Plant stomatal closure improves aphid feeding under elevated CO2

doi:10.1111/gcb.12858

	Plant stomatal closure improves aphid feeding under elevated CO2
	Sun, Yucheng ; Guo, Huijuan ; Yuan, Liang ; Wei, Jianing ; Zhang, Wenhao1 ; Ge, Feng
	2015
发表期刊	GLOBAL CHANGE BIOLOGY
ISSN	1354-1013
卷号	21 期号:7 页码:2739-2748
摘要	Stomata help plants regulate CO2 absorption and water vapor release in response to various environmental changes, and plants decrease their stomatal apertures and enhance their water status under elevated CO2. Although the bottom-up effect of elevated CO2 on insect performance has been extensively studied, few reports have considered how insect fitness is altered by elevated CO2-induced changes in host plant water status. We tested the hypothesis that aphids induce stomatal closure and increase host water potential, which facilitates their passive feeding, and that this induction can be enhanced by elevated CO2. Our results showed that aphid infestation triggered the abscisic acid (ABA) signaling pathway to decrease the stomatal apertures of Medicago truncatula, which consequently decreased leaf transpiration and helped maintain leaf water potential. These effects increased xylem-feeding time and decreased hemolymph osmolarity, which thereby enhanced phloem-feeding time and increased aphid abundance. Furthermore, elevated CO2 up-regulated an ABA-independent enzyme, carbonic anhydrase, which led to further decrease in stomatal aperture for aphid-infested plants. Thus, the effects of elevated CO2 and aphid infestation on stomatal closure synergistically improved the water status of the host plant. The results indicate that aphid infestation enhances aphid feeding under ambient CO2 and that this enhancement is increased under elevated CO2.
关键词	Acyrthosiphon pisum elevated CO2 feeding behavior Medicago truncatula stomata water potential
学科领域	Biodiversity Conservation ; Ecology ; Environmental Sciences
DOI	10.1111/gcb.12858
收录类别	SCI
语种	英语
WOS关键词	MEDICAGO-TRUNCATULA ; ABSCISIC-ACID ; DROUGHT TOLERANCE ; INSECT RESPONSES ; WATER RELATIONS ; SOYBEAN PLANTS ; PEACH APHID ; ARABIDOPSIS ; PERFORMANCE ; INCREASES
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000356422500024
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1365-2486
资助机构	Chinese Academy of Sciences [XDB11050400] ; National Nature Science Fund of China [31170390, 31221091]
作者邮箱	gef@ioz.ac.cn
引用统计	被引频次：40[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25731
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Zool, State Key Lab Integrated Management Pest Insects, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Sun, Yucheng,Guo, Huijuan,Yuan, Liang,et al. Plant stomatal closure improves aphid feeding under elevated CO2[J]. GLOBAL CHANGE BIOLOGY,2015,21(7):2739-2748.
APA	Sun, Yucheng,Guo, Huijuan,Yuan, Liang,Wei, Jianing,Zhang, Wenhao,&Ge, Feng.(2015).Plant stomatal closure improves aphid feeding under elevated CO2.GLOBAL CHANGE BIOLOGY,21(7),2739-2748.
MLA	Sun, Yucheng,et al."Plant stomatal closure improves aphid feeding under elevated CO2".GLOBAL CHANGE BIOLOGY 21.7(2015):2739-2748.

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