Abstract
Plants have physiological mechanisms to adapt to the environmental stress induced by various climate changes, because they are non-motile organisms. Arabidopsis DREB1s and DREB2s are transcriptional factors that are involved in plant environmental stress response. Interestingly, accumulation of the Arabidopsis AtDREB2A is induced by both water-deficit stress and high-temperature stress, and this transcriptional factor activates expression of many genes that function in development of abiotic stress tolerance. However, little is known about DREB2 family encoded in the Solanaceae genome. As a result of data base search using DNA-binding domain as a query, we found tomato (Solanum lycopersicon) LeDREB2A (Acc. No. AF500011). Expression analysis of the LeDREB2A gene in vegetative growth stages under high-temperature or drought stress conditions revealed that the latter stress induces the expression of this gene. Further, stress inducible expressions of this gene in various developmental stages are analyzed.
