Figure 4

Heat maps of significant changes in metabolites groups of four plant species (a) C. spinarum (b) B. brachycarpa (c) C. distans and (d) A. sitosa in response to water addition (P < 0.05). Each colored cell on the map corresponds to a normalized log response value of the metabolite levels, with samples in columns and metabolites in rows. Green and red colors indicate increased and decreased metabolite concentrations, respectively.