ABA receptor PYL9 promotes drought resistance and leaf senescence

	ABA receptor PYL9 promotes drought resistance and leaf senescence
	Zhao, Yang 1,2; Chan, Zhulong 1,3; Gao, Jinghui 2; Xing, Lu 2,5; Cao, Minjie 1,4; Yu, Chunmei 2,6; Hu, Yuanlei 2,7; You, Jun 3; Shi, Haitao 3; Zhu, Yingfang 2
刊名	proceedings of the national academy of sciences of the united states of america
	2016-02-16
卷号	113 期号:7 页码:1949-1954
关键词	drought stress abscisic acid PYL dormancy Arabidopsis
英文摘要	drought stress is an important environmental factor limiting plant productivity. in this study, we screened drought-resistant transgenic plants from 65 promoter-pyrabactin resistance 1-like (pyl) abscisic acid (aba) receptor gene combinations and discovered that prd29a::pyl9 transgenic lines showed dramatically increased drought resistance and drought-induced leaf senescence in both arabidopsis and rice. previous studies suggested that aba promotes senescence by causing ethylene production. however, we found that aba promotes leaf senescence in an ethylene-independent manner by activating sucrose nonfermenting 1-related protein kinase 2s (snrk2s), which subsequently phosphorylate aba-responsive element-binding factors (abfs) and related to aba-insensitive 3/vp1 (rav1) transcription factors. the phosphorylated abfs and rav1 up-regulate the expression of senescence-associated genes, partly by up-regulating the expression of oresara 1. the pyl9 and aba-insensitive 1-1 single mutants, pyl8-1pyl9 double mutant, and snrk2.2/3/6 triple mutant showed reduced aba-induced leaf senescence relative to the wt, whereas prd29a::pyl9 transgenic plants showed enhanced aba-induced leaf senescence. we found that leaf senescence may benefit drought resistance by helping to generate an osmotic potential gradient, which is increased in prd29a::pyl9 transgenic plants and causes water to preferentially flow to developing tissues. our results uncover the molecular mechanism of aba-induced leaf senescence and suggest an important role of pyl9 and leaf senescence in promoting resistance to extreme drought stress.
WOS标题词	science & technology
类目[WOS]	multidisciplinary sciences
研究领域[WOS]	science & technology - other topics
关键词[WOS]	rav1 transcription factor ; abscisic-acid ; gene-expression ; arabidopsis ; protein ; stress ; dormancy ; pathways ; family ; plant
收录类别	SCI
语种	英语
WOS记录号	WOS:000370220000069
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn/handle/363003/5775]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, Shanghai Inst Biol Sci, Shanghai Ctr Plant Stress Biol, Shanghai 200032, Peoples R China 2.Purdue Univ, Dept Hort & Landscape Architecture, W Lafayette, IN 47907 USA 3.Chinese Acad Sci, Sino Africa Joint Res Ctr, Wuhan Bot Garden, Key Lab Plant Germplasm Enhancement & Specialty A, Wuhan 430074, Peoples R China 4.Northwest A&F Univ, Coll Anim Sci & Technol, Yangling 712100, Shaanxi, Peoples R China 5.Univ Sci & Technol China, Sch Life Sci, Hefei 230026, Peoples R China 6.Nantong Univ, Coll Life Sci, Nantong 226019, Jiangsu, Peoples R China 7.Peking Univ, Coll Life Sci, Beijing 100871, Peoples R China 8.Yibin Univ, Coll Life Sci & Food Engn, Chengdu 644000, Sichuan, Peoples R China 9.Northwest A&F Univ, Coll Life Sci, Yangling 712100, Shaanxi, Peoples R China 10.Chinese Acad Sci, Northwest Plateau Inst Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Yang,Chan, Zhulong,Gao, Jinghui,et al. ABA receptor PYL9 promotes drought resistance and leaf senescence[J]. proceedings of the national academy of sciences of the united states of america,2016,113(7):1949-1954.
APA	Zhao, Yang.,Chan, Zhulong.,Gao, Jinghui.,Xing, Lu.,Cao, Minjie.,...&Zhu, Jian-Kang.(2016).ABA receptor PYL9 promotes drought resistance and leaf senescence.proceedings of the national academy of sciences of the united states of america,113(7),1949-1954.
MLA	Zhao, Yang,et al."ABA receptor PYL9 promotes drought resistance and leaf senescence".proceedings of the national academy of sciences of the united states of america 113.7(2016):1949-1954.