Identification and Characterization of a Novel Monoterpene Synthase from Soybean Restricted to Neryl Diphosphate Precursor
文献类型： 外文期刊
第一作者： Zhang, Man
作者： Zhang, Man;Liu, Jianyu;Li, Kai;Yu, Deyue;Zhang, Man
作者机构：
期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）
ISSN： 1932-6203
年卷期： 2013 年 8 卷 10 期
页码：
收录情况： SCI
摘要： Terpenes are important defensive compounds against herbivores and pathogens. Here, we report the identification of a new monoterpene synthase gene, GmNES, from soybean. The transcription of GmNES was up-regulated in soybean plants that were infested with cotton leafworm (Prodenia litura), mechanically wounded or treated with salicylic acid (SA). Gas chromatography-mass spectrometry (GC-MS) analysis revealed that recombinant GmNES enzyme exclusively produced nerol, generated from a newly identified substrate for monoterpene synthase: neryl diphosphate (NPP). This finding indicates that GmNES is a nerol synthase gene in soybean. Subcellular localization using GFP fusions showed that GmNES localized to the chloroplasts. Transgenic tobacco overexpressing GmNES was generated. In dual-choice assays, the GmNES-expressing tobacco lines significantly repelled cotton leafworm. In feeding tests with transgenic plants, the growth and development of cotton leafworm were significantly retarded. This study confirms the ecological role of terpenoids and provides new insights into their metabolic engineering in transgenic plants.
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