摘要
大型海藻细胞超微结构的研究,对于海藻的基础理论及应用研究具有十分重要的作用,本文比较系统地对宽礁膜游孢子、配子体、配子、合子和游孢子囊进行了电镜观察。研究结果表明,淀粉粒在各阶段细胞中的数量变化、初期合子外的胶质膜对合子的固着作用、游孢子囊的厚壁与其对不良环境的抵抗能力等都表明各阶段形体的超微结构与其生理功能是一致的。蛋白核的超微结构特征可作为礁膜属种类的一个分类依据,它是对以形态、生活史等为主要分类依据的有力补充。宽礁膜各阶段细胞内均具1个较大的蛋白核,有2条(游孢子囊时有时为3条)类囊体片层穿过蛋白核髓部,外有3～4枚或更多的淀粉鞘包被,籍此可将宽礁膜与其它礁膜属种类相区别。
<Abstrcat>Study on the ultrastructure of macro-algae is very important part in the basic and application study of algae. The ultrastructure of the zoospore, gamete, zygocyte, zoosporangia of M. latissimum was studied in this paper. The ultrastructure of Monstroma's cells closely correlated with their physiology function in the life-history. For example, the number of starch grains was changing in different life-history stage, the adherent function of mucilage occurred in early stage of zygote, the thick wall of sporangium was useful to resist bad environment. In the classification of the Monostroma complex, the ultrastructure and number of pyrenoids in the chloroplast were also taken as one of the taxonomic characteristics which are important supplement to conventional life-history and other morphology distinguishing characteristics. In every stage of life-history of M. latissimum there was one pyrenoid in each cell, the pyrenoid matrix was traversed by 2 or rarely 3 curved bounds of thylakoids. There were 3-4 or more pieces of starch plates covered the surface of the pyrenoid matrix. According to this pyrenoid ultrastructural characteristics, M. latissimum could be distinguished from other species of Monostroma.
出处
《上海水产大学学报》
CSCD
北大核心
2005年第2期116-121,共6页
Journal of Shanghai Fisheries University
基金
浙江省科学技术厅科技兴海专项基金(项目编号:2002C23014)
关键词
宽礁膜
超微结构
生活史
淀粉粒
蛋白核
Monostroma latissimum
ultrastructure
life-history
starch grain
pyrenoid
