GmLecRlk improves salt tolerance in soybean. (A) Phenotypic analysis of GmLecRlk-ox and WT soybean under 200 mM NaCl; (B) fresh weight in GmLecRlk-ox and WT soybean with 0 or 200 mM NaCl; (C) Fv/Fm rate in GmLecRlk-ox and WT soybean with 0 or 200 mM NaCl. (D,E,G) Pro, MDA, and H2O2 content in GmLecRlk-ox and WT soybean with 0 or 200 mM NaCl. (F) GmLecRlk-ox and WT soybean leaves were stained with NBT and DAB under 200 mM NaCl for 3 days. (H) CAT activity in GmLecRlk-ox and WT soybean with 0 or 200 mM NaCl. **, GmLecRlk-ox soybean showed a significant difference from the WT (p < 0.01). Error bars, s.e.m.