THE NATURE OF THE INTESTINAL VESICLE IN NEMATODES OF THE FAMILY STEINERNEMATIDAE
THE NATURE OF THE INTESTINAL VESICLE IN NEMATODES OF THE FAMILY STEINERNEMATIDAE
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DOI：
10.1016/s0020-7519(83)80032-0
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发表时间：
1983-01-01
影响因子：
4
通讯作者：
AKHURST, RJ
中科院分区：
文献类型：
--
作者：
BIRD, AF;AKHURST, RJ
肠小泡是斯氏线虫科线虫感染性幼虫肠道心室部分的变体。这种结构通常容纳着斯氏线虫属的嗜线虫致病杆菌，我们在许多物种中使用微分干涉对比光学器件在活体状态下或在电子显微镜下的切片中对这种结构进行了检查。在 Bibionis 和 Kraussei 中，囊泡是一种充满细菌的厚壁、锥形结构。 在 S. glaseri 中，囊泡壁的厚度更加不规则，并且细菌排列不那么紧密；在 S.feltiae 中，壁更薄。囊泡的发育并不依赖于细菌的存在；在无菌生长的 S. bibionis 感染性幼虫中产生了类似但空的结构。未描述的被命名为 Q1 的斯氏线虫的囊泡与上面提到的囊泡有很大不同，因为它具有明显的微绒毛。该结构的内腔充满了非晶基质，其中细菌嵌入其中，彼此间隔一定距离。不同斯氏线虫的感染性幼虫的肠囊泡形态似乎存在相当大的差异。
The intestinal vesicle is a modification of the ventricular portion of the intesitne of infective larvae of nematodes of the family Steinernematidae. This structure, which normally houses the bacterium Xenorhabdus nematophilus in Steinernema spp., was examined in a number of species either in the living state using differential interference contrast optics or in sections under the EM. In S. bibionis and S. kraussei the vesicle was a thick walled, tapered structure packed with bacteria. In S. glaseri the wall of the vesicle was more irregular in thickness and the bacteria were not so tightly packed; in S. feltiae the wall was thinner still. Development of the vesicle is not dependent on the presence of bacteria; a similar but empty structure was produced in axenically grown infective larvae of S. bibionis. The vesicle of an undescribed steinernematid designated Q1 differed substantially from those mentioned above in that it had distinct microvilli. The lumen of this structure was filled with an amophorous matrix in which bacteria were embedded some distance apart from each other. There appears to be considerable variation in the morphology of the intestinal vesicle in the infective larvae of different steinernematids.