Characterization of phenotypic variation and genome aberrations observed among Phytophthora ramorum isolates from diverse hosts.

ABSTRACT:

Background

Accumulating evidence suggests that genome plasticity allows filamentous plant pathogens to adapt to changing environments. Recently, the generalist plant pathogen Phytophthora ramorum has been documented to undergo irreversible phenotypic alterations accompanied by chromosomal aberrations when infecting trunks of mature oak trees (genus Quercus). In contrast, genomes and phenotypes of the pathogen derived from the foliage of California bay (Umbellularia californica) are usually stable. We define this phenomenon as host-induced phenotypic diversification (HIPD). P. ramorum also causes a severe foliar blight in some ornamental plants such as Rhododendron spp. and Viburnum spp., and isolates from these hosts occasionally show phenotypes resembling those from oak trunks tha

SUBMITTER: Elliott M 

PROVIDER: S-EPMC5932867 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature