Role of Ubisch bodies secreted by tapetum in Ca^(2+) transprot  

作　　者：MENG Xianghong, WANG Jianbo & LI RongqianCollege of Life Sciences, Wuhan University, Wuhan 430072, China 

出　　处：《Chinese Science Bulletin》2000年第7期630-634,共5页

摘　　要：The distribution of Ca2+ in the anthers of wheat was observed using cytochemical method of potassium antimonite. At the later tetrad stage, Ubisch bodies carrying Ca2+ were observed on the inner surface of tapetum, in anther locule and on pollen surface. The Ubisch bodies contacted with pollen, and Ca began to accumulate on polien surface. At the uninucleate pollen stage, abundant Ubisch bodies were distributed in anther locule, and the amount of Ca2+ on pollen surface increased. At the mature pollen stage a large amount of Ca2+ ions were localized on the inner surface of tapetum, the surface of pollen and Ubisch bodies. in the pollen wall, Ca2+ precipitates arranged in radial lines. These results demonstrated that Ubisch bodies were involved in Ca2+ transport from anther wall to pollen surface at some developmental stages of anther.The distribution of Ca2+ in the anthers of wheat was observed using cytochemical method of potassium antimonite. At the later tetrad stage, Ubisch bodies carrying Ca2+ were observed on the inner surface of tapetum, in anther locule and on pollen surface. The Ubisch bodies contacted with pollen, and Ca began to accumulate on polien surface. At the uninucleate pollen stage, abundant Ubisch bodies were distributed in anther locule, and the amount of Ca2+ on pollen surface increased. At the mature pollen stage a large amount of Ca2+ ions were localized on the inner surface of tapetum, the surface of pollen and Ubisch bodies. in the pollen wall, Ca2+ precipitates arranged in radial lines. These results demonstrated that Ubisch bodies were involved in Ca2+ transport from anther wall to pollen surface at some developmental stages of anther.

关 键 词：wheat ANTHER Ubisch BODIES POLLEN Ca^2x 

分 类 号：Q241[生物学—细胞生物学]