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58问答库 > l型细菌的生长繁殖和代谢与普通细菌有何不同

l型细菌的生长繁殖和代谢与普通细菌有何不同

2025-03-29 11:57:24

推荐回答（1个）

回答（1）：

（1）细胞壁缺损此型细菌虽然胞壁缺如或残缺不全但是只要其胞浆完整无损在高渗环境中依然具有生命力可生长繁殖（2）基本形态高度多形性可表现为球状杆状链状及丝状形且大小不一菌落微小直径只lima左右在琼脂培养基上进而细胞壁便遭破坏菌落内陷与普通的菌落外凸不同在低倍显微镜下菌落呈油煎蛋样在高倍镜下菌落边缘为大形菌比亲本菌株要大中心为小形菌
生物学特性
（1）嗜高渗性只有在高渗环境中才能生长在普通的培养基上不生长由于已经失去了坚固的菌壁只剩下一层胞浆膜故在非高渗的环境中菌体就会迅速地溶解而死亡如L型金葡菌在蒸馏水中3min就会裂解 2h后消失在0.1%—0.2%
的录化钠溶液中 15min后细菌减少90% 而在2%～15%的录化钠溶液中菌体则无变化

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