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ARS Home » Pacific West Area » Salinas, California » Crop Improvement and Protection Research » Research » Publications at this Location » Publication #385936

Research Project: Management of Pathogens for Strawberry and Vegetable Production Systems

Location: Crop Improvement and Protection Research

Title: Inter- and Intraspecific Biological Diversity in Verticillium

item Klosterman, Steven

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 6/29/2021
Publication Date: 6/29/2021
Citation: Klosterman, S.J. 2021. Inter- and intraspecific biological diversity in Verticillium. Pathogenomics and Effectoromics of Verticillium Species Webinar, June 29, 2021 (virtual).

Interpretive Summary:

Technical Abstract: The genus Verticillium contains ten plant-associated species. The diversity between species in their morphology and host range is highlighted. The species Verticillium dahliae is the most widespread and has the broadest host range among these species. Different biological and genetic characteristics within this species define its population structure, including nearly eight clonal types, several races, multiple vegetative compatibility groupings, two mating types, and defoliating and nondefoliating isolates. In one example, horizontal gene transfer from the fungus Fusarium oxysporum to V. dahliae led to the defoliating phenotype observed on woody plant hosts. But substantial genetic variations in V. dahliae populations can also be observed at the level of a single field, as illustrated in another example. The genetic bases for this diversity are now being resolved through population genomics approaches.