文献类型：期刊文献

英文题名：Stomatal traits, gas exchange parameters and their relationships across C3 species: implications for plant evolution

作者：Tang, Xinglin[1] Huang, Wenchao[1] Ye, Xuemin[1] Xiao, Bin[2] Ding, Ying[2] Liu, Linqi[1] Yao, Jiabao[2]

第一作者：Tang, Xinglin

通信作者：Yao, JB[1]

机构：[1]Jiangxi Acad Forestry, Jiangxi Nanchang Urban Ecosyst Res Stn, Nanchang 330032, Peoples R China;[2]Chinese Acad Forestry, Expt Ctr Subtrop Forestry, Fenyi 336600, Peoples R China

年份：2025

卷号：48

期号：1

外文期刊名：BRAZILIAN JOURNAL OF BOTANY

收录：;Scopus(收录号：2-s2.0-105001359854);WOS:【SCI-EXPANDED(收录号:WOS:001455188200001)】；

基金：This work was supported by the Basic Research Fund of Chinese Academy of Forestry (CAFYBB2020ZB002-3) and the Youth Talent Training Program of Jiangxi Academy of Forestry (2023520803).

语种：英文

外文关键词：Photosynthesis; Plant evolution; Plant form; Stomatal conductance; Stomatal density

摘要：The CO2 and water vapor exchange of leaves is regulated by stomata. To date, stomatal traits and gas exchange parameters during plant evolution and domestication remain unclear. Here, we created a database including 337 observations of stomatal traits and gas exchange parameters in C-3 species, ranging from ferns to angiosperms. The results showed that the light-saturated photosynthetic rate (A(sat)) dramatically increased from ferns and gymnosperms to non-crop angiosperms and further increased to crops. The improvement of A(sat) along phylogeny was related to the increments of mesophyll conductance, which was mainly regulated by stomatal anatomy (stomatal traits). In different groups of angiosperms, woody plants had lower A(sat) and stomatal conductance (g(s)) and larger stomatal size (SS) than herbs. A(sat) in deciduous angiosperm trees was significantly higher than that in evergreen angiosperm trees. The stomatal density (SD), stomatal pore index (SPI), A(sat) and g(s) in annual herbs were higher than those in perennial herbs. The improvement of A(sat) and g(s) in crops was mainly related to the increments of SD. Our results suggested that the improvement in photosynthesis of plants during plant evolution and domestication is related to the increase in SD and to the decrease in SS.