Relationship between Leaf Sucrose and Starch Content and Their Degradative Enzymes Activities in Crop Plants Molecular and Functional Characterization of Sphingo-sine-1-Phosphate Lyase Homolog from Higher Plants Subcellular Localizations of AS1 and AS2 Suggest Their Common and Distinct Roles in Plant Development Homeodomain leucine-zipper proteins and their role in synchronizing growth and development with the environment Comparative Anatomy of Leaf Development in Polygonatum cyrtonema and P.anhuiense Leaf Development Responses of Trifolium repens to Climatic and Non-climatic Factors