Expressional Analysis of MaCAM in Banana Under Abiotic Stresses

In order to identify the function of calmodulin gene in banana,the expression levels of MaCAM in banana root under different abiotic stresses such as salt,low-temperature and drought were analyzed by real-time quantitative PCR.The expression of MaCAM first increased and then decreased with the stress time under the salt stress treatment.The expression level was the highest at 4 h under the salt treatment;MaCAM expression level gradually increased with decreasing temperature under low-temperature stress,when temperature was lowered to 5 ℃,the expression reached the maximum within the processing range;MaCAM expression level gradually increased with the increased stress level under drought stress,the expres-sion level was the highest under severe drought stress in the processing range.The results indicate that MaCAM is induced by abiotic stress and maybe involves in regulation of banana seedlings stress resistance.