10 Works

Data from: A longitudinal cline characterizes the genetic structure of human populations in the Tibetan plateau

Choognwon Jeong, Benjamin M. Peter, Buddha Basnyat, Maniraj Neupane, Cynthia M. Beall, Geoff Childs, Sienna R. Craig, John Novembre, Anna Di Rienzo & Choongwon Jeong
Indigenous populations of the Tibetan plateau have attracted much attention for their good performance at extreme high altitude. Most genetic studies of Tibetan adaptations have used genetic variation data at the genome scale, while genetic inferences about their demography and population structure are largely based on uniparental markers. To provide genome-wide information on population structure, we analyzed new and published data of 338 individuals from indigenous populations across the plateau in conjunction with worldwide genetic...

Data from: All roads lead to weediness: patterns of genomic divergence reveal extensive recurrent weedy rice origins from South Asian Oryza

Zhongyun Huang, Nelson D. Young, Michael Reagon, Katie E. Hyma, Kenneth M. Olsen, Yulin Jia & Ana L. Caicedo
Weedy rice (Oryza spp.), a weedy relative of cultivated rice (O. sativa), infests and persists in cultivated rice fields worldwide. Many weedy rice populations have evolved similar adaptive traits, considered part of the “agricultural weed syndrome,” making this an ideal model to study the genetic basis of parallel evolution. Understanding parallel evolution hinges on accurate knowledge of the genetic background and origins of existing weedy rice groups. Using population structure analyses of South Asian and...

Data from: Expression and function of ATP-dependent potassium channels in zebrafish islet β-cells

Christopher H. Emfinger, Alecia Welscher, Zihan Yan, Yixi Wang, Hannah Conway, Jennifer B. Moss, Larry G. Moss, Maria S. Remedi & Colin G. Nichols
ATP-sensitive potassium channels (KATP channels) are critical nutrient sensors in many mammalian tissues. In the pancreas, KATP channels are essential for coupling glucose metabolism to insulin secretion. While orthologous genes for many components of metabolism–secretion coupling in mammals are present in lower vertebrates, their expression, functionality and ultimate impact on body glucose homeostasis are unclear. In this paper, we demonstrate that zebrafish islet β-cells express functional KATP channels of similar subunit composition, structure and metabolic...

Data from: Host-specific effects of soil microbial filtrates prevail over those of arbuscular mycorrhizae in a fragmented landscape

Camila Pizano, Scott A. Mangan, James H. Graham & Kaoru Kitajima
Plant-soil interactions have been shown to determine plant community composition in a wide range of environments. However, how plants distinctly interact with beneficial and detrimental organisms across mosaic landscapes containing fragmented habitats is still poorly understood. We experimentally tested feedback responses between plants and soil microbial communities from adjacent habitats across a disturbance gradient within a human-modified tropical montane landscape. In a greenhouse experiment, two components of soil microbial communities were amplified; arbuscular mycorrhizal fungi...

Data from: Ethnically Tibetan women in Nepal with low hemoglobin concentration have better reproductive outcomes

Jang Ik Cho, Buddha Basnyat, Choongwon Jeong, Anna Di Rienzo, Geoff Childs, Sienna Craig, Jiayang Sun, Cynthia Beall & Cynthia M. Beall
Abstract Background and objectives: Tibetans have distinctively low hemoglobin concentrations at high altitudes compared with visitors and Andean highlanders. This study hypothesized that natural selection favors an unelevated hemoglobin concentration among Tibetans. It considered nonheritable sociocultural factors affecting reproductive success and tested the hypotheses that a higher percent of oxygen saturation of hemoglobin (indicating less stress) or lower hemoglobin concentration (indicating dampened response) associated with higher lifetime reproductive success. Methodology: We sampled 1006 post-reproductive ethnically...

Data from: Genetic and demographic founder effects have long-term fitness consequences for colonising populations

Marianna Szűcs, Brett A. Melbourne, Ty Tuff, Christopher Weiss-Lehman & Ruth A. Hufbauer
Colonisation is a fundamental ecological and evolutionary process that drives the distribution and abundance of organisms. The initial ability of colonists to establish is determined largely by the number of founders and their genetic background. We explore the importance of these demographic and genetic properties for longer term persistence and adaptation of populations colonising a novel habitat using experimental populations of Tribolium castaneum. We introduced individuals from three genetic backgrounds (inbred – outbred) into a...

Data from: Does high relatedness promote cheater-free multicellularity in synthetic lifecycles?

R. Fredrik Inglis, Erica Ryu, Asikhia Odion, Joan E. Strassmann, David C. Queller & O. Asikhia
The evolution of multicellularity is one of the key transitions in evolution and requires extreme levels of cooperation between cells. However, even when cells are genetically identical, non-cooperative cheating mutants can arise that cause a breakdown in cooperation. How then, do multicellular organisms maintain cooperation between cells? A number of mechanisms that increase relatedness amongst cooperative cells have been implicated in the maintenance of cooperative multicellularity including single cell bottlenecks and kin recognition. In this...

Data from: The diverse dietary profiles of MIS 3 cave bears from the Romanian Carpathians: insights from stable isotope (δ13C and δ15N) analysis

Marius Robu, Jonathan G. Wynn, Ionuţ C. Mirea, Alexandru Petculescu, Marius Kenesz, Cristina M. Puşcaş, Marius Vlaicu, Erik Trinkaus & Silviu Constantin
Late Pleistocene European cave bears (Ursus spelaeus) have been considered to be largely vegetarian, although stable isotope data (δ13C and δ15N values) from the Romanian Carpathians has suggested considerable dietary variation. Here we evaluate previous and additional adult cave bear isotopic data from four Marine Isotope Stage 3 (MIS 3) sites in the Carpathians. Peştera Urşilor (N = 35), Peştera Cioclovina (N = 32), Peştera Muierilor (N = 8), and Peştera cu Oase (N =...

Data from: Day/night upper thermal limits differ within Ectatomma ruidum ant colonies

Annika S. Nelson, Trey Scott, Maciej Barczyk, Terrence P. McGlynn, Arian Avalos, Elizabeth Clifton, Amlan Das, Andreia Figueiredo, Laura L. Figueroa, Mark Janowiecki, Sarah Pahlke, Jignasha D. Rana & Sean O'Donnell
In the tropics, daily temperature fluctuations can pose physiological challenges for ectothermic organisms, and upper thermal limits may affect foraging activity over the course of the day. Variation in upper thermal limits can occur among and within species, and for social insects such as ants, within colonies. Within colonies, upper thermal limits may differ among individuals or change for an individual throughout the day. Daytime foragers of the Neotropical ant Ectatomma ruidum have higher critical...

Data from: Continent-wide climatic variation drives local adaptation in North American white clover

Sara J. Wright, Daniel Cui Zhou, Amy Kuhle & Kenneth M. Olsen
Climate-associated clines in adaptive polymorphisms are commonly cited as evidence of local adaptation within species. However, the contribution of the clinally varying trait to overall fitness is often unknown. To address this question, we examined survival, vegetative growth and reproductive output in a central US common garden experiment using 161 genotypes of white clover (Trifolium repens L.) originating from 15 locations across North America. White clover is polymorphic for cyanogenesis (hydrogen cyanide release upon tissue...

Registration Year

  • 2017
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Affiliations

  • Washington University in St. Louis
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  • University of Chicago
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  • Case Western Reserve University
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  • Oxford University Clinical Research Unit
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  • University of Massachusetts Amherst
    1
  • Duke University
    1
  • University of Cologne
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  • George Washington University
    1
  • University of Calcutta
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  • Texas A&M University
    1