植物根尖分生组织干细胞调控模式

doi:10.3969/j.jssn.1000-2006.2012.04.027

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南京林业大学学报（自然科学版） ›› 2012, Vol. 36 ›› Issue (04): 127-132.doi: 10.3969/j.jssn.1000-2006.2012.04.027

植物根尖分生组织干细胞调控模式

陈金慧,王鹏凯,张艳娟,施季森^*

南京林业大学,林木遗传与生物技术省部共建教育部重点实验室,江苏南京 210037

出版日期:2012-07-07 发布日期:2012-07-07
基金资助:
收稿日期:2012-02-14 修回日期:2012-05-07 基金项目:国家林业局“948”项目(2009-4-24); 国家自然科学基金项目(30901156, 31170619); 江苏省科技攀登计划项目 (BK2008051) 第一作者:陈金慧,副教授,博士。*通信作者:施季森,教授。E-mail: jshi@njfu.edu.cn。引文格式:陈金慧,王鹏凯,张艳娟,等. 植物根尖分生组织干细胞调控模式[J]. 南京林业大学学报:自然科学版,2012,36 (4):127-132.

The regulatory pattern of stem cell in root apical meristem

CHEN Jinhui, WANG Pengkai, ZHANG Yanjuan, SHI Jisen^*

Key Laboratory of Forest Genetics and Biotechnology Ministry of Education, Nanjing Forestry University, Nanjing 210037, China

Online:2012-07-07 Published:2012-07-07

摘要/Abstract

摘要： 静止中心(QC)形成和干细胞区特化是植物根尖分生组织确立的标志。静止中心位于根尖分生组织中心,干细胞围绕在静止中心细胞周围。依赖于生长素的PLT途径和不依赖于生长素的SCR/SHR途径共同发挥维持静止中心细胞稳定的作用。静止中心和干细胞区的柱干细胞之间存在类似于WUS/CLV3的WOX5/ACR4/CLE40的反馈抑制调节途径,该调节途径维持着静止中心细胞和柱干细胞之间的平衡。静止中心和其他类型干细胞之间也可能存在类似的反馈抑制调节途径。生长素、细胞分裂素、赤霉素等植物激素信号在根干细胞功能发挥方面也起到重要作用,与各种基因一起组成根分生组织干细胞调控网络。

Abstract: The root apical meristem establishing mark is the formation of quiescent center(QC)and the specialization of stem cell in the plant. There are four quiescent center cells in the center of root apical meristem with stem cells around them. Both auxin-dependent PLT pathway and auxin-independent SCR/SHR pathway together play an important role in the stabilization of quiescent center. There is a WOX5/ACR4/CLE40 feedback regulation between quiescent center cells and columella stem cells that is similar to the WUS/CLV3 in the stem apical meristem. The balance between quiescent center cells and columella stem cells is maintained by the WOX5/ACR4/CLE40 feedback pathway. There may be some similar pathway between other types of stem cells and quiescent center cells. The signal of auxin, cytokinin, gibberellin and other phytohormone also play an important role in the root apical meristem. These signals and some kinds of gene constitute regulation networks that regulate the root meristem apical stem cell niche.

中图分类号:

Q948

陈金慧,王鹏凯,张艳娟,等. 植物根尖分生组织干细胞调控模式[J]. 南京林业大学学报（自然科学版）, 2012, 36(04): 127-132.

CHEN Jinhui, WANG Pengkai, ZHANG Yanjuan, SHI Jisen. The regulatory pattern of stem cell in root apical meristem[J].Journal of Nanjing Forestry University (Natural Science Edition), 2012, 36(04): 127-132.DOI: 10.3969/j.jssn.1000-2006.2012.04.027.

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植物根尖分生组织干细胞调控模式

The regulatory pattern of stem cell in root apical meristem

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