时间：
2023年11月2日（星期四）13:30-14:30
题目：
植物中挥发性有机物的生物合成与释放
主持人：
罗小舟 研究员
报告人：
廖攀博士，是香港浸会大学理学院生物系助理教授、博士生导师。兼任环境与生物分析国家重点实验室(香港浸会大学)和农业生物技术国家重点实验室(香港中文大学) 。廖博士于2015年获得香港大学分子生物学博士学位，并于2015年至2022年在香港大学和美国普渡大学进行博士后研究。
主要研究方向为中药、植物生物化学、药用植物生物技术。曾从事药用植物如丹参、其他唇形科药用植物 (百里香、牛至、迷迭香) ，以及番茄、拟南芥、矮牵牛等多种模式植物，研究花香味释放机制、萜类代谢调控、萜类和脂类代谢相关关键基因的克隆及体内外功能验证。
廖博士以第一作者(包括共同第一作者) 身份在Nat.Chem等学术期刊上发表了一系列原创性研究文章。例如 Nat. Chem. Biol.(封面文章），Nat.Commun.，PNAS，Plant Biotechnol.J.，Trends in Biotechnol.和Biotechnol.Adv.,已被Nat.Chem.Biol等期刊重点报道。共发表学术论文45篇，获美国专利1项，中国专利5项。他担任包括Nat在内的20多个国际期刊的审稿人。植物和植物生理学。
Plants emit volatile organic compounds (VOCs) that serve various purposes such as pollination, seed dispersal, and protection against parasites. VOCs also contribute to the aroma of fruits, vegetables, flowers, and leaves. While the biosynthesis of VOCs is wellstudied, less is known about how they are released from cells into the environment. Recentresearch found that a specific protein facilitates the emission of VOCs in petunia flowers，challenging the belief that their release is solely a passive diffusion process. To investigate further, a study focused on Petunia hybrida flowers, which emit high levels of VOCs derived from phenylalanine (Phe). The study discovered that a cell-wall localized protein, PhnsLTP3,aids in the release of VOCs from cells to the cuticle. Reducing PhnslTP3 led to decreased VoC emission and altered distribution, without affecting their overall quantity, The study also revealed that the cuticle acts as a major sink for VOCs, playing a crucial role in their concentration. Intracellular VOC accumulation was found to regulate their biosynthesis by feedback downregulation of Phe, protecting cells from the toxic effects of these compounds.These findings offer insights into the engineering of VOCs and minimizing undesired plant odors.
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