Fig.4From: Overexpression VaPYL9 improves cold tolerance in tomato by regulating key genes in hormone signaling and antioxidant enzymeThe changing of antioxidant enzyme activities and endogenous hormones in WT and OE plants. Six-weekend tomatoes were used as materials to detect enzyme activities and endogenous hormones. (a). POD, SOD, and CAT enzymes activities were determined in WT and OE plants under 4 ℃ for 0 h, 6 h, 12 h, 24 h, 48 h. b. (b). The content of IAA and ABA was determined, and ABA/IAA was calculated in WT and OE plants under 4 ℃ for 0 h, 6 h, 12 h, 24 h, 48 h. The bar represents the value of standard error (p < 0.01). Lowercase letters represent the significance level. Means and SE values were calculated from at least three independent experimentsBack to article page