Vesicle formation and cellulose degradation in Bacteroides succinogenes cultures: ultrastructural aspects
Vesicle formation and cellulose degradation in Bacteroides succinogenes cultures: ultrastructural aspects
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产琥珀酸拟杆菌培养物中的囊泡形成和纤维素降解：超微结构方面
DOI：
10.1007/bf00425364
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发表时间：
1987
影响因子：
2.8
通讯作者：
B. Gaillard
中科院分区：
文献类型：
--
作者：
G. Gaudet;B. Gaillard
在滤纸上生长的三天大的产琥珀酸拟杆菌培养物中，没有观察到细胞分裂。当在纤维素基质上生长时，细菌表现出聚集在细胞壁袋内的囊泡。在两天后的滤纸培养物中，细胞紧密粘附在基质上。其中20%到30%的人正在分裂。大约25%的细菌有细胞壁袋，但没有囊泡。无论它们是否粘附在纤维素基质上，也无论细菌的年龄如何，储存多糖都以致密颗粒的形式存在于细胞质中。看来囊泡对于纤维素降解并不是必需的，而是细胞老化的标志。
In 3-day-old cultures ofBacteroides succinogenesgrown on filter paper, no cell division was observed. When grown on cellulosic substrate, bacteria exhibited vesicles clustered within cell wall pockets. In 2 day-old filter paper cultures, cells adhered tightly to the substrate. Twenty to 30% of them were dividing. There were cell wall pockets in about 25% of the bacteria, but no vesicles. Whether they adhered to the cellulosic substrate or not, and irrespective of the age of the bacteria, storage polysaccharides were found in the form of dense granules in the cytoplasm. It would appear that vesicles are not essential for cellulose degradation, but are rather a sign of ageing of the cells.