Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 413785
Title The Arabidopsis thaliana DNA-binding protein AHL19 mediates Verticillium wilt resistance
Author(s) Yadeta, K.A.; Hanemian, M.; Smit, P.; Hiemstra, J.A.; Pereira, A.; Marco, Y.; Thomma, B.P.H.J.
Source Molecular Plant-Microbe Interactions 24 (2011)12. - ISSN 0894-0282 - p. 1582 - 1591.
Department(s) Laboratory of Phytopathology
Nursery Stock
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) at-hook protein - ralstonia-solanacearum - microbial pathogens - gene-expression - albo-atrum - tomato ve1 - disease - dahliae - defense - identification
Abstract Verticillium spp. are destructive soilborne fungal pathogens that cause vascular wilt diseases in a wide range of plant species. Verticillium wilts are particularly notorious, and genetic resistance in crop plants is the most favorable means of disease control. In a gain-of-function screen using an activation-tagged Arabidopsis mutant collection, we identified four mutants, A1 to A4, which displayed enhanced resistance toward the vascular wilt species Verticillium dahliae, V. albo-atrum and V. longisporum but not to Fusarium oxysporum f. sp. raphani. Further testing revealed that mutant A2 displayed enhanced Ralstonia solanacearum resistance, while mutants A1 and A3 were more susceptible toward Pseudomonas syringae pv. tomato. Identification of the activation tag insertion site in the A1 mutant revealed an insertion in close proximity to the gene encoding AHL19, which was constitutively expressed in the mutant. AHL19 knock-out alleles were found to display enhanced Verticillium susceptibility whereas overexpression of AHL19 resulted in enhanced Verticillium resistance, showing that AHL19 acts as a positive regulator of plant defense.
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