A comparative study of stress-related gene expression under single stress and intercross stress in rice

文献类型： 外文期刊

第一作者： Zhang, Y. P.

作者： Zhang, Y. P.;E, Z. G.;Wang, L.;Zhu, D. F.;Jiang, H.;Zhou, J.

作者机构：

关键词： Rice;Abiotic stress;Biotic stress;Hormone

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： 2015 年 14 卷 2 期

页码：

收录情况： SCI

摘要： Plant hormones play important roles in the crosstalk between biotic and abiotic stresses in rice throughout its entire growth period. However, these interactions are not completely understood. In this study, the physiological performance of rice seedlings under a single stress and a sequential combination of various stresses (intercross stress) was determined. We found that catalase, superoxide dismutase, and peroxidase activities and malondialdehyde were highly regulated by intercross stresses. Furthermore, the expression levels of pathogenesis-related genes and drought stress-related genes under various treatments were analyzed. We demonstrated that under drought-disease intercross stress, the expression levels of the PR4, PAL, and Cht-1 genes were significantly upregulated, while under salt-disease intercross stress, the expression levels of the PR1a, PBZ1, Gns1, and Cht-1 genes underwent significant changes. Regardless of the type of intercross stress, theexpression of LOX-RLL was significantly affected. We also showed that the expression of drought stress-related genes OsSKIPa, OsNADPH1, JRC0594, and OsGL1-2 was significantly regulated, suggesting that these genes play important roles in the interaction between biotic and abiotic stresses. We, therefore, conclude that the interactions between various types of biotic and abiotic stresses vary in a complex pattern and would require further in-depth investigation.

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