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Elucidation of the Regular Emission Mechanism of Volatile beta-Ocimene with Anti-insect Function from Tea Plants (Camellia sinensis) Exposed to Herbivore Attack

文献类型：外文期刊

第一作者： Jian, Guotai

作者： Jian, Guotai;Jia, Yongxia;Zhou, Xiaochen;Liao, Yinyin;Dai, Guangyi;Zhou, Ying;Zeng, Lanting;Jian, Guotai;Jia, Yongxia;Zhou, Xiaochen;Liao, Yinyin;Dai, Guangyi;Zhou, Ying;Zeng, Lanting;Jian, Guotai;Zhou, Xiaochen;Liao, Yinyin;Zeng, Lanting;Li, Jianlong;Tang, Jinchi;Li, Jianlong;Tang, Jinchi;Zeng, Lanting

作者机构：

关键词： tea; Camellia sinensis; insect-resistant; regular emission; beta-ocimene synthase; volatile

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （影响因子：5.279；五年影响因子：5.269 ）

ISSN： 0021-8561

年卷期： 2021 年 69 卷 38 期

页码：

收录情况： SCI

摘要： Herbivore-induced plant volatiles (HIPVs) play an important role in insect resistance. As a common HIPV in tea plants (Camellia sinensis), beta-ocimene has shown anti-insect function in other plants. However, whether beta-ocimene in tea plants also provides insect resistance, and its mechanism of synthesis and emission are unknown. In this study, beta-ocimene was confirmed to interfere with tea geometrid growth via signaling. Light was identified as the key factor controlling regular emission of beta-ocimene induced by the wounding from tea geometrids. beta-Ocimene synthase (CsBOS1) was located in plastids and catalyzed beta-ocimene formation in overexpressed tobacco. CsBOS1 expression in tea leaves attacked by tea geometrids showed a day-low and night-high variation pattern, while CsABCG expression involved in volatile emission showed the opposite pattern. These two genes might regulate the regular beta-ocimene emission from tea plants induced by tea geometrid attack. This study advances the understanding on HIPV emission and signaling in tea plants.

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