Molecular cloning and characterization of a stress responsive peroxidase gene HbPRX42 from rubber tree

文献类型： 外文期刊

第一作者： Wang, Li-Feng

作者： Wang, Li-Feng;Wang, Ji-Kun;An, Feng;Xie, Gui-Shui

作者机构：

关键词： Drought;HbPRX42;Hevea brasiliensis;Hormone;Peroxidase

期刊名称：BRAZILIAN JOURNAL OF BOTANY （ 影响因子：1.296； 五年影响因子：1.394 ）

ISSN： 1806-9959

年卷期： 2016 年 39 卷 2 期

页码：

收录情况： SCI

摘要： Plant peroxidases participate in versatile biological processes and stress responses. Peroxidase activity significantly increased under drought stress in rubber tree. To identify the functions of peroxidase genes in response to drought stress, the full-length cDNA of HbPRX42 was isolated from rubber tree. The HbPRX42 contains 338 amino acid residues and a plant peroxidase-like superfamily domain. Phylogenetic analysis with Arabidopsis Class III peroxidases revealed that HbPRX42 shared high identities with AtPRX42. Although HbPRX42 was expressed in all tissues, it was preferentially expressed in flower and latex in rubber tree. HbPRX42 expression was significantly upregulated in leaves by drought stress. Moreover, light, mechanical wounding, H2O2, abscisic acid, ethylene, methyl jasmonic acid, and salicylic acid treatments also led to marked accumulation of HbPRX42 transcripts in leaves, too. However, HbPRX42 transcripts were downregulated by powdery mildew infection. In a word, these results indicated the involvement of HbPRX42 in both biotic and abiotic stress responses via multiple signaling pathways in rubber tree.

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