Ultraviolet-B enhances the resistance of multiple plant species to lepidopteran insect herbivory through the jasmonic acid pathway.
Ultraviolet-B enhances the resistance of multiple plant species to lepidopteran insect herbivory through the jasmonic acid pathway.
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UV-B通过茉莉酸途径增强多种植物对鳞翅目昆虫草食性的抵抗力
DOI：
10.1038/s41598-017-18600-7
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发表时间：
2018-01-10
影响因子：
4.6
通讯作者：
Wu J
中科院分区：
文献类型：
--
作者：
Qi J;Zhang M;Lu C;Hettenhausen C;Tan Q;Cao G;Zhu X;Wu G;Wu J
陆地植物通过积累吸收紫外线的代谢物来保护自己免受紫外线B（UV-B）的伤害，这些代谢物也可以作为抗昆虫毒素。以前的研究表明，UV-B增强了不同植物物种对刺吸式害虫的抗性;然而，UV-B是否以及如何影响植物对咀嚼毛虫的防御还没有很好的了解。在这里，我们表明，UV-B处理增加了斜纹夜蛾草食诱导的茉莉酸（JA）在拟南芥中的生产，从而拟南芥表现出对斜纹夜蛾的抗性提高。利用JA和防御代谢产物硫代葡萄糖苷（GS）生物合成受损的突变体，我们发现UV-B诱导的斜纹夜蛾抗性依赖于JA调节的GS和一种未知的抗虫代谢产物。同样，UV-B处理也提高了JA-异亮氨酸共轭物和防御相关的次生代谢产物在烟草，水稻和玉米这些植物处理后，与模拟的鳞翅目昆虫的植食性，一致，这些植物表现出较高的抗昆虫幼虫。利用JA生物合成或信号转导受损的转基因植物，我们进一步证明了UV-B增强的防御反应也需要烟草和水稻中的JA途径。我们的研究结果揭示了一个可能保守的JA依赖的机制，UV-B增强植物防御鳞翅目昆虫。
Land plants protect themselves from ultraviolet-B (UV-B) by accumulating UV-absorbing metabolites, which may also function as anti-insect toxins. Previous studies have shown that UV-B enhances the resistance of different plant species to pierce-sucking pests; however, whether and how UV-B influences plant defense against chewing caterpillars are not well understood. Here we show that UV-B treatment increasedSpodoptera lituraherbivory-induced jasmonic acid (JA) production in Arabidopsis and thereby Arabidopsis exhibited elevated resistance toS.litura. Using mutants impaired in the biosynthesis of JA and the defensive metabolites glucosinolates (GSs), we show that the UV-B-induced resistance toS.liturais dependent on the JA-regulated GSs and an unidentified anti-insect metabolite(s). Similarly, UV-B treatment also enhanced the levels of JA-isoleucine conjugate and defense-related secondary metabolites in tobacco, rice, and maize after these plants were treated with simulated herbivory of lepidopteran insects; consistently, these plants showed elevated resistance to insect larvae. Using transgenic plants impaired in JA biosynthesis or signaling, we further demonstrate that the UV-B-enhanced defense responses also require the JA pathway in tobacco and rice. Our findings reveal a likely conserved JA-dependent mechanism by which UV-B enhances plant defense against lepidopteran insects.
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影响因子：
7.3
作者：
Mackerness, SAH;Surplus, SL;Thomas, B
通讯作者：
Thomas, B
影响因子：
11.6
作者：
Kang, Jin-Ho;Wang, Lei;Baldwin, Ian T.
通讯作者：
Baldwin, Ian T.
影响因子：
2.7
作者：
Caputo, Carla;Rutitzky, Mariana;Ballare, Carlos L.
通讯作者：
Ballare, Carlos L.
DOI：
10.1007/978-3-642-13145-5_12
发表时间：
2011-01-01
期刊：
PROGRESS IN BOTANY 72
影响因子：
--
作者：
Kuhlmann, Franziska;Mueller, Caroline
通讯作者：
Mueller, Caroline
影响因子：
27.5
作者：
Demkura, Patricia V.;Ballare, Carlos L.
通讯作者：
Ballare, Carlos L.