中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 武汉植物园
  3. 中国科学院武汉植物园
热门
ABA receptor PYL9 promotes drought resistance and leaf senescence

文献类型：期刊论文

作者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
刊名PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
出版日期2016-02-16
卷号113期号:7页码:1949-1954
关键词drought stress abscisic acid PYL dormancy Arabidopsis
ISSN号0027-8424
DOI10.1073/pnas.1522840113
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.
资助项目NIH[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研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000370220000069
出版者NATL ACAD SCIENCES
源URL[http://202.127.146.157/handle/2RYDP1HH/117]  
专题中国科学院武汉植物园
通讯作者Zhu, Jian-Kang
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.

入库方式： OAI收割

来源：武汉植物园

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。