Fig. 6

Phenotypes and physiological parameters of Col-0, ZxNAC083 and ZxNAC035 overexpression transgenic plants under normal conditions and period drought stress. Two independent lines were analyzed for each transgenic. Representative images are shown. a, g Col-0, ZxNAC083 and ZxNAC035 overexpression transgenic plants under normal conditions. b, h Col-0, ZxNAC083 and ZxNAC035 overexpression transgenic plants under period drought stress (2-weeks water withheld, 1-week recovery). c, d, e, f Physiological parameters of Col-0 and ZxNAC083 overexpression transgenic lines under normal conditions and period drought stress. c Dry weight of stems, (d) relative water content, (e) chlorophyll content, and (f) net photosynthetic rate. i, j, k, l Physiological parameters of Col-0 and ZxNAC035 overexpression transgenic plants under normal conditions and period drought stress. i Dry weight of stems, (j) relative water content, (k) chlorophyll content, and (l) net photosynthetic rate. Data are mean ± SD of three replicates. c,i Asterisks, significant difference. p < 0.05 (t-test). (d, e, f, j, k, l) Asterisks, significant difference. p < 0.05 (Duncan’s test)