Functional Characterization of An Allene Oxide Synthase Involved in Biosynthesis of Jasmonic Acid and Its Influence on Metabolite Profiles and Ethylene Formation in Tea (Camellia sinensis) Flowers

文献类型： 外文期刊

第一作者： Peng, Qiyuan

作者： Peng, Qiyuan;Zhou, Ying;Liao, Yinyin;Zeng, Lanting;Xu, Xinlan;Jia, Yongxia;Yang, Ziyin;Peng, Qiyuan;Zhou, Ying;Liao, Yinyin;Zeng, Lanting;Xu, Xinlan;Jia, Yongxia;Yang, Ziyin;Peng, Qiyuan;Liao, Yinyin;Zeng, Lanting;Yang, Ziyin;Dong, Fang;Li, Jianlong;Tang, Jinchi;Li, Jianlong;Tang, Jinchi

作者机构：

关键词： aroma; Camellia sinensis; insect; jasmonic acid; metabolite; tea; volatile

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.923； 五年影响因子：6.132 ）

ISSN： 1422-0067

年卷期： 2018 年 19 卷 8 期

页码：

收录情况： SCI

摘要： Jasmonic acid (JA) is reportedly involved in the interaction between insects and the vegetative parts of horticultural crops; less attention has, however, been paid to its involvement in the interaction between insects and the floral parts of horticultural crops. Previously, we investigated the allene oxide synthase 2 (AOS2) gene that was found to be the only JA synthesis gene upregulated in tea (Camellia sinensis) flowers exposed to insect (Thrips hawaiiensis (Morgan)) attacks. In our present study, transient expression analysis in Nicotiana benthamiana plants confirmed that CsAOS2 functioned in JA synthesis and was located in the chloroplast membrane. In contrast to tea leaves, the metabolite profiles of tea flowers were not significantly affected by 10 h JA (2.5 mM) treatment as determined using ultra-performance liquid chromatography/quadrupole time-of-flight mass spectrometry, and gas chromatography-mass spectrometry. Moreover, JA treatment did not significantly influence ethylene formation in tea flowers. These results suggest that JA in tea flowers may have different functions from JA in tea leaves and other flowers.

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