MpWIP regulates air pore complex development in the liverwort Marchantia polymorpha.
MpWIP regulates air pore complex development in the liverwort Marchantia polymorpha.
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DOI：
10.1242/dev.144287
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发表时间：
2017-04-15
期刊：
影响因子：
--
通讯作者：
Dolan L
中科院分区：
文献类型：
--
作者：
Jones VA;Dolan L
植物对陆地的殖民伴随着复杂的组织和多细胞结构的进化，这些结构包括不同类型的细胞，以适应陆地环境的形态。在这里，我们证明了早期分叉的陆地植物地钱草中的单个WIP蛋白是多细胞气体交换结构：气孔复合体发育所必需的。这个由16个细胞组成的桶形结构围绕着表皮细胞之间的开口，该开口促进了含有植物内部光合作用细胞的房间和外部空气之间的气体交换。MpWIP在发育中的气孔复合体细胞中表达，在MpWIP功能降低的植物中，该复合体的形态发生存在缺陷。WIP蛋白在多态拟南芥和开花植物拟南芥中控制不同多细胞结构中的作用表明，这些蛋白控制着陆地植物共同祖先中多细胞结构的发育。我们假设，WIP基因随后被增选来控制在陆地植物多样化期间进化的新的多细胞结构的形态发生。MpWIP基因控制着早期分叉的陆地植物地钱草中气孔复合体的发育--一种增加二氧化碳吸收的多细胞结构。
The colonisation of the land by plants was accompanied by the evolution of complex tissues and multicellular structures comprising different cell types as morphological adaptations to the terrestrial environment. Here, we show that the single WIP protein in the early-diverging land plant Marchantia polymorpha L. is required for the development of the multicellular gas exchange structure: the air pore complex. This 16-cell barrel-shaped structure surrounds an opening between epidermal cells that facilitates the exchange of gases between the chamber containing the photosynthetic cells inside the plant and the air outside. MpWIP is expressed in cells of the developing air pore complex and the morphogenesis of the complex is defective in plants with reduced MpWIP function. The role of WIP proteins in the control of different multicellular structures in M. polymorpha and the flowering plant Arabidopsis thaliana suggests that these proteins controlled the development of multicellular structures in the common ancestor of land plants. We hypothesise that WIP genes were subsequently co-opted in the control of morphogenesis of novel multicellular structures that evolved during the diversification of land plants. The MpWIP gene controls the development of the air pore complex – a multicellular structure that increases CO2 uptake – in the early-diverging land plant Marchantia polymorpha.