GROWTH AND MORPHOLOGY OF ASTICCACAULIS-BIPROSTHECUM IN DEFINED MEDIA
GROWTH AND MORPHOLOGY OF ASTICCACAULIS-BIPROSTHECUM IN DEFINED MEDIA
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DOI：
10.1007/bf00446517
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发表时间：
1975-01-01
影响因子：
2.8
通讯作者：
PATE, JL
中科院分区：
文献类型：
--
作者：
LARSON, RJ;PATE, JL
观察了A.在确定成分的培养基中研究了双头囊藻，以确定各种化合物对生长速率和对生命周期的形态学事件的表达的影响。prosthecae的长度不能通过改变Pi的浓度来控制，如其他柄杆菌所示。在成分确定的培养基中，生长在有利于快速代谢的条件下受到抑制，这显然是由于在细胞分裂发生之前，细胞绝对需要完成生命周期的所有阶段。在这些条件下生长的细胞形态异常，即，细胞呈长形和分枝状，产生很少的前囊或群集细胞。生长的相关细菌，Asticcacaulis菌株S-3，不抑制条件有利于快速代谢。在快速生长过程中，这种生物体的细胞分裂发生在蜂群阶段，并且不产生前囊。S-3中的细胞分裂并不必然与复杂生命周期中所有阶段的完成偶联，并且形态发生可由培养条件控制。
The growth and morphology of cells of A. biprosthecum were studied in defined media to determine the effects of various compounds on the growth rate and on the expression of morphological events of the life cycle. The length of prosthecae could not be controlled by varying the concentration of Pi as was shown for other caulobacters. In defined media, growth was inhibited during conditions favoring rapid metabolism, apparently due to an absolute requirement for cells to complete all stages of the life cycle before cell division could occur. The morphology of cells grown under these conditions was aberrant, i.e., cells appeared elongated and branched and few prosthecae or swarmer cells were produced. Growth of a related bacterium, Asticcacaulis strain S-3, was not inhibited by conditions favoring rapid metabolism. During rapid growth, cell division in this organism occurs in the swarmer stage and prosthecae are not produced. Cell division in S-3 is not obligately coupled to completion of all stages in the complex life cycle and morphogenesis can be controlled by cultural conditions.