Abstract
As plants grow, cell division plays a key role in proper development and appropriate shape. Recent study of Kip-related proteins (KRPs), which are inhibitor of cyclin-dependent kinase (CDK), indicated that negative regulation of cell division plays an important role in plant morphogenesis. To investigate how KRPs affect leaf morphology, we have characterized transgenic Arabidopsis overexpressing KRP gene families. In this study, we have observed the common phenotype, for example, reduced sized leaves with serration and reduced fertility from transgenic plants of each type of KRPs overexpression. Interestingly, the phenotype of bifurcate leaves with serration was observed only in transgenic plants overexpressing Group III KRPs. In addition, rolling up and curvature phenotype of leaves was observed in transgenic plants overexpressing KRP6. Taken together, we will discuss about the roles of KRPs in the regulation of cell division in leaf morphogenesis from our results.
