Expressing an (E)-beta-farnesene synthase in the chloroplast of tobacco affects the preference of green peach aphid and its parasitoid
文献类型: 外文期刊
第一作者: Wang, Gen-Ping
作者: Wang, Gen-Ping;Wang, Cheng-She;Xia, Lan-Qin;Wang, Gen-Ping;Yu, Xiu-Dao;Yu, Xiu-Dao;Fan, Jia
作者机构:
关键词: Aphid;chloroplast;Diaeretiella rapae;(E)-beta-farnesene synthase;Myzus persicae;tobacco
期刊名称:JOURNAL OF INTEGRATIVE PLANT BIOLOGY ( 影响因子:7.061; 五年影响因子:6.002 )
ISSN: 1672-9072
年卷期: 2015 年 57 卷 9 期
页码:
收录情况: SCI
摘要: (E)--Farnesene (EF) synthase catalyses the production of EF, which for many aphids is the main or only component of the alarm pheromone causing the repellence of aphids and also functions as a kairomone for aphids' natural enemies. Many plants possess EF synthase genes and can release EF to repel aphids. In order to effectively recruit the plant-derived EF synthase genes for aphid control, by using chloroplast transit peptide (CTP) of the small subunit of Rubisco (rbcS) from wheat (Triticum aestivum L.), we targeted AaFS1, an EF synthase gene from sweet wormwood (Artemisia annua L.), to the chloroplast of tobacco to generate CTP+AaFS1 transgenic lines. The CTP+AaFS1 transgenic tobacco plants could emit EF at a level up to 19.25ng/day per g fresh tissues, 4-12 fold higher than the AaFS1 transgenic lines without chloroplast targeting. Furthermore, aphid/parasitoid behavioral bioassays demonstrated that the CTP+AaFS1 transgenic tobacco showed enhanced repellence to green peach aphid (Myzus persicae) and attracted response of its parasitoid Diaeretiella rapae, thus affecting aphid infestation at two trophic levels. These data suggest that the chloroplast is an ideal subcellular compartment for metabolic engineering of plant-derived EF synthase genes to generate a novel type of transgenic plant emitting an alarm pheromone for aphid control.
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