Morphology and development of bulliform cells in Arundo formosana Hack.

Abstract

Bulliform cells of Arundo formosana Hack. occur intercostally in adaxidal epidermis of leaf blade. They are the most vaculoated among all cell types in epidermis. They contain very few organelles. Bulliform cell initiates in protoderm that is located in the sinus between two procambia. The site and initiation sequence of bulliform cells are closely related with the formation of procabium. The later enlargement of bulliform cell occurs synchronously, and is limited by the presence of subepidermal sclerenchyma neighboring it. The enlargement of bulliform cells would play an important role in expansion of the developing blade.