Competition, facilitation, and niche differentiation in two foliar pathogens

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Competition, facilitation, and niche differentiation in two foliar pathogens

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dc.contributor.author Al-Naimi, F.A.
dc.contributor.author Garrett, K.A.
dc.contributor.author Bockus, W.W.
dc.date.accessioned 2009-12-29T08:35:51Z
dc.date.available 2009-12-29T08:35:51Z
dc.date.issued 2004-12-15
dc.identifier.citation Volume 143, Issue 3, April 2005, Pages 449-457 en_US
dc.identifier.issn 0029-8549 (Print)
dc.identifier.issn 1432-1939 (Online)
dc.identifier.uri http://dx.doi.org/ 10.1007/s00442-004-1814-x
dc.identifier.uri http://hdl.handle.net/10576/10561
dc.description.abstract We studied competition between the obligate biotroph Puccinia triticina (designated here as Puccinia) and the facultative saprophyte Pyrenophora tritici-repentis (designated here as Pyrenophora) in older and younger leaves in a set of three host genotypes selected to be resistant to Puccinia only, Pyrenophora only, or neither. Age-related resistance is important for both of these pathogens. The facultative saprophyte Pyrenophora was generally a stronger competitor than the biotrophic Puccinia, even experiencing facilitation from the presence of Puccinia when Pyrenophora had the advantage of earlier inoculation. Both pathogen species produced the most spores when they were introduced before the competing species and more spores when introduced simultaneously compared to after the competitor. The pre-interactive niche of Puccinia was larger than the post-interactive niche and sporulation by Puccinia was substantially reduced in environments in which Pyrenophora had high sporulation rates. The pre-interactive niche of Pyrenophora was similar to the post-interactive niche and Pyrenophora had proportionally lower reductions in sporulation due to interspecific competition in the pre-interactive niche. en_US
dc.language.iso en en_US
dc.publisher Springer Berlin / Heidelberg en_US
dc.subject Facultative saprophytes en_US
dc.subject Impact niche en_US
dc.subject Obligate parasites en_US
dc.subject Requirement niche en_US
dc.subject Rust fungi en_US
dc.title Competition, facilitation, and niche differentiation in two foliar pathogens en_US
dc.type Article en_US

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