Gibberellins regulate iron deficiency-response by influencing iron transport and translocation in rice seedlings (oryza sativa)

doi:10.1186/s12870-017-1089-0

	Gibberellins regulate iron deficiency-response by influencing iron transport and translocation in rice seedlings (oryza sativa)
	Wang, Baolan ; Wei, Haifang ; Xue, Zhen 3; Zhang, Wen-Hao
	2017
发表期刊	ANNALS OF BOTANY
ISSN	0305-7364
卷号	119 期号:6 页码:945-956
摘要	Background and aims Gibberellins (GAs) are a class of plant hormones with diverse functions. However, there has been little information on the role of GAs in response to plant nutrient deficiency. Methods To evaluate the roles of GAs in regulation of Fe homeostasis, the effects of GA on Fe accumulation and Fe translocation in rice seedlings were investigated using wild-type, a rice mutant (euil)displaying enhnaced endogenous GA concentrations due to a defect in GA deactivation, and transgenic rice plants overexpressing OsEUI. Key Results Exposure to Fe-deficient medium significantly reduced biomass of rice plants. Both exogenous application of GA and an endogenous increase of bioactive GA enhanced Fe-deficiency response by exaggerating foliar chlorosis and reducing growth. Iron deficiency significantly suppressed production of GA(1) and GA(4), the biologically active GAs in rice. Exogenous application of GA significantly decreased leaf Fe concentration regardless of Fe supply. Iron concentration in shoot of eui1 mutants was lower than that of WT plants under both Fe-sufficient and Fe-deficient conditions. Paclobutrazol, an inhibitor of GA biosynthesis, alleviated Fe-deficiency responses, and overexpression of EUI significantly increased Fe concentration in shoots and roots. Furthermore, both exogenous application of GA and endogenous increase in GA resulting from EUI mutation inhibited Fe translocation within shoots by suppressing OsYSL2 expression, which is involved in Fe transport and translocation. Conclusions The novel findings provide compelling evidence to support the involvement of GA in mediation of Fe homeostasis in strategy II rice plants by negatively regulating Fe transport and translocation.
关键词	Rice (oryza sativa) Fe deficiency strategy II plant gibberellins Fe transport and translocation
学科领域	Plant Sciences
DOI	10.1186/s12870-017-1089-0
收录类别	SCI
语种	英语
WOS关键词	METAL-NICOTIANAMINE TRANSPORTER ; LONG-DISTANCE TRANSPORT ; STRATEGY-I PLANTS ; CYTOCHROME-P450 MONOOXYGENASE ; STRESS RESPONSES ; CELL ELONGATION ; FE UPTAKE ; ARABIDOPSIS ; GENES ; HOMEOSTASIS
WOS记录号	WOS:000408007000001
出版者	OXFORD UNIV PRESS
文献子类	Article
出版地	OXFORD
EISSN	1095-8290
资助机构	National Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31672227, 31101594] ; State Key Laboratory of Vegetation and Environmental Change
作者邮箱	whzhang@ibcas.ac.cn
作品OA属性	Green Published, gold
引用统计	被引频次：51[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/22260
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Chinese Acad Sci, Beijing Inst Life Sci, Res Network Global Change Biol, Beijing 100093, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Wang, Baolan,Wei, Haifang,Xue, Zhen,et al. Gibberellins regulate iron deficiency-response by influencing iron transport and translocation in rice seedlings (oryza sativa)[J]. ANNALS OF BOTANY,2017,119(6):945-956.
APA	Wang, Baolan,Wei, Haifang,Xue, Zhen,&Zhang, Wen-Hao.(2017).Gibberellins regulate iron deficiency-response by influencing iron transport and translocation in rice seedlings (oryza sativa).ANNALS OF BOTANY,119(6),945-956.
MLA	Wang, Baolan,et al."Gibberellins regulate iron deficiency-response by influencing iron transport and translocation in rice seedlings (oryza sativa)".ANNALS OF BOTANY 119.6(2017):945-956.

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