What we’re reading: The diversification of bacteria, landscape genomics of cottonwood, and the skewed sex ratio of science

In the journals

Plata G., C.S. Henry, and D. Vitkup. 2014. Long-term phenotypic evolution of bacteria. Nature. doi: 10.1038/nature13827.

Overall, bacterial phenotypic evolution can be described by a two-stage process with a rapid initial phenotypic diversification followed by a slow long-term exponential divergence. The observed average divergence trend, with approximately similar fractions of phenotypic properties changing per unit time, continues for billions of years.

Geraldes, A., N. Farzaneh, C. J. Grassa, A. D. McKown, R. D. Guy, S. D. Mansfield, C. J. Douglas, and Q. C. B. Cronk. 2014. Landscape genomics of Populus trichocarpa: the role of hybridization, limited gene flow, and natural selection in shaping patterns of population structure. Evolution. 68(11):3260–3280. doi: 10.1111/evo.12497.

Gene Ontology analyses revealed that FST outliers are overrepresented in genes involved in circadian rhythm and response to red/far-red light when the entire dataset is considered, whereas in southern BC heat response genes are overrepresented.

In the news

“Although we may never fully understand all the reasons that led to the skewed sex ratio problem we experience today, we will at least have cured the ill. And personally I’d rather be rid of the problem while not completely understanding it, than fully understanding it and not having solved it.”

“Below you’ll find a small fraction of those outstanding contemporary female naturalists that you may never have heard of but who are contributing greatly to our understanding of the natural world.”

“The letter disinvites any registrants [for the annual meeting of the American Society of Tropical Medicine and Hygiene] who’ve cared for people with Ebola in the last three weeks. ‘In Louisiana, we love to welcome visitors, but we must balance that hospitality with the protection of Louisiana residents and other visitors,’ the state officials said.”

Share

About Jeremy Yoder

Jeremy Yoder is an Assistant Professor of Biology at California State University, Northridge. He also blogs at Denim and Tweed, and tweets under the handle @jbyoder.
This entry was posted in linkfest. Bookmark the permalink.