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Plant hormone jasmonate prioritizes defense over growth by interfering with gibberellin signaling cascade

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成果类型:
期刊论文
作者:
Dong-Lei Yang;Jian Yao;Chuan-Sheng Mei;Xiao-Hong Tong;Long-Jun Zeng;Qun Li;Lang-Tao Xiao;Tai-ping Sun;Jigang Li;Xing-Wang Deng;Chin Mei Lee;Michael F. Thomashow;Yinong Yang;Zuhua He;Sheng Yang He;Dong-Lei Yang;Jian Yao;Chuan-Sheng Mei;Xiao-Hong Tong;Long-Jun Zeng;Qun Li;Lang-Tao Xiao;Tai-ping Sun;Jigang Li;Xing-Wang Deng;Chin Mei Lee;Michael F. Thomashow;Yinong Yang;Zuhua He;Sheng Yang He
通讯作者:
Yang, YN
作者机构:
[Chin Mei Lee; Michael F. Thomashow; Jian Yao; Sheng Yang He] Michigan State Univ, Dept Energy Plant Res Lab, E Lansing, MI 48824 USA.
[Dong-Lei Yang; Qun Li; Long-Jun Zeng; Xiao-Hong Tong; Zuhua He] Chinese Acad Sci, Natl Key Lab Plant Mol Genet, Inst Plant Physiol & Ecol, Shanghai Inst Biol Sci, Shanghai 200032, Peoples R China.
[Jigang Li; Xing-Wang Deng] Yale Univ, Dept Mol Cellular & Dev Biol, New Haven, CT 06520 USA.
[Tai-ping Sun] Duke Univ, Dept Biol, Durham, NC 27705 USA.
[Lang-Tao Xiao] Hunan Agr Univ, Hunan Prov Key Lab Phytohormones, Changsha 410128, Hunan, Peoples R China.
通讯机构:
[Yang, YN] Univ Arkansas, Dept Plant Pathol, Fayetteville, AR 72701 USA.
语种:
英文
关键词:
disease resistance;plant growth;plant immunity;light response;plant defense
期刊:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN:
0027-8424
年:
2012
卷:
109
期:
19
页码:
E1192-E1200
文献类别:
WOS:Article
所属学科:
ESI学科类别:植物学&动物科学;WOS学科类别:Multidisciplinary Sciences
入藏号:
WOS:000304090600009;PMID:22529386
基金类别:
Natural Science Foundation of China [90817102, 30730064]; National Key Basic Research and Development Program [2011CB100700]; US Department of Agriculture National Research Initiative [2003-35319-17873]; National Science Foundation [DBI-0922747]; National Institutes of Health [R01AI068718]; US Department of Energy (Chemical Sciences, Geosciences, and Biosciences Division, Office of Basic Energy Sciences, Office of Science) [DE-FG02-91ER20021]
机构署名:
本校为其他机构
院系归属:
植物保护学院
生物科学技术学院
摘要:
Plants must effectively defend against biotic and abiotic stresses to survive in nature. However, this defense is costly and is often accompanied by significant growth inhibition. How plants coordinate the fluctuating growth-defense dynamics is not well understood and remains a fundamental question. Jasmonate (JA) and gibberellic acid (GA) are important plant hormones that mediate defense and growth, respectively. Binding of bioactive JA or GA ligands to cognate receptors leads to proteasome-dependent degradation of specific transcriptional repressors (the JAZ or DELLA family of proteins), which, at the resting state, represses cognate transcription factors involved in defense (e.g., MYCs) or growth [e.g. phytochrome interacting factors (PIFs)]. In this study, we found that the coi1 JA receptor mutants of rice (a domesticated monocot crop) and Arabidopsis (a model dicot plant) both exhibit hallmark phenotypes of GA-hypersensitive mutants. JA delays GA-mediated DELLA protein degradation, and the della mutant is less sensitive to JA for growth inhibition. Overexpression of a selected group of JAZ repressors in Arabidopsis plants partially phenocopies GA-associated phenotypes of the coi1 mutant, and JAZ9 inhibits RGA (a DELLA protein) interaction with transcription factor PIF3. Importantly, the pif quadruple (pifq) mutant no longer responds to JA-induced growth inhibition, and overexpression of PIF3 could partially overcome JA-induced growth inhibition. Thus, a molecular cascade involving the COI1-JAZ-DELLA-PIF signaling module, by which angiosperm plants prioritize JA-mediated defense over growth, has been elucidated.
参考文献:
Achard P, 2006, SCIENCE, V311, P91, DOI 10.1126/science.1118642
Achard P, 2003, PLANT CELL, V15, P2816, DOI 10.1105/tpc.015685
Achard P, 2007, P NATL ACAD SCI USA, V104, P6484, DOI 10.1073/pnas.0610717104
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Achard P, 2007, PLANT PHYSIOL, V143, P1163, DOI 10.1104/pp.106.092254

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