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

文献类型：期刊论文

作者Cao, Hong; Han, Yi4,5; Li, Jingyi4; Ding, Meng4; Li, Yu4; Li, Xiaoying4; Chen, Fengying; Soppe, Wim J. J.; Liu, Yongxiu
刊名JOURNAL OF EXPERIMENTAL BOTANY
出版日期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
DOI10.1093/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
出版地OXFORD
电子版国际标准刊号1460-2431
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
WOS记录号WOS:000515119200017
出版者OXFORD UNIV PRESS
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]
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.] Rijk Zwaan, NL-2678 ZG De Lier, Netherlands
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Soppe, Wim J. J.] Max Planck Inst Plant Breeding Res, Dept Plant Breeding & Genet, D-50829 Cologne, Germany
4.Shandong Prov Ctr Forest Tree Germplasm Resources, Jinan 250102, Peoples R China
5.Chinese Acad Sci, Inst Bot, Key Lab Plant Mol Physiol, Beijing 100093, 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.

入库方式： OAI收割

来源：植物研究所

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