Evolutionary Conservation of ABA Signaling for Stomatal Closure

Shengguan Cai(Western Sydney University), Guang Chen(Australian National University), Yuanyuan Wang(Australian National University), Yuqing Huang(Australian National University), D. Blaine Marchant(Australian National University), Yizhou Wang(Australian National University), Qian Yang(Australian National University), Fei Dai(Australian National University), Adrian Hills(Australian National University), Peter J. Franks(Australian National University), Eviatar Nevo(Australian National University), Douglas E. Soltis(Australian National University), Pamela S. Soltis(Australian National University), Emily B. Sessa(Australian National University), Paul G. Wolf(Australian National University), Dawei Xue(Australian National University), Guoping Zhang(Australian National University), Barry J. Pogson(Australian National University), Michael R. Blatt(Australian National University), Zhong‐Hua Chen(Zhejiang International Studies University)
PLANT PHYSIOLOGY
February 23, 2017
10.1104/pp.16.01848
Cited by 238Open Access
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Abstract

ABA-driven stomatal regulation reportedly evolved after the divergence of ferns, during the early evolution of seed plants approximately 360 Mya. This hypothesis is based on the observation that the stomata of certain fern species are unresponsive to ABA, but exhibit passive hydraulic control. However, ABA-induced stomatal closure was detected in some mosses and lycophytes. Here, we observed that a number of ABA signaling and membrane transporter protein families diversified over the evolutionary history of land plants. The aquatic ferns Azolla filiculoides and Salvinia cucullata have representatives of 23 families of proteins orthologous to those of Arabidopsis thaliana and all other land plant species studied.

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