奥杜藻属Audouinella系统分类研究进展

Progress in Systematics of Audouinella Bory

奥杜藻属(Audouinella)是淡水红藻中一个比较重要的类群,主要特征是:藻体为单列细胞组成的分枝丝体,细胞具数个周生盘状色素体,有时边缘浅裂,无蛋白核,可产生单孢子囊进行无性生殖,具有有性生殖过程。已知的种类全部为淡水产。中国淡水奥杜藻属已报道的种类有10种2变种。利用分子生物学手段对我国淡水奥杜藻属进行深入系统的、多特征的分类研究,将是今后研究的主要发展方向。

Audouinella Bory is quite a important group of freshwater red algae. Currently, the main features of the genus are considered：the thalli are branched and consisted of single row of cells ; a few chromatophores are discoid and parietal, sometimes margin lobed, pyrenoid absent ; asexual reproduction is by monospores and sexual reproduction is occured. All of known species live in freshwater. The genus is belonged to Acrochaetiaceae, Acrochaetiales. The complete life cycle of AudouineUa includes three homomorphous plants, isogamete, tetrasporophyte and filament of asexual reproduction by monospores. Ten species and two varieties of freshwater Audouinella Bory are recorded in China. But the sexual reproduction has not been described. It will be focused on the systematics based on multi-characteristics for freshwater Audouinella Bory using moleeular biological data. Furthermore, the phylogenetics will be researched and the molecular phylogenetic tree will be constructed about Audouinella Bory in China.