[The features of distribution of polysaccharide and lipid in the developing anther of Lycium barbarum L].
Polysaccharide and lipid in the anthers of Lycium barbarurn L. at different stages were examined with cytochemical techniques. At the stage of sporogenous cell, many starches have been storied in parenchyma around vascular bundle, epidermis and endothecium cells but no starches in sporogenous cells, tapetal and middle layer cells. At the stage of tetrad, there were many starches still in epidermis and endothecium, however tapetal cells began to accumulate lipid drops, suggesting that tapetal cells transformed polysaccharides into lipid. Tapetum degenerated at the late stage of microspore and the lipid drops moved into locule. During microspore development neither starches nor lipid drops were accumulated in the cell. After the division of microspore, some lipids drops appeared in 2-cellular pollen, and then some starches also appeared in the pollen. Two days before anthesis, there were many lipid drops and starches located in nearly mature pollen grains, suggesting that pollen of Lycium barbarurn L. has a function of transforming lipid into polysaccharide. The temporal and spatial features of polysaccharide and lipid material accumulated and distributed in anther during its development reflect the transformation of physiological function of the cells consisting of anther. This research will help us to understand the mechanism of anther development.
Xu
Qing
Q
School of Life Sciences, Xiamen University.
Wang
Xian Qin
XQ
Tian
Hui Qiao
HQ
D035264:Flowers / Q000166:cytology / Q000254:growth & development / Q000378:metabolism*; D005718:Gametogenesis; D050356:Lipid Metabolism; D032305:Lycium / Q000166:cytology / Q000254:growth & development / Q000378:metabolism*; D011058:Pollen / Q000166:cytology / Q000254:growth & development / Q000378:metabolism*; D011134:Polysaccharides / Q000378:metabolism*
D011134:Polysaccharides