Abstract
The development of the leaf in the monocotyledon progresses almost in one dimension, because cell division is restricted in the base part of leaves. Therefore, it is easy to follow the process of vascular development in the leaf. In order to elucidate the vascular formation system in the monocotyledon, we used rice as a model plant.
We investigated the pattern formation and internal structure of the vascular tissue with the cleared leaf blades and the continuous sections in the basement of the rice plant. From the precise observation, we could divide the vascular development into several stages. Based on this information, we screened mutants defective in vascular formation. As the result, we succeeded in identifying 11 lines of vein pattern mutants and a line of vascular structural mutant. From these results, we will discuss the mechanism of vascular formation in rice leaves.
