Arabidopsis thaliana SEED DORMANCY 4-LIKE regulates dormancy and germination by mediating the gibberellin pathway

doi:10.1093/jxb/erz471

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	Arabidopsis thaliana SEED DORMANCY 4-LIKE regulates dormancy and germination by mediating the gibberellin pathway
	Cao, Hong ; Han, Yi 3,4; Li, Jingyi 4; Ding, Meng 4; Li, Yu 4; Li, Xiaoying 4; Chen, Fengying ; Soppe, Wim J. J.; Liu, Yongxiu
刊名	JOURNAL OF EXPERIMENTAL BOTANY
	2020
卷号	71 期号:3 页码:919-933
关键词	Abscisic acid Arabidopsis thaliana AtSdr4L DOG1 gibberellin pathway seed dormancy seed germination
ISSN号	0022-0957
DOI	10.1093/jxb/erz471
文献子类	Article
英文摘要	The molecular mechanisms underlying seed dormancy and germination are not fully understood. Here, we show that Arabidopsis thaliana SEED DORMANCY 4-LIKE (AtSdr4L) is a novel specific regulator of dormancy and germination. AtSdr4L encodes a protein with an unknown biochemical function that is localized in the nucleus and is expressed specifically in seeds. Loss of function of AtSdr4L results in increased seed dormancy. The germination of freshly harvested seeds of the Atsdr4l mutant is insensitive to gibberellin (GA). After-ripened mutant seeds are hypersensitive to the GA biosynthesis-inhibitor paclobutrazol but show unaltered sensitivity to abscisic acid. Several GA biosynthesis genes and GA-regulated cell wall remodeling genes are down-regulated in the mutant in both dormant and after-ripened seeds. These results suggest that the Atsdr4l mutation causes both decreased GA biosynthesis and reduced responses. In addition, a genetic analysis indicated that AtSdr4L is epistatic to DELAY OF GERMINATION1 (DOG1) for dormancy and acts upstream of RGA-LIKE 2 (RGL2) in the GA pathway. We propose that AtSdr4L regulates seed dormancy and germination by mediating both the DOG1 and GA pathways.
学科主题	Plant Sciences
电子版国际标准刊号	1460-2431
出版地	OXFORD
WOS关键词	2C PROTEIN PHOSPHATASES ; ACIDIC PHYTOHORMONES ; FUNCTIONAL-ANALYSIS ; LOW-TEMPERATURE ; GENE ; ENCODES ; BIOSYNTHESIS ; EXPRESSION ; MUTANTS ; SLEEPY1
WOS研究方向	Plant Sciences
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000515119200017
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31071063, 31571257] ; National Basic Research Program of ChinaNational Basic Research Program of China [2014CB943400]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/21897]
专题	中科院植物分子生理学重点实验室
作者单位	1.Soppe, Wim J. J.] Max Planck Inst Plant Breeding Res, Dept Plant Breeding & Genet, D-50829 Cologne, Germany 2.Soppe, Wim J. J.] Rijk Zwaan, NL-2678 ZG De Lier, Netherlands 3.Chinese Acad Sci, Inst Bot, Key Lab Plant Mol Physiol, Beijing 100093, Peoples R China 4.Shandong Prov Ctr Forest Tree Germplasm Resources, Jinan 250102, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Cao, Hong,Han, Yi,Li, Jingyi,et al. Arabidopsis thaliana SEED DORMANCY 4-LIKE regulates dormancy and germination by mediating the gibberellin pathway[J]. JOURNAL OF EXPERIMENTAL BOTANY,2020,71(3):919-933.
APA	Cao, Hong.,Han, Yi.,Li, Jingyi.,Ding, Meng.,Li, Yu.,...&Liu, Yongxiu.(2020).Arabidopsis thaliana SEED DORMANCY 4-LIKE regulates dormancy and germination by mediating the gibberellin pathway.JOURNAL OF EXPERIMENTAL BOTANY,71(3),919-933.
MLA	Cao, Hong,et al."Arabidopsis thaliana SEED DORMANCY 4-LIKE regulates dormancy and germination by mediating the gibberellin pathway".JOURNAL OF EXPERIMENTAL BOTANY 71.3(2020):919-933.