Control of stomatal distribution on the Arabidopsis leaf surface
Control of stomatal distribution on the Arabidopsis leaf surface
复制标题
DOI：
10.1126/science.1069596
复制
发表时间：
2002-05-31
期刊：
影响因子：
56.9
通讯作者：
Sack, FD
中科院分区：
文献类型：
--
作者：
Nadeau, JA;Sack, FD
气孔调节气体交换，以特有的间距分布在叶表皮上。拟南芥的气孔是由细胞不对称分裂产生的。基因太多口(TMM)的突变通过随机化形成的不对称分裂平面和允许异位分裂来破坏模式。TMM编码一种富含亮氨酸重复序列的受体样蛋白，在增殖的原真皮后细胞中表达。TMM似乎在一个位置依赖的信号通路中发挥作用，该通路控制着图案分裂的平面以及气孔和表皮发育中干细胞更新和分化之间的平衡。
Stomata regulate gas exchange and are distributed across the leaf epidermis with characteristic spacing. Arabidopsis stomata are produced by asymmetric cell divisions. Mutations in the gene TOO MANY MOUTHS (TMM) disrupt patterning by randomizing the plane of formative asymmetric divisions and by permitting ectopic divisions. TMM encodes a leucine-rich repeat-containing receptor-like protein expressed in proliferative postprotodermal cells. TMM appears to function in a position-dependent signaling pathway that controls the plane of patterning divisions as well as the balance between stem cell renewal and differentiation in stomatal and epidermal development.