Fig. 2
Score plots of the principal component analysis displaying the metabolomic trajectory of the root (A 1 ) and shoot (A 2 ) of maize seedlings under no salinity stress (CK), neutral salt stress (SS), and alkaline salt stress (AS). Scores obtained by orthogonal partial least-squares discriminant analysis (PLS-DA) exhibiting the dependence of the effects of neutral salt stress on maize on salinity levels: CK vs. SS in roots (B 1 ) and shoots (B 2 ); CK vs. AS in (C 1 ) roots and shoots (C 2 )