Host Range of Verticillium isaacii and Verticillium klebahnii from Artichoke, Spinach, and Lettuce

Verticillium is a genus that includes major vascular wilt pathogens. Recently, multilocus phylogenetic analyses of the genus identified five new species, including Verticillium isaacii and V. klebahnii, both of which occur in agricultural soils in coastal California and have been isolated from asymp...

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Veröffentlicht in:Plant disease. - 1997. - 99(2015), 7 vom: 25. Juli, Seite 933-938
1. Verfasser: Gurung, Suraj (VerfasserIn)
Weitere Verfasser: Short, Dylan P G, Hu, Xiaoping, Sandoya, German V, Hayes, Ryan J, Koike, Steven T, Subbarao, Krishna V
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2015
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article
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520 |a Verticillium is a genus that includes major vascular wilt pathogens. Recently, multilocus phylogenetic analyses of the genus identified five new species, including Verticillium isaacii and V. klebahnii, both of which occur in agricultural soils in coastal California and have been isolated from asymptomatic and diseased spinach and lettuce plants. Little data are available regarding their pathogenicity and virulence on a broader range of crops important to the region. Four isolates each of V. isaacii and V. klebahnii along with two reference isolates of V. dahliae races 1 and 2 were inoculated on eight crops (artichoke, cauliflower, eggplant, lettuce, pepper, tomato, spinach, and strawberry) in a greenhouse experiment. After 8 weeks, plants were assessed for disease severity to determine the relative host ranges of Verticillium isolates. Additionally, 13 lettuce lines resistant to race 1 and partially resistant to race 2 of V. dahliae were screened against V. isaacii and V. klebahnii to evaluate their responses. Three of four V. isaacii and four of four V. klebahnii isolates tested were nonpathogenic on all crops tested except those indicated below. One V. isaacii isolate caused wilt on artichoke and 'Salinas' lettuce and most isolates of both species caused varying degrees of Verticillium wilt on strawberry. Lettuce lines resistant to V. dahliae race 1 and partially resistant to V. dahliae race 2 also exhibited resistance to all of the isolates of V. isaacii and V. klebahnii. Thus, at least some isolates in the populations of V. isaacii and V. klebahnii have the potential to become significant pathogens of coastal California crops. However, resistance developed against V. dahliae also offers resistance to the pathogenic isolates of both species, at least in lettuce 
650 4 |a Journal Article 
700 1 |a Short, Dylan P G  |e verfasserin  |4 aut 
700 1 |a Hu, Xiaoping  |e verfasserin  |4 aut 
700 1 |a Sandoya, German V  |e verfasserin  |4 aut 
700 1 |a Hayes, Ryan J  |e verfasserin  |4 aut 
700 1 |a Koike, Steven T  |e verfasserin  |4 aut 
700 1 |a Subbarao, Krishna V  |e verfasserin  |4 aut 
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