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Salt-tolerant and - sensitive alfalfa (Medicago sativa) cultivars have large variations in defense responses to the lepidopteran insect Spodoptera litura under normal and salt stress condition

文献类型：期刊论文

作者Lei, Yunting1,2,3; Liu, Qing2; Hettenhausen, Christian3; Cao, Guoyan3; Tan, Qing3; Zhao, Weiye3; Lin, Honghui1; Wu, Jianqiang3
刊名PLOS ONE
出版日期2017-07-18
卷号12期号:7页码:e0181589
ISSN号1932-6203
DOI10.1371/journal.pone.0181589
产权排序2
文献子类Article
英文摘要In nature, plants are often exposed to multiple stress factors at the same time. Yet, little is known about how plants modulate their physiology to counteract simultaneous abiotic and biotic stresses, such as soil salinity and insect herbivory. In this study, insect performance bioassays, phytohormone measurements, quantification of transcripts, and protein determination were employed to study the phenotypic variations of two alfalfa (Medicago sativa) cultivars in response to insect Spodoptera litura feeding under normal and salt stress condition. When being cultivated in normal soil, the salt-tolerant alfalfa cultivar Zhongmu-1 exhibited lower insect resistance than did the salt-sensitive cultivar Xinjiang Daye. Under salinity stress, the defense responses of Xinjiang Daye were repressed, whereas Zhongmu-1 did not show changes in resistance levels. It is likely that salinity influenced the resistance of Xinjiang Daye through suppressing the accumulation of jasmonic acid-isoleucine (JA-Ile), which is the bioactive hormone inducing herbivore defense responses, leading to attenuated trypsin proteinase inhibitor (TPI) activity. Furthermore, exogenous ABA supplementation suppressed the insect herbivory-induced JA/JA-Ile accumulation and levels of JAR1 (jasmonate resistant 1) and TPI, and further decreased the resistance of Xinjiang Daye, whereas Zhongmu-1 showed very little response to the increased ABA level. We propose a mechanism, in which high levels of abscisic acid induced by salt treatment may affect the expression levels of JAR1 and consequently decrease JA-Ile accumulation and thus partly suppress the defense of Xinjiang Daye against insects under salt stress. This study provides new insight into the mechanism by which alfalfa responds to concurrent abiotic and biotic stresses.
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WOS关键词ABSCISIC-ACID ; SALINITY STRESS ; NICOTIANA-ATTENUATA ; INDUCED RESISTANCE ; ABIOTIC STRESSES ; GENE-EXPRESSION ; PLANTS ; HERBIVORES ; ARABIDOPSIS ; JASMONATE
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000406061400057
出版者PUBLIC LIBRARY SCIENCE
源URL[http://210.75.237.14/handle/351003/29896]  
专题生物多样性与生态系统服务领域_生态系统恢复与生物多样性保育四川省重点实验室
成都生物研究所_生态研究
生物多样性与生态系统服务领域_中国科学院山地生态恢复与生物资源利用重点实验室
生物多样性与生态系统服务领域_生态研究
作者单位1.Sichuan Univ, Minist Educ, Coll Life Sci, State Key Lab Hydraul & Mt River Engn, Key Lab Bio, Chengdu, Sichuan, Peoples R China;
2.Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China;
3.Chinese Acad Sci, Dept Econ Plants & Biotechnol, Yunnan Key Lab Wild Plant Resources, Kunming Inst Bot, Kunming, Yunnan, Peoples R China
推荐引用方式
GB/T 7714		 Lei, Yunting,Liu, Qing,Hettenhausen, Christian,et al. Salt-tolerant and - sensitive alfalfa (Medicago sativa) cultivars have large variations in defense responses to the lepidopteran insect Spodoptera litura under normal and salt stress condition[J]. PLOS ONE,2017,12(7):e0181589.
APA Lei, Yunting.,Liu, Qing.,Hettenhausen, Christian.,Cao, Guoyan.,Tan, Qing.,...&Wu, Jianqiang.(2017).Salt-tolerant and - sensitive alfalfa (Medicago sativa) cultivars have large variations in defense responses to the lepidopteran insect Spodoptera litura under normal and salt stress condition.PLOS ONE,12(7),e0181589.
MLA Lei, Yunting,et al."Salt-tolerant and - sensitive alfalfa (Medicago sativa) cultivars have large variations in defense responses to the lepidopteran insect Spodoptera litura under normal and salt stress condition".PLOS ONE 12.7(2017):e0181589.

入库方式： OAI收割

来源：成都生物研究所

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