Maize plants sprayed with either jasmonic acid or its precursor, methyl linolenate, attract armyworm parasitoids, but the composition of attractants differs
Maize plants sprayed with either jasmonic acid or its precursor, methyl linolenate, attract armyworm parasitoids, but the composition of attractants differs
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DOI：
10.1111/j.1570-7458.2008.00767.x
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发表时间：
2008-11-01
影响因子：
1.9
通讯作者：
Takabayashi, Junji
中科院分区：
文献类型：
--
作者：
Ozawa, Rika;Shiojiri, Kaori;Takabayashi, Junji
已知用茉莉酸（JA）处理未侵染和粘虫侵染的玉米植株都能吸引寄生蜂，卡里谷绒茧蜂（Cotesia kariyai Watanabe）（膜翅目：茧蜂科）。在这里，我们表明，与JA前体的甲酯，亚麻酸甲酯（MeLin）的治疗，也会导致玉米植株吸引这种黄蜂，但不会导致内源性JA水平升高。无论是虫害或未侵染玉米植株MeLin处理释放的挥发性化学物质的定性和定量不同，从JA处理的植物排放。在MeLin处理过的植物散发出的化合物中，α-蒎烯和薄荷醇在使用选择室的二选一测试中以纯的形式吸引黄蜂。水杨酸甲酯、α-可巴烯和β-月桂烯的混合物也能吸引黄蜂。而（Z）-3-己烯基乙酸酯是该虫的主要引诱剂。在JA处理的植物中的kariyai。这些数据表明，除了JA之外，MeLin也具有增加C. kariyai，但它们诱导的引诱剂的组成不同。
Treatment of both uninfested and armyworm-infested maize plants with jasmonic acid (JA) is known to attract the parasitic wasp, Cotesia kariyai Watanabe (Hymenoptera: Braconidae). Here, we show that treatment with a methyl ester of a JA precursor, methyl linolenate (MeLin), also causes maize plants to attract this wasp, yet does not cause elevated levels of endogenous JA. The volatile chemicals emitted from either infested or uninfested maize plants treated with MeLin were qualitatively and quantitatively different from those emitted from JA-treated plants. Among compounds emitted from MeLin-treated plants, alpha-pinene and menthol attracted wasps in pure form in a two-choice test using a choice chamber. A mixture of methyl salicylate, alpha-copaene, and beta-myrcene also attracted wasps. In contrast, (Z)-3-hexenyl acetate was among the main attractants for C. kariyai in JA-treated plants. These data show that in addition to JA, MeLin also has the potential to increase the host-finding ability of C. kariyai, but that the composition of attractants they induce differs.