Fig. 4From: Acclimation with humic acids enhances maize and tomato tolerance to salinityRelative expression of the overly salt-sensitive gene (ZmSOS3) quantified by RT-qPCR in roots of maize seedlings treated or not (control) with 4 mM C of humic acids (HA) 4 and 60 mM NaCl. The means (n = 4) was followed by the standard deviationBack to article page