Up-regulation of MPK4 increases the feeding efficiency of the green peach aphid under elevated CO2 in Nicotiana attenuata
Guo, Huijuan1; Peng, Xinhong1; Gu, Liyuan1; Wu, Jianqiang2; Ge, Feng1; Sun, Yucheng1
2017-12-16
Source PublicationJOURNAL OF EXPERIMENTAL BOTANY
ISSN0022-0957
Volume68Issue:21-22Pages:5923-5935
Abstract

Previous research has shown that elevated CO2 reduces plant resistance against insects and enhances the water use efficiency of C-3 plants, which improves the feeding efficiency of aphids. Although plant mitogen-activated protein kinases (MAPKs) are known to regulate water relations and phytohormone-mediated resistance, little is known about the effect of elevated CO2 on MAPKs and the cascading effects on aphids. By using stably transformed Nicotiana attenuata plants silenced in MPK4, wound-induced protein kinase (WIPK), or salicylic acid-induced protein kinase (SIPK), we determined the functions of MAPKs in plant-aphid interactions and their responses to elevated CO2. The results showed that among all plant genotypes, inverted repeat MPK4 plants had the largest stomatal apertures, the lowest water content, the strongest jasmonic acid (JA)-dependent resistance, and the lowest aphid numbers, suggesting that MPK4 affects plant responses to aphids by regulating stomatal aperture and JA-dependent resistance. Regardless of aphid infestation, elevated CO2 up-regulated MPK4, but not WIPK or SIPK, in wild-type plants. Elevated CO2 increased the number, mean relative growth rate, and feeding efficiency of aphids on all plant genotypes except inverted repeat MPK4. We conclude that MPK4 is a CO2-responsive plant determinant that regulates the molecular interaction between plants and aphids.

KeywordElevated Co2 Feeding Behaviour Jasmonic Acid Mapk Myzus Persicae Nicotiana Attenuata Stomatal Closure
DOI10.1093/jxb/erx394
Language英语
WOS IDWOS:000418365600020
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/60606
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, Inst Zool, State Key Lab Integrated Management Pest Insects, Beijing, Peoples R China
2.Chinese Acad Sci, Dept Econ Plants & Biotechnol, Yunnan Key Lab Wild Plant Resources, Kunming Inst Bot, Kunming, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
Guo, Huijuan,Peng, Xinhong,Gu, Liyuan,et al. Up-regulation of MPK4 increases the feeding efficiency of the green peach aphid under elevated CO2 in Nicotiana attenuata[J]. JOURNAL OF EXPERIMENTAL BOTANY,2017,68(21-22):5923-5935.
APA Guo, Huijuan,Peng, Xinhong,Gu, Liyuan,Wu, Jianqiang,Ge, Feng,&Sun, Yucheng.(2017).Up-regulation of MPK4 increases the feeding efficiency of the green peach aphid under elevated CO2 in Nicotiana attenuata.JOURNAL OF EXPERIMENTAL BOTANY,68(21-22),5923-5935.
MLA Guo, Huijuan,et al."Up-regulation of MPK4 increases the feeding efficiency of the green peach aphid under elevated CO2 in Nicotiana attenuata".JOURNAL OF EXPERIMENTAL BOTANY 68.21-22(2017):5923-5935.
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