TaOPR2 encodes a 12-oxo-phytodienoic acid reductase involved in the biosynthesis of jasmonic acid in wheat (Triticum aestivum L.)

文献类型: 外文期刊

第一作者: Wang, Yukun

作者: Wang, Yukun;Yuan, Guoliang;Yuan, Shaohua;Duan, Wenjing;Wang, Peng;Bai, Jianfang;Zhang, Fengting;Gao, Shiqing;Zhang, Liping;Zhao, Changping;Wang, Yukun;Yuan, Guoliang;Yuan, Shaohua;Duan, Wenjing;Wang, Peng;Bai, Jianfang;Zhang, Fengting;Gao, Shiqing;Zhang, Liping;Zhao, Changping;Duan, Wenjing;Wang, Peng

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关键词: Jasmonic acid;Biosynthesis;12-oxo-phytodienoic acid reductase;Wheat

期刊名称:BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS ( 影响因子:3.575; 五年影响因子:3.381 )

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收录情况: SCI

摘要: The 12-oxo-phytodienoic acid reductases (OPRs) are involved in the various processes of growth and development in plants, and classified into the OPRI and OPRII subgroups. In higher plants, only OPRII subgroup genes take part in the biosynthesis of endogenous jasmonic acid. In this study, we isolated a novel OPRII subgroup gene named TaOPR2 (GeneBank accession: KM216389) from the thermo-sensitive genic male sterile (TGMS) wheat cultivar BS366. TaOPR2 was predicted to encode a protein with 390 amino acids. The encoded protein contained the typical oxidored_FMN domain, the C-terminus peroxisomal-targeting signal peptide, and conserved FMN-binding sites. TaOPR2 was mapped to wheat chromosome 7B and located on peroxisome. Protein evolution analysis revealed that TaOPR2 belongs to the OPRII subgroup and shares a high degree of identity with other higher plant OPR proteins. The quantitative real-time PCR results indicated that the expression of TaOPR2 is inhibited by abscisic acid (ABA), salicylic acid (SA), gibberellic acid (GA(3)), low temperatures and high salinity. In contrast, the expression of TaOPR2 can be induced by wounding, drought and methyl jasmonate (MeJA). Furthermore, the transcription level of TaOPR2 increased after infection with Puccinia striiformis f. sp. tritici and Puccinia recondite f. sp. tritici. TaOPR2 has NADPH-dependent oxidoreductase activity. In addition, the constitutive expression of TaOPR2 can rescue the male sterility phenotype of Arabidopsis mutant opr3. These results suggest that TaOPR2 is involved in the biosynthesis of jasmonic acid (JA) in wheat. (C) 2016 Elsevier Inc. All rights reserved.

分类号: Q5

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