Thursday, July 05, 2018

Angie Roles publishes in Ecology and Evolution

Blandy Experimental Farm, Boyce, Virginia
Recent research by Associate Professor of Biology Angie Roles and collaborators "assessed phenotypes associated with survival and reproductive success in over 30,000 plants representing 100 mutation accumulation lines of Arabidopsis thaliana across four temporal environments at a single field site." The authors conclude, "The combination of large environmental variance with a mean effect of mutation near zero suggests that mutations could contribute substantially to standing genetic variation."

Rutter, Matthew T., Roles, Angela J., & Fenster, Charles B. (2018). Quantifying natural seasonal variation in mutation parameters with mutation accumulation lines. Ecology and Evolution, 8(11), 5575-5585. 10.1002/ece3.4085  (Open Access)

Monday, June 18, 2018

Dan Stinebring contributes as part of the NANOGrav collaboration.

published by Institute of Physics IOPScience
Dan Stinebring, Professor of Physics and Astronomy, is one of 60+ authors, representing 41 organizations and institutions, who contributed to the research described in this recent publication:

Arzoumanian, Z., Baker, P. T., Brazier, A., Burke-Spolaor, S., Chamberlin, S. J., Chatterjee, S., . . . NANOGrav Collaboration. (2018). The NANOGrav 11 Year Data Set: Pulsar-timing Constraints on the Stochastic Gravitational-wave Background. Astrophysical Journal, 859(1), 47. 10.3847/1538-4357/aabd3b

Partial abstract:
"We search for an isotropic stochastic gravitational-wave background (GWB) in the newly released 11. year data set from the North American Nanohertz Observatory for Gravitational Waves (NANOGrav). While we find no evidence for a GWB, we place constraints on a population of inspiraling supermassive black hole (SMBH) binaries, a network of decaying cosmic strings, and a primordial GWB. For the first time, we find that the GWB constraints are sensitive to the solar system ephemeris (SSE) model used and that SSE errors can mimic a GWB signal."   Learn more about NANOGrav

Sunday, May 27, 2018

Michael Moore publishes two articles in American Journal of Botany: Tree of Life special issue

Associate Professor of Biology Michael Moore is among twenty-one collaborators on the first paper listed below, which also appears in Tree of Life virtual issue:

From cacti to carnivores: Improved phylotranscriptomic sampling and hierarchical homology inference provide further insight into the evolution of Caryophyllales.
Joseph F. Walker, … Michael J. Moore, Stephen A. Smith.
American Journal of Botany  105 (3): 446-462
First published: 08 May 2018 https://doi.org/10.1002/ajb2.1069  (open access)

Moore also co-authored this guide:
Using and navigating the plant tree of life.
Douglas E. Soltis, Michael J. Moore, Emily B. Sessa, Stephen A. Smith, Pamela S. Soltis.
American Journal of Botany, Special Issue
First Published: 27 April 2018
https://doi.org/10.1002/ajb2.1071 (open access)

Wednesday, May 23, 2018

Senior August Blackman publishes in Behavioral Ecology

Senior Augie Blackman is co-author of this paper resulting from research supported by the National Science Foundation Research Experience for Undergraduate program at Mountain Lake Biological Station, University of Virginia. 

Plethodon glutinosus, from Caudata.org
Salamander climbing behavior varies among species and is correlated with community composition.
Tori D Mezebish, August Blackman, Alexander J Novarro.
Behavioral Ecology, Volume 29, Issue 3, 9 May 2018, Pages 686–692,
https://doi.org/10.1093/beheco/ary022 (open access)

Partial abstract: Species coexistence is often facilitated by behavioral strategies that minimize competition for limited resources. Terrestrial, kingless salamanders (genus Plethodon) coexist in predictable assemblages of body size guilds, but little is known about the behavioral mechanisms that promote such coexistence. Here, we considered the hypothesis that Plethodon salamanders use climbing behavior to reduce competitive interactions, thereby promoting coexistence through spatial partitioning.  (As indexed in Web of Science)

Friday, May 11, 2018

Galaxy pairs and galaxy mergers featured in new publication from Jillian Scudder

https://bit.ly/2wzalwx
New publication by Jillian Scudder, Assistant Professor, Physics and Astronomy

Violino, Giulio; Ellison, Sara L.; Sargent, Mark; Coppin, Kristen E. K.;
Scudder, Jillian M.; Mender, Trevor J.; Saintonge, Amelie.  Galaxy pairs in the SDSS - XIII. The connection between enhanced star formation and molecular gas properties in galaxy mergers.


Monthly Notices of the Royal Astronomical Society, 476 (2):2591-2604; 10.1093/mnras/sty345 MAY 2018 

Published by Oxford University Press, Academic on behalf of the Royal Astronomical Society.

Thursday, May 03, 2018

Senior Jacob Rosenthal (Biology) co-authors paper in GBE

About GBE
Congratulations to Jacob Rosenthal, who co-authored this article in Genome Biology and Evolution, an open access journal published by Oxford University on behalf of the Society for Molecular Biology and Evolution:

"Patterns of Population Variation in Two Paleopolyploid Eudicot Lineages Suggest That Dosage-Based Selection on Homeologs Is Long-Lived."

AUTHORS:  Hao, Yue; Washburn, Jacob D.; Rosenthal, Jacob; Nielsen, Brandon; Lyons, Eric; Edger, Patrick P.; Pires, J. Chris; Conant, Gavin C.

GENOME BIOLOGY AND EVOLUTION  Volume: 10  Issue: 3  Pages: 999-1011
DOI: 10.1093/gbe/evy061  Published: MAR 2018
 
Partial abstract: Genes that are inherently subject to strong selective constraints tend to be overretained in duplicate after polyploidy. They also continue to experience similar, but somewhat relaxed, constraints after that polyploidy event. We sought to assess for how long the influence of polyploidy is felt on these genes' selective pressures. We analyzed two nested polyploidy events in Brassicaceae: the At-a genome duplication that is the most recent polyploidy in the model plant Arabidopsis thaliana and a more recent hexaploidy shared by the genus Brassica and its relatives... Our results paint a picture of the long-lived effects of polyploidy on plant genomes, suggesting that even yesterday's polyploids still have distinct evolutionary trajectories.

Co-authors include researchers from North Carolina State University, Cornell University, Clarion University of Pennsylvania, Michigan State University, and University of Missouri.  As indexed in Web of Science.

Monday, March 26, 2018

Brody WorkLounge Takes a Corner

Something new in the library - give it a try!  The Brody WorkLounge, by Steelcase, was delivered during Spring break.  It might become your new favorite.  Let us know what you think.  Leave a comment here or email the Science Library.  Enjoy.