characterizations and fine mapping of a mutant gene for high tillering and dwarf in rice (oryza sativa l.)

	characterizations and fine mapping of a mutant gene for high tillering and dwarf in rice (oryza sativa l.)
	Zou JH ; Chen ZX ; Zhang SY ; Zhang WP ; Jiang GH ; Zhao Xianfeng ; Zhai WX ; Pan XB ; Zhu LH
刊名	Planta
	2005
卷号	222 期号:4 页码:604-612
关键词	OsCCD7 HTD1 gene high tillering dwarf map-based cloning rice (Oryza sativa L.) GREEN-REVOLUTION GIBBERELLIN-SYNTHESIS APICAL DOMINANCE ALPHA-SUBUNIT VICIA-FABA ARABIDOPSIS AUXIN INHIBITION DISTANCE ENCODES
通讯作者	Zhu, LH (通讯作者), Chinese Acad Sci, Inst Genet & Dev Biol, Natl Plant Gene Res Ctr Beijing, Beijing 100101, Peoples R China
收录类别	SCI
公开日期	2010-08-25
附注	A rice htd-1 mutant, related to tillering and dwarfing, was characterized. We show that the htd-1 mutant increases its tiller number by releasing axillary buds from dormant stage rather than by initiating more axillary buds. The dwarf is caused by averagely reducing each internode and panicle. Based on this dwarfing pattern, the htd-1 mutant could be grouped into dn-type dwarf defined by Takeda (Gamma Field Symp 16:1, 1977). In addition, the dwarfing of the htd-1 mutant was found independent of GA based on the analyses of two GA-mediated processes. Based on the quantitative determination of IAA and ABA and application of the two hormones exogenously to the seedlings, we inferred that the high tillering capacity of the htd-1 mutant should not be attributed to a defect in the synthesis of IAA or ABA. The genetic analysis of the htd-1 mutant indicated that the phenotypes of high tillering and dwarf were controlled by a recessive gene, termed htd1. By map-based cloning, the htd1 gene was fine mapped in a 30-kb DNA region on chromosome 4. Sequencing the target DNA region and comparing the counterpart DNA sequences between the htd-1 mutant and other rice varieties revealed a nucleotide substitution corresponding to an amino acid substitution from prolin to leucine in a predicted rice gene, OsCCD7, the rice orthologous gene of AtMAX3/CCD7. With the evidence of the association between the presence of one amino acid change in OsCCD7 and the abnormal phenotypes of the htd-1 mutant, OsCCD7 was identified as the candidate of the HTD1 gene.
内容类型	期刊论文
源URL	[http://124.16.136.157/handle/311060/4964]
专题	软件研究所_信息安全国家重点实验室_期刊论文
推荐引用方式 GB/T 7714	Zou JH,Chen ZX,Zhang SY,et al. characterizations and fine mapping of a mutant gene for high tillering and dwarf in rice (oryza sativa l.)[J]. Planta,2005,222(4):604-612.
APA	Zou JH.,Chen ZX.,Zhang SY.,Zhang WP.,Jiang GH.,...&Zhu LH.(2005).characterizations and fine mapping of a mutant gene for high tillering and dwarf in rice (oryza sativa l.).Planta,222(4),604-612.
MLA	Zou JH,et al."characterizations and fine mapping of a mutant gene for high tillering and dwarf in rice (oryza sativa l.)".Planta 222.4(2005):604-612.