动态表达揭示了拟南芥腋芽分生组织形成过程中WUS和CLV3的两步模式形成。
Dynamic expression reveals a two-step patterning of WUS and CLV3 during axillary shoot meristem formation in Arabidopsis.
作者信息
Xin Wei, Wang Zhicai, Liang Yan, Wang Yonghong, Hu Yuxin
机构信息
Key Laboratory of Plant Molecular Physiology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China.
Key Laboratory of Plant Molecular Physiology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; University of Chinese Academy of Sciences, Beijing 100049, China.
出版信息
J Plant Physiol. 2017 Jul;214:1-6. doi: 10.1016/j.jplph.2017.03.017. Epub 2017 Mar 28.
Seed plants have a remarkable capability to produce axillary meristems (AM) in the leaf axils, however, the dynamic establishment of a stem cell niche in AM is largely uncharacterized. We comprehensively examined the dynamic patterning of WUSCHEL (WUS) and CLAVATA3 (CLV3), the two key marker genes defining the shoot stem cell niches, during AM formation in Arabidopsis, and we found that a two-step patterning of WUS and CLV3 occurred during AM stem cell niche establishment. Our further work on the wus and clv3 mutants implicates that such two-step patterning is likely critical for the maintenance of AM progenitor cells and the specification of AM stem cell niche. These data provide a cytological frame for how a stem cell niche is established during AM formation.
种子植物具有在叶腋处产生腋生分生组织（AM）的显著能力，然而，AM中干细胞龛的动态建立在很大程度上尚未得到充分描述。我们全面研究了拟南芥AM形成过程中，定义茎尖干细胞龛的两个关键标记基因WUSCHEL（WUS）和CLAVATA3（CLV3）的动态模式，并且我们发现WUS和CLV3在AM干细胞龛建立过程中发生了两步模式形成。我们对wus和clv3突变体的进一步研究表明，这种两步模式形成可能对于AM祖细胞的维持和AM干细胞龛的特化至关重要。这些数据为AM形成过程中干细胞龛如何建立提供了一个细胞学框架。
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