Ultraviolet-B enhances the resistance of multiple plant species to lepidopteran insect herbivory through the jasmonic acid pathway
Qi, Jinfeng1; Zhang, Mou2; Lu, Chengkai1; Hettenhausen, Christian1; Tan, Qing1; Cao, Guoyan1; Zhu, Xudong3; Wu, Guoxing2; Wu, Jianqiang1
2018-01-10
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume8Pages:277
Abstract

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 increased Spodoptera litura herbivory-induced jasmonic acid (JA) production in Arabidopsis and thereby Arabidopsis exhibited elevated resistance to S. litura. Using mutants impaired in the biosynthesis of JA and the defensive metabolites glucosinolates (GSs), we show that the UV-B-induced resistance to S. litura is 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.

DOI10.1038/s41598-017-18600-7
Language英语
WOS IDWOS:000419670000001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/60470
Collection植物化学与西部植物资源持续利用国家重点实验室
Affiliation1.Chinese Acad Sci, Kunming Inst Bot, Yunnan Key Lab Wild Plant Resources, Dept Econ Plants & Biotechnol, Kunming 650201, Yunnan, Peoples R China
2.Yunnan Agr Univ, Coll Plant Protect, Kunming 650201, Yunnan, Peoples R China
3.China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou 31006, Zhejiang, Peoples R China
Recommended Citation
GB/T 7714
Qi, Jinfeng,Zhang, Mou,Lu, Chengkai,et al. Ultraviolet-B enhances the resistance of multiple plant species to lepidopteran insect herbivory through the jasmonic acid pathway[J]. SCIENTIFIC REPORTS,2018,8:277.
APA Qi, Jinfeng.,Zhang, Mou.,Lu, Chengkai.,Hettenhausen, Christian.,Tan, Qing.,...&Wu, Jianqiang.(2018).Ultraviolet-B enhances the resistance of multiple plant species to lepidopteran insect herbivory through the jasmonic acid pathway.SCIENTIFIC REPORTS,8,277.
MLA Qi, Jinfeng,et al."Ultraviolet-B enhances the resistance of multiple plant species to lepidopteran insect herbivory through the jasmonic acid pathway".SCIENTIFIC REPORTS 8(2018):277.
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