Genetics of a de novo origin of undifferentiated multicellularity

Autor: Matthew D. Herron, William C. Ratcliff, Jacob Boswell, Frank Rosenzweig
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Royal Society Open Science, Vol 5, Iss 8 (2018)
Druh dokumentu: article
ISSN: 2054-5703
DOI: 10.1098/rsos.180912
Popis: The evolution of multicellularity was a major transition in evolution and set the stage for unprecedented increases in complexity, especially in land plants and animals. Here, we explore the genetics underlying a de novo origin of multicellularity in a microbial evolution experiment carried out on the green alga Chlamydomonas reinhardtii. We show that large-scale changes in gene expression underlie the transition to a multicellular life cycle. Among these, changes to genes involved in cell cycle and reproductive processes were overrepresented, as were changes to C. reinhardtii-specific and volvocine-specific genes. These results suggest that the genetic basis for the experimental evolution of multicellularity in C. reinhardtii has both lineage-specific and shared features, and that the shared features have more in common with C. reinhardtii's relatives among the volvocine algae than with other multicellular green algae or land plants.
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