up to 35 times higher in mature leaves of BX producers than nonproducers. * Fungal species with relatively high tolerance to BOA are more abundant in BX producing than BX nonproducing maize. Production of BXs may increase colonization by Fusarium species in maize, including agents of animal toxicosis and yield-reducing disease in maize. Overall, results indicate that production of defense compounds can significantly alter endophyte community assembly
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Benzoxazines
|2 NLM
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|a Benzoxazoles
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|a benzoxazolone
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|a Kohn, Linda Myra
|e verfasserin
|4 aut
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|i Enthalten in
|t The New phytologist
|d 1990
|g 182(2009), 1 vom: 15., Seite 229-238
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|x 1469-8137
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|g volume:182
|g year:2009
|g number:1
|g day:15
|g pages:229-238
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|u http://dx.doi.org/10.1111/j.1469-8137.2008.02746.x
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