多细胞趋磁原核生物研究进展

Progress in study of multicellular magnetotactic prokaryotes

多细胞趋磁原核生物指一类由含有磁小体的革兰氏阴性原核细胞聚集而成的球形或者卵球形细胞聚集体,一般由745个细胞组成,直径在223μm之间,它们可在地磁场或外加磁场中沿磁力线定位并做定向运动。通过对巴西潟湖、美国盐湖、德国和法国海岸带花瓣型MMPs以及最近对中国青岛海域潮间带菠萝型MMPs研究结果的总结,分别从MMPs的生物学特征、细胞内容物以及生态学分布及分类地位等方面的研究进行综述,并对未来研究方向进行一定的展望。

Multicellular magnetotactic prokaryotes（MMPs） compose of 7 45 prokaryotic cells highly organized into a spherical or ellipsoidal shape.The aggregated multicellular globule display a magnetotactic behavior.MMPs have being attracted increasing interest of researchers worldwide since they were discovered in 1983.Here we reviewed the progress in MMPs investigation from the points view of morphology,cytology,and ecology,which is based on the studies of the samples collected from the lagoon in Brazil,salt ponds in the USA,coast tidal sand flats in Germany and the Mediterranean sea near Marseille city in France,and a novel pineapple-morphology MMPs from the intertidal zones of China Sea in Qingdao.