The results obtained in our laboratory in the past decade years showed, apoplast calmodulin in plant kingdom may regulate a lot of growth and development process of plant, such as accelerating the proliferation of Angelica dahurica suspension cells and the proplast cell regeneration,startup the pollen germination of many plants' pollen and accelerating the elongation of the pollen tube,stimulating the redox of corn root' s cell, inducing the expression of light independent rbsS gene, and partici...