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The Three Lineages of the Diploid Hybrid Verticillium longisporum Differ in Virulence and Pathogenicity. | LitMetric

The Three Lineages of the Diploid Hybrid Verticillium longisporum Differ in Virulence and Pathogenicity.

Phytopathology

First and fifth authors: Plant Pathology and Crop Protection Division, Department of Crop Sciences, Faculty of Agriculture, Georg-August University of Göttingen, Grisebachstraße 6, D-37077 Göttingen, Germany; second and seventh authors: Department of Plant Pathology, and third author: Genome Center and Department of Plant Sciences, University of California, Davis; and fourth author: United States Department of Agriculture-Agricultural Research Service, 1636 E. Alisal Street, Salinas, CA 93905.

Published: May 2015

AI Article Synopsis

  • Verticillium longisporum is a significant pathogen affecting Brassicaceae crops globally, consisting of three distinct lineages formed through hybridization.
  • In pathogenicity tests on multiple crops, V. longisporum showed greater virulence on Brassicaceae than its relative V. dahliae, yet the latter was more virulent on non-Brassicaceae hosts.
  • Variations in virulence were observed among the V. longisporum lineages, with lineage A1/D1 being the most harmful to oilseed rape and A1/D2 to cabbage and horseradish, indicating V. longisporum might have a broader host range than previously recognized.

Article Abstract

Verticillium longisporum is an economically important vascular pathogen of Brassicaceae crops in different parts of the world. V. longisporum is a diploid hybrid that consists of three different lineages, each of which originated from a separate hybridization event between two different sets of parental species. We used 20 isolates representing the three V. longisporum lineages and the relative V. dahliae, and performed pathogenicity tests on 11 different hosts, including artichoke, cabbage, cauliflower, cotton, eggplant, horseradish, lettuce, linseed, oilseed rape (canola), tomato, and watermelon. V. longisporum was overall more virulent on the Brassicaceae crops than V. dahliae, which was more virulent than V. longisporum across the non-Brassicaceae crops. There were differences in virulence between the three V. longisporum lineages. V. longisporum lineage A1/D1 was the most virulent lineage on oilseed rape, and V. longisporum lineage A1/D2 was the most virulent lineage on cabbage and horseradish. We also found that on the non-Brassicaceae hosts eggplant, tomato, lettuce, and watermelon, V. longisporum was more or equally virulent than V. dahliae. This suggests that V. longisporum may have a wider potential host range than currently appreciated.

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Source
http://dx.doi.org/10.1094/PHYTO-10-14-0265-RDOI Listing

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