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	The arabidopsis spontaneous cell death1 gene, encoding a zeta-carotene desaturase essential for carotenoid biosynthesis, is involved in chloroplast development, photoprotection and retrograde signalling
	Dong, Haili; Deng, Yan; Mu, Jinye; Lu, Qingtao; Wang, Yiqin; Xu, Yunyuan; Chu, Chengcai; Chong, Kang; Lu, Congming; Zuo, Jianru
刊名	Cell research
	2007-05-01
卷号	17期号:5页码:458-470
关键词	Carotenoid biosynthesis Cell death Chloroplast development Photoprotection Arabidopsis spc1/zds
ISSN号	1001-0602
DOI	10.1038/cr.2007.37
通讯作者	Zuo, jianru(jrzuo@genetics.ac.cn)
英文摘要	Carotenoids, a class of natural pigments found in all photosynthetic organisms, are involved in a variety of physiological processes, including coloration, photoprotection, biosynthesis of abscisic acid (aba) and chloroplast biogenesis. although carotenoid biosynthesis has been well studied biochemically, the genetic basis of the pathway is not well understood. here, we report the characterization of two allelic arabidopsis mutants, spontaneous cell death 1-1 (spc1-1) and spc1-2. the weak allele spc1-1 mutant showed characteristics of bleached leaves, accumulation of superoxide and mosaic cell death. the strong mutant allele spc1-2 caused a complete arrest of plant growth and development shortly after germination, leading to a seedling-lethal phenotype. genetic and molecular analyses indicated that spc1 encodes a putative zeta-carotene desaturase (zds) in the carotenoid biosynthesis pathway. analysis of carotenoids revealed that several major carotenoid compounds downstream of spc1/zds were substantially reduced in spc1-1, suggesting that spc1 is a functional zds. consistent with the downregulated expression of cao and porb, the chlorophyll content was decreased in spc1-1 plants. in addition, expression of lhcb1.1, lhcb1.4 and rbcs was absent in spc1-2, suggesting the possible involvement of carotenoids in the plastid-to-nucleus retrograde signaling. the spc1-1 mutant also displays an aba-deficient phenotype that can be partially rescued by the externally supplied phytohormone. these results suggest that spc1/zds is essential for biosynthesis of carotenoids and plays a crucial role in plant growth and development.
WOS关键词	ARABIDOPSIS-THALIANA ; CELL-DEATH ; PROTOCHLOROPHYLLIDE OXIDOREDUCTASE ; PHOTOSYSTEM-II ; ABSCISIC-ACID ; PHYTOENE DESATURATION ; MOLECULAR-BIOLOGY ; CHLOROPHYLL-A ; NUCLEAR GENES ; HIGHER-PLANTS
WOS研究方向	Cell Biology
WOS类目	Cell Biology
语种	英语
出版者	INST BIOCHEMISTRY & CELL BIOLOGY
WOS记录号	WOS:000247525700010
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2383277
专题	中国科学院大学
通讯作者	Zuo, Jianru
作者单位	1.Chinese Acad Sci, Inst Genet & Dev Biol, State Key Lab Plant Genom, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Inst Genet & Dev Biol, Natl Plant Gene Res Ctr Beijing, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 4.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Dong, Haili,Deng, Yan,Mu, Jinye,et al. The arabidopsis spontaneous cell death1 gene, encoding a zeta-carotene desaturase essential for carotenoid biosynthesis, is involved in chloroplast development, photoprotection and retrograde signalling[J]. Cell research,2007,17(5):458-470.
APA	Dong, Haili.,Deng, Yan.,Mu, Jinye.,Lu, Qingtao.,Wang, Yiqin.,...&Zuo, Jianru.(2007).The arabidopsis spontaneous cell death1 gene, encoding a zeta-carotene desaturase essential for carotenoid biosynthesis, is involved in chloroplast development, photoprotection and retrograde signalling.Cell research,17(5),458-470.
MLA	Dong, Haili,et al."The arabidopsis spontaneous cell death1 gene, encoding a zeta-carotene desaturase essential for carotenoid biosynthesis, is involved in chloroplast development, photoprotection and retrograde signalling".Cell research 17.5(2007):458-470.

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