Cuticle permeability is an important parameter for the trade-off strategy between drought tolerance and CO2 uptake in land plants
Cuticle permeability is an important parameter for the trade-off strategy between drought tolerance and CO2 uptake in land plants
复制标题
角质层渗透性是陆地植物耐旱性和二氧化碳吸收之间权衡策略的重要参数
DOI：
10.1080/15592324.2021.1908692
复制
发表时间：
2021
影响因子：
2.9
通讯作者：
Iba Koh
中科院分区：
文献类型：
--
作者：
Monda Keina;Mabuchi Atsushi;Negi Juntaro;Iba Koh
为了防止水分流失，陆地植物已经发展了角质层;然而，角质层强烈限制光合作用的CO2吸收。控制这种权衡关系是植物生存的重要策略，但角质层的变化在多大程度上影响这种关系还不清楚。为了评估这一点，我们测量了CO2同化率和蒸腾速率一起在拟南芥amutansexcessive蒸腾1（extra 1），表现出显着的蒸发水分损失，由于增加角质层渗透性引起的一个新的等位基因乙酰辅酶A羧化酶1（ACC 1）。在高湿（85%）条件下，extra 1突变体表现出较高的CO2同化速率，但其水分利用效率比slac 1（低阴离子通道相关1）突变体降低了1/3，后者气孔持续开放。结果表明，在extra 1中，角质层透性增加对蒸腾速率的影响大于CO2同化速率，但对CO2同化速率的影响大于slac 1中气孔开放的影响，表明角质层透性是陆地植物耐旱性与CO2吸收之间权衡关系的重要参数。
To protect against water loss, land plants have developed the cuticle; however, the cuticle strongly restricts CO2uptake for photosynthesis. Controlling this trade-off relationship is an important strategy for plant survival, but the extent to which the changes in cuticle affects this relationship is not clear. To evaluate this, we measured CO2assimilation rate and transpiration rate together in theArabidopsis thalianamutantexcessive transpiration1(extra1), which exhibited marked evaporative water loss due to an increased cuticle permeability caused by a new allele ofACETYL-COA CARBOXYLASE 1(ACC1). Under high humidity (85%) conditions, theextra1mutant exhibited higher CO2assimilation rate in exchange for decreasing water use efficiency by one-third compared to theslow anion channel-associated 1 (slac1) mutant, whose stomata are continuously open. Our results indicate that the increased cuticle permeability inextra1affects transpiration rate more than CO2assimilation rate, but the effect on CO2assimilation rate is larger than the effect of open stomata inslac1, suggesting that the cuticle permeability is an important parameter for the trade-off relationship between drought tolerance and CO2uptake in land plants.
影响因子：
6.9
作者：
Boyer JS
通讯作者：
Boyer JS
植物生理学
DOI：
10.1007/978-3-642-97570-7
发表时间：
1995
期刊：
--
影响因子：
--
作者：
Professor Dr. Hans Mohr;Professor Dr. Peter Schopfer
通讯作者：
Professor Dr. Peter Schopfer
影响因子：
64.8
作者：
Negi, Juntaro;Matsuda, Osamu;Iba, Koh
通讯作者：
Iba, Koh