Activities of citrate synthase ( cs ) increased while those of aconitase ( aco ) decreased during the al stress . this might be the reason for the al - induced increase in citrate efflux 结果显示,介质中50 mol lal能显著提高根尖柠檬酸合酶( citratesynthase , cs )的活性,同时伴随着柠檬酸含量的升高。