Dynamic Extreme Aneuploidy (DEA) in the vegetable pathogen Phytophthora capsici sheds light on instant evolution and intractability

Author:

Hu Jian,Shrestha Sandesh,Zhou Yuxin,Liu Xili,Lamour KurtORCID

Abstract

summaryOomycete plant pathogens are notoriously difficult to control, and individual isolates are highly unstable; making routine research challenging. Sequencing reveals extreme aneuploidy for single-spore progeny of the vegetable pathogen Phytophthora capsici; a phenomenon dubbed Dynamic Extreme Aneuploidy (DEA). Although extreme, the aneuploidy appears to be moderately stable. A single sporulating plant lesion may produce an armada of genetically unique individuals and helps explain the rapid increase of advantageous alleles (e.g. drug resistance), mating type switches to allow sex and the widely observed phenomenon, loss of heterozygosity (LOH). Investigation of other oomycetes indicate this phenomenon is not unique to P. capsici.

Publisher

Cold Spring Harbor Laboratory

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