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首页> 外文期刊>Journal of bacteriology >Morphogenesis and Fine Structure of Leucothrix mucor and Effects of Calcium Deficiency
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Morphogenesis and Fine Structure of Leucothrix mucor and Effects of Calcium Deficiency

机译：白喉粘液的形态发生和精细结构及钙缺乏的影响

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摘要

Phenotypic expressions of morphogenesis and fine structure of Leucothrix mucor were determined when the organism was grown with and without added CaCl2 in a synthetic seawater medium. Evidence is presented to show that a bulb can form in the absence of a knot formation and that a bulb may give rise to a “germ-tube.” In comparison with normal cells, which show transverse septa at right angles to the axis in dividing cells, the bulbs exhibited transverse septa at odd angles, which may explain the mechanism of bulb formation. The most striking morphological feature due to Ca++ deficiency was the absence of rosettes; instead, the culture showed an extremely filamentous morphology and a peculiar cord formation. Also, the Ca++-deficient cells contained heavily stained intracytoplasmic granules which possibly represent tight packing of the smaller particles of ribonucleoprotein. Various bulbous forms observed in the Ca++-deficient culture showed more pronounced elaboration of mesosomes as intracytoplasmic structures than those seen in the complete medium.
机译：当在有或没有添加CaCl 2 的合成海水培养基中生长该微生物时，测定了 Leucothrix mucor 的形态发生和精细结构的表型表达。证据表明，在没有打结的情况下可以形成鳞茎，并且鳞茎可能引起“胚芽管”。与正常细胞相比，正常细胞在分隔的细胞中显示出与轴成直角的横向间隔，而鳞茎在奇数角度上呈现出横向间隔，这可以解释鳞茎形成的机理。 Ca ++ 缺乏引起的最明显的形态学特征是没有花环。取而代之的是，培养物表现出极细的丝状形态和特殊的帘线形成。此外，Ca ++ 缺陷型细胞含有严重染色的胞浆内颗粒，可能代表较小核糖核蛋白颗粒的紧密堆积。在缺少Ca ++ 的培养物中观察到的各种球根形形式显示，与在完全培养基中观察到的相比，作为细胞质内结构的介体更明显。

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