Resolving the first steps to multicellularity
Resolving the first steps to multicellularity
复制标题
DOI：
10.1016/j.tree.2008.02.003
复制
发表时间：
2008-05-01
影响因子：
16.8
通讯作者：
Sachs, Joel L.
中科院分区：
文献类型：
--
作者：
Sachs, Joel L.
多细胞生命已经进化了很多次，但每一次起源都需要自由细胞无私地整合成更高层次的个体。这种转变如何演变？在一篇新论文中，Herron和Michod调查了群体藻类中多细胞的最新起源。他们的系统发育重建提供了一个早期步骤的惊人解剖，利他主义特征是它的关键。关键的进化逆转也被揭示出来，细胞自私可能阻碍了多细胞整合。
Multicellular life has evolved many times, yet each origin requires free cells to integrate unselfishly into a higher-level individual. How can such transitions evolve? In a new paper, Herron and Michod investigate the recent origins of multicellularity in colonial algae. Their phylogenetic reconstructions provide a striking dissection of early steps, and altruistic traits are at the crux of it. Key evolutionary reversals are also revealed, where cellular selfishness might have thwarted multicellular integration.