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	Requirement of KNAT1/BP for the development of abscission zones in Arabidopsis thaliana
	Wang, XQ ; Xu, WH ; Ma, LG ; Fu, ZM ; Deng, XW ; Li, JY ; Wang, YH
	2006
关键词	abscission zone Arabidopsis thaliana BP/KNAT1 microarray pedicle KNOTTED1-LIKE HOMEOBOX GENES ALTERS LEAF MORPHOLOGY SHOOT APICAL MERISTEM INFLORESCENCE ARCHITECTURE ECTOPIC EXPRESSION ABSCISING PEDICELS TRANSGENIC PLANTS NMR-SPECTROSCOPY TOMATO FLOWERS FINE STRUCTURE
英文摘要	The KNAT1 gene is a member of the Class I KNOX homeobox gene family and is thought to play an important role in meristem development and leaf morphogenesis. Recent studies have demonstrated that KNAT1/BP regulates the architecture of the inflorescence by affecting pedicle development in Arabidopsis thaliana. Herein, we report the characterization of an Arabidopsis T-DNA insertion mutant that shares considerable phenotypic similarity to the previously identified mutant brevipedicle (bp). Molecular and genetic analyses showed that the mutant is allelic to bp and that the T-DNA is located within the first helix of the KNAT1 homeodomain (HD). Although the mutation causes a typical abnormality of short pedicles, propendent siliques, and semidwarfism, no obvious defects are observed in the vegetative stage. A study on cell morphology showed that asymmetrical division and inhibition of cell elongation contribute to the downward-pointing and shorter pedicle phenotype. Loss of KNAT/BP function results in the abnormal development of abscission zones. Microarray analysis of gene expression profiling suggests that KNAT1/BP may regulate abscission zone development through hormone signaling and hormone metabolism in Arabidopsis.; Biochemistry & Molecular Biology; Plant Sciences; SCI(E); CPCI-S(ISTP); 15
语种	英语
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/252929]
专题	生命科学学院
推荐引用方式 GB/T 7714	Wang, XQ,Xu, WH,Ma, LG,et al. Requirement of KNAT1/BP for the development of abscission zones in Arabidopsis thaliana. 2006-01-01.

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