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 365869
Title Conserved C-Terminal Motifs Required for Avirulence and Suppression of Cell Death by Phytophthora sojae effector Avr1b
Author(s) Dou, D.; Kale, S.D.; Wang, X.; Chen, Y.; Wang, Q.; Jiang, R.H.Y.; Arredondo, F.D.; Anderson, R.G.; Thakur, P.B.; McDowell, J.M.; Wang, Y.; Tyler, B.M.
Source The Plant Cell 20 (2008). - ISSN 1040-4651 - p. 1118 - 1133.
Department(s) Laboratory of Phytopathology
Publication type Refereed Article in a scientific journal
Publication year 2008
Keyword(s) broad-spectrum resistance - plant-disease-resistance - nucleotide-binding-site - late blight resistance - host-targeting signal - e3 ubiquitin ligase - phytopathogenic bacteria - solanum-bulbocastanum - innate immunity - downy mildew
Abstract The sequenced genomes of oomycete plant pathogens contain large superfamilies of effector proteins containing the protein translocation motif RXLR-dEER. However, the contributions of these effectors to pathogenicity remain poorly understood. Here, we show that the Phytophthora sojae effector protein Avr1b can contribute positively to virulence and can suppress programmed cell death (PCD) triggered by the mouse BAX protein in yeast, soybean (Glycine max), and Nicotiana benthamiana cells. We identify three conserved motifs (K, W, and Y) in the C terminus of the Avr1b protein and show that mutations in the conserved residues of the W and Y motifs reduce or abolish the ability of Avr1b to suppress PCD and also abolish the avirulence interaction of Avr1b with the Rps1b resistance gene in soybean. W and Y motifs are present in at least half of the identified oomycete RXLR-dEER effector candidates, and we show that three of these candidates also suppress PCD in soybean. Together, these results indicate that the W and Y motifs are critical for the interaction of Avr1b with host plant target proteins and support the hypothesis that these motifs are critical for the functions of the very large number of predicted oomycete effectors that contain them
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