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 533681
Title Solanaceous exocyst subunits are involved in immunity to diverse plant pathogens
Author(s) Du, Yu; Overdijk, Elysa J.R.; Berg, Jeroen A.; Govers, Francine; Bouwmeester, Klaas
Source Journal of Experimental Botany 69 (2018)3. - ISSN 0022-0957 - p. 655 - 666.
DOI http://dx.doi.org/10.1093/jxb/erx442
Department(s) Laboratory of Phytopathology
Laboratory of Plant Breeding
EPS
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) Basal defence - exocyst complex - exocytosis - gene silencing - phylogenetic analysis - plant resistance - Solanaceous plants - vesicle trafficking
Abstract The exocyst, a multiprotein complex consisting of eight subunits, plays an essential role in many biological processes by mediating secretion of post-Golgi-derived vesicles towards the plasma membrane. In recent years, roles for plant exocyst subunits in pathogen defence have been uncovered, largely based on studies in the model plant Arabidopsis. Only a few studies have been undertaken to assign the role of exocyst subunits in plant defence in other plants species, including crops. In this study, predicted protein sequences from exocyst subunits were retrieved by mining databases from the Solanaceous plants Nicotiana benthamiana, tomato, and potato. Subsequently, their evolutionary relationship with Arabidopsis exocyst subunits was analysed. Gene silencing in N. benthamiana showed that several exocyst subunits are required for proper plant defence against the (hemi-)biotrophic plant pathogens Phytophthora infestans and Pseudomonas syringae. In contrast, some exocyst subunits seem to act as susceptibility factors for the necrotrophic pathogen Botrytis cinerea. Furthermore, the majority of the exocyst subunits were found to be involved in callose deposition, suggesting that they play a role in basal plant defence. This study provides insight into the evolution of exocyst subunits in Solanaceous plants and is the first to show their role in immunity against multiple unrelated pathogens.
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