Proteomic analysis of mycelial proteins from Magnaporthe oryzae under nitrogen starvation

文献类型： 外文期刊

第一作者： Zhou, X. -G.

作者： Zhou, X. -G.;Zhao, Z. -W.;Zhou, X. -G.;Yu, P.;Dong, C.;Yao, C. -X.;Ding, Y. -M.;Tao, N.;Zhou, X. -G.;Yu, P.;Dong, C.;Yao, C. -X.;Ding, Y. -M.;Tao, N.

作者机构：

关键词： Mass spectrometry;Mycelium;Nitrogen stress;Proteome;Rice blast fungus

期刊名称：GENETICS AND MOLECULAR RESEARCH （ 影响因子：0.764； 五年影响因子：0.912 ）

ISSN： 1676-5680

年卷期： 2016 年 15 卷 2 期

页码：

收录情况： SCI

摘要： Magnaporthe oryzae is an important model system in studies of plant pathogenic fungi, and nitrogen is a key nutrient source affecting microbial growth and development. In order to understand how nitrogen stress causes changes in mycelial proteins, we analyzed differentially expressed mycelial proteins from the M. oryzae virulent strain CH-63 using two-dimensional electrophoresis and mass spectrometry in complete medium or under nitrogen starvation conditions. A total of 975 +/- 70 and 1169 +/- 90 protein spots were detected in complete medium and under nitrogen starvation conditions, respectively. Forty-nine protein spots exhibited at least 2-fold upregulation or down-regulation at the protein level according to PDQuest7.4. Moreover, 43 protein spots were successfully identified by matrix-assisted laser desorption/ionization-time-of-flight/time-of-flight mass spectrometry. Among these spots, 6 proteins were functionally unknown and 37 proteins were categorized into 5 groups according to their functions, including development, metabolism, biosynthesis, and biological process. These 37 proteins were further analyzed for their enriched metabolic pathways by KOBAS2.0, and 14 proteins were found to be involved in glycolysis, tricarboxylic acid cycle, and nitrogen metabolism. Taken together, the regulation of M. oryzae growth under the nitrogen starvation conditions appears to be complex because of the various proteins and enzymes involved.

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