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ABA receptor PYL9 promotes drought resistance and leaf senescence
Zhao, Yang1,2; Chan, Zhulong1,3; Gao, Jinghui2; Xing, Lu2,5; Cao, Minjie1,4; Yu, Chunmei2,6; Hu, Yuanlei2,7; You, Jun3; Shi, Haitao3; Zhu, Yingfang2; Gong, Yuehua2,8; Mu, Zixin2,9; Wang, Haiqing2,10; Deng, Xin2,11; Wang, Pengcheng2; Bressan, Ray A.2; Zhu, Jian-Kang1,2
2016-02-16
Source PublicationPROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume113Issue:7Pages:1949-1954
SubtypeArticle
AbstractDrought 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.
KeywordDrought Stress Abscisic Acid Pyl Dormancy Arabidopsis
WOS HeadingsScience & Technology
DOI10.1073/pnas.1522840113
WOS KeywordRAV1 TRANSCRIPTION FACTOR ; ABSCISIC-ACID ; GENE-EXPRESSION ; ARABIDOPSIS ; PROTEIN ; STRESS ; DORMANCY ; PATHWAYS ; FAMILY ; PLANT
Indexed BySCI
Language英语
Funding OrganizationNIH(R01GM059138) ; Chinese Academy of Sciences ; National Natural Science Foundation of China(31370302) ; Knowledge Innovative Key Program of CAS(Y329631O0263) ; Sino-Africa Joint Research Project Grant(SAJC201324)
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000370220000069
Citation statistics
Cited Times:215[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://210.75.249.4/handle/363003/5775
Collection中国科学院西北高原生物研究所
Affiliation1.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
11.Chinese Acad Sci, Inst Bot, Key Lab Plant Resources, Beijing 100093, Peoples R China
Recommended Citation
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.
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