Filamentous cyanobacterial associates of the marine planktonic cyanobacterium Trichodesmium
Filamentous cyanobacterial associates of the marine planktonic cyanobacterium Trichodesmium
复制标题
海洋浮游蓝藻 Trichodesmium 的丝状蓝藻伙伴
DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
E. Carpenter
中科院分区：
文献类型：
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作者：
P. J. Siddiqui;B. Bergman;E. Carpenter
摘要在马尾藻海采集的海洋浮游蓝藻Trichodesum的菌落中发现了三种丝状微生物。根据细胞直径分为大(Ltf，约1μm)、中(MTf，约0.5μm)和小(STf，约0.2μm)三类。在梭形菌落和红曲霉菌落中均可检测到这三种类型，在放射状排列的毛霉菌落中也可检测到这三种类型。MTF最为丰富且始终存在，而其他两种类型出现的频率较低。经荧光、扫描、透射显微镜和免疫金标记法鉴定，LTF和MTF为非异晶蓝藻，初步归属于‘lyngbya，Plectonema.Phormidium group‘。LTF呈振荡运动，横壁清晰，并含有藻红蛋白。MTF常见于毛霉菌丝的胞外鞘下，尽管其数量较少，但仍可见大量的MTF。
Abstract Three types of filamentous microorganisms were associated with colonies of the marine planktonic cyanobacterium Trichodesmium collected in the Sargasso Sea. The filaments were categorized according to the cell diameter into large (LTF; about 1 μm), medium (MTF; about 0.5 μm) and small (STF; about 0.2 μm)filaments. All three types were detected in fusiform colonies of both T. thiebautii Gomont and T. erythraeum Ehrenberg ex Gomont as well as in radially arranged Trichodesmium colonies. The MTF were most abundant and always present whereas the other two types appeared less frequently. The LTF and MTF were identified as non-heterocystous cyanobacteria using epifluorescence, scanning and transmission microscopy as well as immunogold labelling and were tentatively ascribed to the ‘Lyngbya, Plectonema. Phormidium group’. The LTF showed oscillatory movements and distinct cross walls, and possessed phycoerythrin. The MTF were often seen below the extracellular sheath of Trichodesmium filaments, and altho...