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12-OPDA Reductase and OPC-8:0 CoA Ligase Mediate Jasmonic Acid Synthesis in Lasiodiplodia iranensis

文献类型: 外文期刊

作者: Li, Ruiying 1 ; Sun, Xingyun 1 ; Fu, Yin 2 ; Wu, Dan 1 ; Chen, Pengcheng 1 ; Zheng, Pu 1 ;

作者机构: 1.Jiangnan Univ, Sch Biotechnol, Key Lab Ind Biotechnol, Minist Educ, Wuxi 214122, Peoples R China

2.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Key Lab East China Sea Fishery Resources Exploitat, Minist Agr & Rural Affairs, Shanghai 200090, Peoples R China

关键词: jasmonic acid; Lasiodiplodia iranensis; comparativetranscriptomics; RNAi; fungal JA synthesis; 12-OPDA reductase; OPC-8:0 CoA ligase; CoA ligase

期刊名称:JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY ( 影响因子:6.2; 五年影响因子:6.4 )

ISSN: 0021-8561

年卷期: 2024 年 72 卷 42 期

页码:

收录情况: SCI

摘要: Jasmonic acid (JA), a phytohormone with a distinct flavor, is an important fragrance ingredient. The filamentous fungi Lasiodiplodia sp. can produce JA via fermentation. Based on comparative transcriptome analysis of L. iranensis M2017288 in static and shaking culture, 13 differentially expressed genes potentially related to JA synthesis were screened, including g4442 and g8524, annotated as 12-OPDA reductase (LiOPR) and OPC-8:0 CoA ligase (LiOPCL), respectively. Quantitative real-time PCR and RNA interference assays confirmed that g4442 and g8524 expression levels were positively correlated with the JA synthesis. Recombinant LiOPR protein utilized (15Z)-12-oxophyto-10,15-dienoic acid (12-OPDA) to generate (9S,13S,15Z)-12-oxo-10,11-dihydrophyto-15-enoate (OPC8:0). JA was detected in cascade reactions of both recombinant LiOPR and LiOPCL coupled with Saccharomyces cerevisiae. Phylogenetic analyses revealed that LiOPR and LiOPCL belong to a different evolutionary branch from plants, suggesting that they are essential enzymes for fungal JA synthesis, which is worthy of further investigation.

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