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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Restricted cellular differentiation in cyanobacterial filaments
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Restricted cellular differentiation in cyanobacterial filaments

机译:限制蓝藻细丝的细胞分化

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摘要

Although commonly considered simple organisms that grow as single cells, many bacteria can grow as filaments made of chains of cells. In cyanobacteria, prokaryotes that perform oxygen-evolving photosynthesis, filamentous forms developed early in evolution (1). In the most complex filamentous cyanobacteria, as many as four cell types can be found: vegetative cells that perform oxygenic photosynthesis and concomitant CO_2 fixation; the cells of hormogonia, which are small motile filaments frequently made of small cells; akinetes, which are resting cells; and het-erocysts, which are terminally differentiated cells specialized in the fixation of atmospheric nitrogen (2, 3).
机译:尽管通常认为简单的生物体会以单个细胞的形式生长,但许多细菌仍可以以由细胞链制成的细丝形式生长。在蓝细菌中,原核生物可以进行氧气的光合作用,其丝状形式在进化的早期就已经形成(1)。在最复杂的丝状蓝细菌中,可以找到多达四种细胞类型:执行氧光合作用和伴随的CO_2固定的营养细胞;激素性细胞,通常是由小细胞组成的活动细丝; resting鱼,它们是静止细胞;和异质囊肿,是终末分化的细胞,专门用于固定大气中的氮(2,3)。

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  • 作者

    Enrique Floras;

  • 作者单位

    Institute de Bioquimica Vegetal y Fotosintesis, Consejo Superior de Investigaciones Cientificas and Universidad de Sevilla, E-41092 Seville, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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