The full length coding domain sequence of JcDREB2 (after removal of the termination codon) was amplified by RT-PCR from total RNA extracted from physic nut leaves using the primers given in Supplementary Table S1. The target sequence was cloned into the pSAT6-eYFP-N1 vector to construct the pSAT6-JcDREB2-eYFP fusion expression vector. The 35S::JcDREB2-YFP construct and a control (35S::YFP) plasmid were introduced into Arabidopsis protoplasts by the polyethylene glycol (PEG) mediated method. Next the transformed cells were incubated in the light for 16 h at 25°C. YFP fluorescence signal was detected by laser scanning confocal microscopy. Arabidopsis protoplasts was prepared according to Axelos (1992).
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