Plants were grown in soil under well-watered conditions at 22 ± 2 °C and 60–70% relative humidity under a 16/8-h light/dark cycle. The atabcg21 mutant was a T-DNA-tagged mutant obtained from the Arabidopsis Biological Resource Center (SAIL_786_G09). The atabcg22 mutant used in this study was reported previously as the atabcg22-2 (salk_113844) allele, and the srk2e and nced3 mutants have been described previously30.
Thermal images were captured using an infrared thermography device (T620; FLIR). Average temperatures were calculated by FLIR Tools. Water-loss experiments were performed using rosette leaves detached from 5-week-old plants, as described previously30.
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