Stomatal development: new signals and fate determinants.

Stomatal development: new signals and fate determinants.
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DOI:
10.1016/j.pbi.2008.10.006
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发表时间:
2009-02
影响因子:
9.5
通讯作者:
Nadeau, Jeanette A.
Nadeau, Jeanette A.
中科院分区:
生物学2区
文献类型:
--
作者:
Nadeau, Jeanette A.

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气孔和铺面细胞是由干细胞谱系内的一系列不对称分裂和渐进命运转变产生的。在拟南芥中,这一过程受到调节,使得新的谱系可以插入先前分化的细胞之间,同时保持气孔间距。小肽表皮图案形成因子1可能是气孔前体细胞分泌的一种位置信号,调节附近细胞的行为。信号接收细胞可能使用TOO MANY MOUTHS和ERECTA家族受体和MAPK途径来调节新谱系的起始,促进不对称分裂,并控制间隔分裂的平面。细胞命运的转变是由bHLH,MYB和MADS盒转录因子控制的,并且有证据表明miRNA调控。这些结果提供了洞察气孔细胞转换的积极和消极的影响,并建议潜在的环境调节点。
Stomata and pavement cells are produced by a series of asymmetric divisions and progressive fate transitions within a stem cell lineage. In Arabidopsis, this process is regulated so that new lineages can be inserted between previously differentiated cells while maintaining stomatal spacing. The small peptide EPIDERMAL PATTERNING FACTOR 1 may be a positional signal secreted by stomatal precursors to modulate behavior of nearby cells. Signal-receiving cells may use TOO MANY MOUTHS and ERECTA family receptors and a MAPK pathway to regulate initiation of new lineages, promote asymmetric division, and control the plane of spacing divisions. Cell fate transitions are controlled by bHLH, MYB and MADS-box transcription factors, and there is evidence of miRNA regulation. These results provide insight into positive and negative influences on stomatal cell transitions and suggest points of potential environmental regulation.
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