已收录 272983 条政策
 政策提纲
  • 暂无提纲
FINE STRUCTURE OF SPORES IN A THERMOPHILIC ACTINOMYCETE MICROMONOSPORA VULGARIS
[摘要] Some general structural features of dormant and germinating spores of a thermophilic actinomycete, Micromonospora vulgaris, are described. The structure of these spores differs considerably from that in other actinomycetes so far reported.The mature dormant spore of Micromonospora vulgaris is covered with multilayered integuments consisting of outer spore coat, intermediate spore coat, inner multilayered coat and cortex-like coat. The spore core is separated from the cortex-like coat by a boundary region. A net-like texture is sometimes visible in the spore core.On germination the spore core swells. In the boundary region a plasma membrane and cell wall of the emerging cell seem to be synthesized. Ribosome granules of cytoplasm, extensive intracytoplasmic membrane systems, nuclear region and an unidentified fine granular structures appear to be visible in the germinating cell. Spore integuments show signs of degradation in the process of germination, this process being markedly in progress at the stage of emergence.
[发布日期]  [发布机构] 
[效力级别]  [学科分类] 微生物学和免疫学
[关键词]  [时效性] 
   浏览次数:3      统一登录查看全文      激活码登录查看全文