THE ULTRASTRUCTURE OF CARPOSPOROGENESIS IN THE MARINE HEMIPARASITIC RED ALGA ERYTHROCYSTIS SACCATA 1
THE ULTRASTRUCTURE OF CARPOSPOROGENESIS IN THE MARINE HEMIPARASITIC RED ALGA ERYTHROCYSTIS SACCATA 1
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海洋半寄生红藻 Erythrocystis Saccata 1 果孢发生的超微结构
DOI：
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发表时间：
1974
期刊：
影响因子：
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通讯作者：
J. West
中科院分区：
文献类型：
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作者：
P. Kugrens;J. West
描述了囊状红囊藻（Erythrocystis saccata）果孢子发生的超微结构。融合细胞和成分生细胞含有很少的细胞器，叶绿体处于前质体状态，成分生细胞之间的孔塞在发育早期溶解。果孢子的发育可分为3个阶段，第一阶段的特征是出现直形的网状体、纤维状囊泡和叶绿体内盘状类囊体的增加。在第二阶段，网质体呈现弯曲的轮廓，由内质网形成条纹状小泡。第三阶段开始于条纹囊泡的消失和具有核心的直轮廓的高尔基体分泌囊泡的出现。成熟的果孢子由许多核心小泡、纤维小泡和花状淀粉粒组成。单个壁层包围着每个果孢子，因为果孢子囊壁被结合到包围着孢子的粘液基质中。
The ultrastructure of carposporogenesis for Erythrocystis saccata is described. The fusion and gonimoblast cells contain few organelles, and chloroplasts are in a proplastid state, with pit plugs between gonimoblast cells dissolving early in development. Carpospore development may be separated into 3 stages, the first stage being characterized by the appearance of straight‐profiled dictyosomes, fibrous vesicles, and an increase of discoid thylakoids within the chloroplasts. During the second, stage the dictyosomes assume a curved profile and striped vesicles are formed by the endoplasmic reticulum. The third stage is initiated by the disappearance of striped vesicles and the appearance of straight‐profiled dictyosomes secreting vesicles with cores. Mature carpospores consist of many cored vesicles, fibrous vesicles, and floridean starch grains. A single wall layer surrounds each carpospore since the carposporangial wall becomes incorporated into a mucilaginous matrix surrounding the spores.