On the origins of osmotically driven stomatal movements.

On the origins of osmotically driven stomatal movements.
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渗透驱动气孔运动的起源

DOI:
10.1111/nph.15593
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发表时间:
2019
期刊:
The New phytologist
影响因子:
--
通讯作者:
Hedrich R
Hedrich R
中科院分区:
--
文献类型:
--
作者:
Sussmilch FC;Roelfsema MRG;Hedrich R

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内容 摘要84 I.导言. 84 二.气孔形态与生物力学85 三.气孔功能86 四.保卫细胞离子通道的演变87 五、结论. 88 致谢88 作者贡献88 参考文献88概述气孔的孔径可以通过保卫细胞膨压的变化来调节,这有助于植物在干燥环境中的成功。我们探讨它们的进化起源,考虑到最近的研究结果,从brabrites。与维管植物气孔关闭以防止水分流失不同,芽生植物气孔被锁定打开以促进孢子干燥。我们发现,家庭的离子通道,已知控制气孔运动的被子植物,是古老的和现有的陆地植物。然而,虽然被子植物保卫细胞表达特定的离子通道基因,没有出现在气孔轴承苔藓组织特异性表达。考虑到气孔功能从促进到防止水分流失的进化转变,我们假设离子通道在芽枝分化后采用了保卫细胞特异性功能。
Contents Summary 84 I. Introduction 84 II. Stomatal form and biomechanics 85 III. Stomatal function 86 IV. Evolution of guard cell ion channels 87 V. Conclusions 88 Acknowledgements 88 Author contributions 88 References 88SummaryStomatal pores with apertures that can be adjusted by changes in guard cell turgor have facilitated plant success in dry environments. We explore their evolutionary origins, considering recent findings from bryophytes. Unlike vascular plant stomata, which close to prevent water loss, bryophyte stomata become locked open to promote spore desiccation. We find that the families of ion channels, known to control stomatal movements in angiosperms, are ancient and represented across extant land plants. However, although angiosperm guard cells express specific ion channel genes, none appear specifically expressed in stomata‐bearing moss tissues. Given the evolutionary shift in stomatal function from promotion to prevention of water loss, we postulate that ion channels adopted guard cell‐specific functions after the divergence of bryophytes.
英国苔藓植物气孔的发生、结构和功能
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发表时间: 1957
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