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CO2 Sensing and CO2 peculation of Stomatal Conductance: Advances and Open Questions

机译:气孔导度的CO2传感和CO2排泄:进展和未解决的问题

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摘要

Guard cells form epidermal stomatal gas-exchange valves in plants and regulate the aperture of stomatal pores in response to changes in the carbon dioxide (CO2) concentration ((CO2]) in leaves. Moreover, the development of stomata is repressed by elevated CO2 in diverse plant species. Evidence suggests that plants can sense [CO2] changes via guard cells and via mesophyll tissues in mediating stomata! movements. We review new discoveries and open questions on mechanisms mediating CO2-regulated stomatal movements and CO2 modulation of stomatal development, which together function in the CO2 regulation of stomatal conductance and gas exchange in plants. Research in this area is timely in light of the necessity of selecting and developing crop cultivars that perform better in a shifting climate.
机译:保卫细胞形成植物中的表皮气孔气体交换阀,并响应叶片中二氧化碳(CO2)浓度((CO2])的变化来调节气孔的孔径,此外,CO2浓度升高会抑制气孔的发育。有证据表明植物可以通过保卫细胞和叶肉组织在介导气孔运动中感知[CO2]的变化,我们对介导CO2调节气孔运动和CO2调节气孔发育的机制进行了新的发现并提出了疑问。两者在植物气孔导度和气体交换的CO2调节中起着重要作用,鉴于选择和开发在气候变化中表现更好的作物品种的必要性,该领域的研究是及时的。

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