Genetic Heterogeneity in Wild Isolates of Cellular Slime Mold Social Groups
Genetic Heterogeneity in Wild Isolates of Cellular Slime Mold Social Groups
复制标题
细胞粘菌社会群体野生分离株的遗传异质性
DOI：
10.1007/s00248-010-9635-4
复制
发表时间：
2010
影响因子：
3.6
通讯作者：
V. Nanjundiah
中科院分区：
文献类型：
--
作者：
Santosh Sathe;Sonia Kaushik;A. Lalremruata;R. Aggarwal;J. Cavender;V. Nanjundiah
本研究解决了细胞黏菌（csm）社会群体的空间分布、分散和遗传异质性问题。csm是土壤变形虫，具有不同寻常的生命周期，由孤独和社会交替阶段组成。因为社会阶段涉及到劳动分工，似乎是一种极端形式的“利他主义”，所以csm提出了关于社会性起源和维持的有趣进化问题。要回答这些问题，了解野外社会群体的遗传结构是必要的。我们证实，csm在印度南部未受干扰的森林土壤中广泛存在。它们通过各种大型哺乳动物的粪便传播很远的距离。与这种传播模式相一致的是，在详细研究的两个物种Dictyostelium giganteum和Dictyostelium purpureum中，大多数社会群体都是多克隆的。
This study addresses the issues of spatial distribution, dispersal, and genetic heterogeneity in social groups of the cellular slime molds (CSMs). The CSMs are soil amoebae with an unusual life cycle that consists of alternating solitary and social phases. Because the social phase involves division of labor with what appears to be an extreme form of “altruism”, the CSMs raise interesting evolutionary questions regarding the origin and maintenance of sociality. Knowledge of the genetic structure of social groups in the wild is necessary for answering these questions. We confirm that CSMs are widespread in undisturbed forest soil from South India. They are dispersed over long distances via the dung of a variety of large mammals. Consistent with this mode of dispersal, most social groups in the two species examined for detailed study, Dictyostelium giganteum and Dictyostelium purpureum, are multi-clonal.