干旱区生态环境知识资源中心(Arid): Varying responses to combined water-stress and herbivory in maize for spider mite species that differ in host specialization

Arid

DOI	10.1016/j.envexpbot.2020.104131
	Varying responses to combined water-stress and herbivory in maize for spider mite species that differ in host specialization
	Gill, Gunbharpur S.; Bui, Huyen; Clark, Richard M.; Ramirez, Ricardo A.
通讯作者	Gill, GS
来源期刊	ENVIRONMENTAL AND EXPERIMENTAL BOTANY
ISSN	0098-8472
EISSN	1873-7307
出版年	2020
卷号	177
英文摘要	Water-stress commonly affects crops grown in arid and semi-arid regions. Apart from the direct impact of this abiotic stress on yield, a diverse community of herbivores can outbreak under these conditions, and plant responses to abiotic stress may alter plant defense responses that deter herbivores. Outbreaks of both generalist and specialist spider mites are strongly associated with hot and dry conditions in the field settings. To understand how water-stress impacts maize responses to spider mites, we conducted parallel greenhouse and field experiments with maize plants (B73 inbred line) subjected to optimal irrigation and water-stress conditions (50-60% and 5-10% volumetric water content (VWC), and 25-32% and 10-15% VWC, in the greenhouse and field, respectively). In addition to recording B73 responses to water-stress alone, we measured the population growth of the generalist twospotted spider mite (Tetranychus urticae, TSM) and the specialist Banks grass mite (Oligonychus pratensis, BGM) on optimally watered and water-stressed plants. We also measured plant defense protein activities (peroxidase (POD), polyphenol oxidase (PPO), chitinase (CHI) and trypsin inhibitor (TI)) at 1, 3, and 7 days post mite introduction for each irrigation treatment. For B73 plants exposed to water-stress, we observed increases in leaf temperature, leaf water potential, POD activity, as well as decreases in stomatal conductance and stem height. Populations of both mite species increased more rapidly on water-stressed B73 plants. While optimally irrigated B73 plants responded with similar plant defense activity to both mite species, combinations of plant water-stress and TSM herbivory resulted in increases in CHI and TI activity that were not observed for the respective treatments with BGM. Collectively, our results highlight a role for species-specific factors, possibly associated with herbivore host plant breadth, in impacting plant responses to herbivory in combination with an abiotic stress.
英文关键词	twospotted spider mite Banks grass mite chitinase peroxidase polyphenol oxidase trypsin inhibitor
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000546927300014
WOS关键词	CORN ; RESISTANCE ; DROUGHT ; DEFENSE ; TOMATO
WOS类目	Plant Sciences ; Environmental Sciences
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324986
作者单位	[Gill, Gunbharpur S.; Ramirez, Ricardo A.] Utah State Univ, Dept Biol, 5305 Old Main Hill, Logan, UT 84322 USA; [Bui, Huyen; Clark, Richard M.] Univ Utah, Sch Biol Sci, Salt Lake City, UT 84112 USA; [Clark, Richard M.] Univ Utah, Henry Eyring Ctr Cell & Genome Sci, Salt Lake City, UT 84112 USA; [Bui, Huyen] Montana State Univ, Ctr Biofilm Engn, Bozeman, MT 59717 USA
推荐引用方式 GB/T 7714	Gill, Gunbharpur S.,Bui, Huyen,Clark, Richard M.,et al. Varying responses to combined water-stress and herbivory in maize for spider mite species that differ in host specialization[J],2020,177.
APA	Gill, Gunbharpur S.,Bui, Huyen,Clark, Richard M.,&Ramirez, Ricardo A..(2020).Varying responses to combined water-stress and herbivory in maize for spider mite species that differ in host specialization.ENVIRONMENTAL AND EXPERIMENTAL BOTANY,177.
MLA	Gill, Gunbharpur S.,et al."Varying responses to combined water-stress and herbivory in maize for spider mite species that differ in host specialization".ENVIRONMENTAL AND EXPERIMENTAL BOTANY 177(2020).