Expression patterns of defence genes and antioxidant defence responses in a rice variety that is resistant to leaf blast but susceptible to neck blast

文献类型: 外文期刊

第一作者: Hao, Zhong N.

作者: Hao, Zhong N.;Wang, Lian P.;Tao, Rong X.

作者机构:

关键词: Stage resistance;Oryza sativa;Magnaporthe oryzae;Defence gene;Antioxidant enzyme;Malondialdehyde

期刊名称:PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY ( 影响因子:2.747; 五年影响因子:2.388 )

ISSN: 0885-5765

年卷期: 2009 年 74 卷 2 期

页码:

收录情况: SCI

摘要: The rice stage resistance variety Jiajing3768 is resistant to leaf blast but susceptible to neck blast. This variety was used to analyze the expression patterns of defence genes and antioxidant defence responses in the leaves at the seedling stage (LSS) and necks at the preliminary heading stage (NPHS), after inoculation with Magnaporthe oryzae. We found that defence genes PR1b (pathogenesis-related class 1b), PR4, PR10a, JIOsPR10 (jasmonic acid induced rice PR 10), Gns1 (1,3; 1,4-beta-glucanase), Cht-1 (chitinase), and LOX (lipoxygenase) may play roles in the stage resistance in Jiajing3768; PAL (phenylalanine ammonia-lyase) and CHS (chalcone synthase) could participate in defending Jiajing3768 against neck blast but not leaf blast. The antioxidant enzymes superoxide dismutase, peroxidase, catalase, glutathione reductase, and malondialdehyde coordinately participate in the stage resistance to blast in Jiajing3768, and that oxidative damage is less in the LSS than in the NPHS. (C) 2009 Elsevier Ltd. All rights reserved.

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