Document Type

Article

Publication Title

Royal Society Open Science

Publication Date

8-29-2018

Volume

5

Issue

8

Disciplines

Biology | Life Sciences

Abstract

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.

Keywords

Chlamydomonas, Experimental evolution, Genetics, Major transitions, Multicellularity

DOI

http://dx.doi.org/10.1098/rsos.180912

Rights

© 2018 The Authors

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

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