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The host jasmonic acid pathway regulates the transcriptomic changes of dodder and host plant under the scenario of caterpillar feeding on dodder
Qin, Yan1,2; Zhang, Jingxiong1,3; Hettenhausen, Christian1; Liu, Hui1; Li, Shalan1,3; Shen, Guojing1; Cao, Guoyan1; Wu, Jianqiang1
Corresponding AuthorWu, Jianqiang(wujianqiang@mail.kib.ac.cn)
2019-12-04
Source PublicationBMC PLANT BIOLOGY
ISSN1471-2229
Volume19Issue:1Pages:12
AbstractBackground: Dodder (Cuscuta spp., Convolvulaceae) species are obligate leaf- and rootless parasites that totally depend on hosts to survive. Dodders naturally graft themselves to host stems to form vascular fusion, from which they obtain nutrients and water. In addition, dodders and their hosts also exchange various other molecules, including proteins, mRNAs, and small RNAs. It is very likely that vascular fusion also allows inter-plant translocation of systemic signals between dodders and host plants and these systemic signals may have profound impacts on the physiology of dodder and host plants. Herbivory is a common biotic stress for plants. When a dodder parasite is attacked by lepidopteran insects, how dodder responds to caterpillar feeding and whether there are inter-plant communications between the host plants and the parasites is still poorly understood. Results: Here, wild-type (WT) tobacco and a tobacco line in which jasmonic acid (JA) biosynthesis was silenced (AOC-RNAi) were used as the hosts, and the responses of dodders and their host plants to herbivory by Spodoptera litura caterpillars on the dodders were investigated. It was found that after caterpillar attack, dodders grown on AOC-RNAi tobacco showed much a smaller number of differentially expressed genes, although the genotypes of the tobacco plants did not have an effect on the simulated S. litura feeding-induced JA accumulation in dodders. We further show that S. litura herbivory on dodder also led to large changes in transcriptome and defensive metabolites in the host tobacco, leading to enhanced resistance to S. litura, and the JA pathway of tobacco host is critical for these systemic responses. Conclusions: Our findings indicate that during caterpillar attack on dodder, the JA pathway of host plant is required for the proper transcriptomic responses of both dodder and host plants. This study highlights the importance of the host JA pathway in regulating the inter-plant systemic signaling between dodder and hosts.
KeywordCaterpillar Cuscuta Defense Dodder Insect herbivory Jasmonic acid Systemic signal Tobacco Transcriptome
DOI10.1186/s12870-019-2161-8
Indexed BySCI ; SCI
Language英语
WOS IDWOS:000505232500003
Citation statistics
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/70664
Collection资源植物与生物技术所级重点实验室
Corresponding AuthorWu, Jianqiang
Affiliation1.Chinese Acad Sci, Dept Econ Plants & Biotechnol, Yunnan Key Lab Wild Plant Resources, Kunming Inst Bot,Innovat Acad Seed Design, Kunming 650201, Yunnan, Peoples R China
2.Xingyi Normal Univ Nationalities, 1 Xingyi Rd, Xingyi City 562400, Guizhou, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Qin, Yan,Zhang, Jingxiong,Hettenhausen, Christian,et al. The host jasmonic acid pathway regulates the transcriptomic changes of dodder and host plant under the scenario of caterpillar feeding on dodder[J]. BMC PLANT BIOLOGY,2019,19(1):12.
APA Qin, Yan.,Zhang, Jingxiong.,Hettenhausen, Christian.,Liu, Hui.,Li, Shalan.,...&Wu, Jianqiang.(2019).The host jasmonic acid pathway regulates the transcriptomic changes of dodder and host plant under the scenario of caterpillar feeding on dodder.BMC PLANT BIOLOGY,19(1),12.
MLA Qin, Yan,et al."The host jasmonic acid pathway regulates the transcriptomic changes of dodder and host plant under the scenario of caterpillar feeding on dodder".BMC PLANT BIOLOGY 19.1(2019):12.
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