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 431432
Title A Phytophthora sojae Heat Shock Transcription Factor PsHSF1 is Required for Oxidative Stress Tolerance and Suppression of Plant Immunity
Author(s) Sheng, Yuting; Wang, Yonglin; Dong, Suomeng; Tao, Kai; Zheng, Xiaobo; Hua, C.; Meijer, H.J.G.; Govers, F.; Wang, Yuanchao
Source In: Book of Abstracts Oomycete Molecular Genetics Network (OMGN), Nanjing, P.R. China, 26-28 May 2012. - - p. 80 - 80.
Event oomycete Molecular Genetics Network Congress, Nanjijng, China, 2012-05-26/2012-05-28
Department(s) Laboratory of Phytopathology
EPS-2
Publication type Abstract in scientific journal or proceedings
Publication year 2012
Abstract Although much is known about that reactive oxygen species (ROS) play central roles in plant defense system, the mechanisms how phytopathogens adapt and counteract the plant-driven ROS remain little understood. Genome-wide analysis of ROS tolerance-related transcription factors in Phytophthora species uncovered an extremely huge gene family of heat shock transcription factors (HSFs), 22 HSF genes in P. sojae, 24 HSF genes in P. infestans and 18 HSF genes in P. ramorum, while only 1-4 HSFs in true fungi, such as Magnaporthe or yeast. A highly up-regulated P. sojae HSF under oxidative stress condition, PsHSF1, was given a detailed study, which was also strongly up-regulated under heat shock stress and at cyst germination stage. PsHSF1 silencing reduced the rate of cyst germination. Hyphal growth of PsHSF1- silenced transformants was severely affected under the stress of hydrogen peroxide or heat shock compared with wide-type (WT). The soybean infection of PsHSF1-silenced transformants was significantly delayed. Cytological staining showed that the mutants compromised to suppress hydrogen peroxide accumulation and innate immunity of soybean cell around the infection area. The results demonstrate that PsHSF1 is required for the adaptation and response to stress mediated with ROS in P. sojae, and suggest that PsHSF1 played an important role in counteracting ROS-mediated plant innate immunity.
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