放线菌孢子丝类型共享精品课件

放线菌孢子丝类型： 二级轮生 一级轮生 丛生 松螺旋紧螺旋 钩状 单轮生 螺旋状 放线菌孢子丝的显微图片: Coiled aerial hyphae 三、放线菌的繁殖方式 孢子形态及其特点 四、放线菌的生活史 五、放线菌的菌落形态 质质地: 致密、干燥、多皱皱、小 而不蔓延、不挑起，表面有 放射状沟纹纹。 形状：随菌种不同可有两类类 ： (1)产产生大量分枝状菌丝丝的菌 种： 如Strptomyces)形成与培 养基结结合较紧较紧 的 菌落，不易 挑起或整个挑起。 (2)不产产生大量菌丝丝的菌种： 如Nocardia形成的菌落呈粉 质质，挑之易碎 链霉菌属(Streptomyces) 共约1000多种。具有发育良好的菌丝体，菌丝体有基内 菌丝、气生菌丝、和孢子丝之分；孢子丝和孢子的形态因种 而异。抗生素主要由放线菌产生，而其中90%由链霉菌产生。 诺卡氏菌属（Nocardia） 此属中多数种没有气生菌丝，只有营养菌丝。在培养15h至4 天内，菌丝体产生横膈膜，分枝的菌丝体突然全部断裂成杆 状、球状或带叉的杆状体。 小单孢菌属（Micromonospora) 不行成气生菌丝，只在营养菌丝上长出很多分枝小梗，顶端 着生着一个孢子；其菌落较链霉菌小得多。 放线菌属（Actinomyces) 多为致病菌。只有营养菌丝，有隔膜，可断裂成V或Y形体。 六、放线菌的代表属 第三节 支原体（Mycoplasma)、立克 次氏体(Rickettsia)和衣原体 (Chlamydia) 第四节 蓝细菌 (cyanobacteria) Isc(QAk4YJtd)RBl5ZJtd)RBl5ZJtd)RBl5#Kue-SCm6#Kue-SCm6#Kue-SCn7!Lvf+TDn7!Lvf+TDn7!Lvf+TEo8$Mwg0UEo8$Mwg0UEo8$Mwg0VFp9%Nxh1VFp9%Nxh1VFp9%Nxi2WGqa&Oyi2WGqa&Oyi2WGqa&Ozj3XHrb*Pzj3XHrb*Pzj3XHrb(QAk4YIsc(QAk4YIsc(QAk4YIsd)RBl5ZJtd)RBl5ZJtd)RBl5ZKue-SCm6#Kue-SCm6#Kue- 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