Exogenous 5-aminolevulinic acid (ALA) positively regulates plants chlorophyll synthesis and protects them against environmental stresses， although the protection mechanism is not fully clear. Here， we explored the effects of ALA on chlorophyll synthesis in tomato plants， which are sensitive to low temperature. We also examined the roles of the glutathione S-transferase (GSTU43) gene， which is involved in ALA-induced tolerance to oxidation stress and regulation of chlorophyll synthesis under low temperature.
Exogenous 5-aminolevulinic acid (ALA) positively regulates plants chlorophyll synthesis and protects them against environmental stresses， although the protection mechanism is not fully clear. Here， we explored the effects of ALA on chlorophyll synthesis in tomato plants， which are sensitive to low temperature. We also examined the roles of the glutathione S-transferase (GSTU43) gene， which is involved in ALA-induced tolerance to oxidation stress and regulation of chlorophyll synthesis under low temperature.
