268 Works

Exploring whole-genome duplicate gene retention with complex genetic interaction analysis

Elena Kuzmin, Benjamin VanderSluis, Alex N. Nguyen Ba, Wen Wang, Elizabeth N. Koch, Matej Usaj, Anton Khmelinskii, Mojca Mattiazzi Usaj, Jolanda Van Leeuwen, Oren Kraus, Amy Tresenrider, Mojca Mattiazzi Usaj, Jolanda Van Leeuwen, Oren Kraus, Amy Tresenrider, Michael Pryszlak, Ming-Che Hu, Brenda Varriano, Michael Costanzo, Michael Knop, Alan Moses, Chad L. Myers, Brenda J. Andrews & Charles Boone
Whole-genome duplication has played a central role in genome evolution of many organisms, including the human genome. Most duplicated genes are eliminated and factors that influence the retention of persisting duplicates remain poorly understood. Here, we describe a systematic complex genetic interaction analysis with yeast paralogs derived from the whole-genome duplication event. Mapping digenic interactions for a deletion mutant of each paralog and trigenic interactions for the double mutant provides insight into their roles and...

Data from: Using large-scale tropical dry forest restoration to test successional theory

Leland Werden, Erick Calderón-Morales, Pedro Alvarado J., Derek Nedveck, Jennifer Powers & Milena Gutiérrez L.
Microclimatic conditions change dramatically as forests age and impose strong filters on community assembly during succession. Light availability is the most limiting environmental factor in tropical wet forest succession; by contrast, water availability is predicted to strongly influence tropical dry forest (TDF) successional dynamics. While mechanisms underlying TDF successional trajectories are not well understood, observational studies have demonstrated that TDF communities transition from being dominated by species with conservative traits to species with acquisitive traits,...

Repeated fire shifts carbon and nitrogen cycling by changing plant inputs and soil decomposition across ecosystems

Adam Francis Pellegrini, Sarah Hobbie, Peter Reich, Ari Jumpponen, Jack Brookshire, Anthony Caprio, Corli Coetsee & Robert Jackson
Fires shape the biogeochemistry and functioning of many ecosystems, and fire frequencies are changing across much of the globe. Frequent fires can change soil carbon (C) and nitrogen (N) storage by altering the quantity and chemistry of plant inputs through changes in plant biomass and composition as well as altering decomposition of soil organic matter. How decomposition rates change with shifting inputs remains uncertain because most studies focus on the effects of single fires, where...

Leaf size of woody dicots predicts ecosystem primary productivity

Yaoqi Li, Yaoqi Li, Peter Reich, Bernhard Schmid, Nawal Shrestha, Xiao Feng, Tong Lyv, Brian Maitner, Xiaoting Xu, Yichao Li, Dongting Zou, Zheng-Hong Tan, Xiangyan Su, Zhiyao Tang, Qinghua Guo, Xiaojuan Feng, Brian Enquist & Zhiheng Wang
A key challenge in ecology is to understand the relationships between organismal traits and ecosystem processes. Here, with a novel dataset of leaf length and width for 10,480 woody dicots in China and 2,374 in North America, we show that the variation in community mean leaf size is highly correlated with the variation in climate and ecosystem primary productivity, independent of plant life form. These relationships likely reflect how natural selection modifies leaf size across...

Cloquet Forestry Center arboretum larch individual tree diameter and height 2016

Benjamin Koenig & Kyle Gill
During August 2 through September 20, 2016 Kyle Gill, University of Minnesota Cloquet Forestry Center (CFC) Manager and Research Coordinator, led an effort to sample individual tree size on 139 larch trees of six different genetic and geographic sources found in the CFC arboretum; genetic or geographic source available upon request.

Recovery from infection is more likely to favor the evolution of migration than social escape from infection

Allison Shaw & Sandra Binning
1. Pathogen and parasite infections are increasingly recognized as powerful drivers of animal movement, including migration. Yet, infection-related migration benefits can result from a combination of environmental and/or social conditions, which can be difficult to disentangle. 2. Here, we focus on two infection-related mechanisms that can favor migration: moving to escape versus recover from infection. By directly comparing the evolution of migration in response to each mechanism, we can evaluate the likely importance of changing...

Data from: Mating consequences of contrasting hermaphroditic plant sexual systems

Caitlin E. Tomaszewski, Mason W. Kulbaba & Lawrence D. Harder
For hermaphroditic angiosperms with multiple flowers the sex roles can be exclusively combined in bisexual flowers (monocliny), strictly separated among different flowers (monoecy), or arrayed in mixtures of bisexual flowers with female flowers (gynomonoecy) or male flowers (andromonoecy). The hypothesized benefits favoring the evolution of these contrasting hermaphroditic sexual systems are typically examined individually, usually by assessing success through only one sex role. We tested predictions of most hypotheses experimentally with an andromonoecious species, Anticlea...

Data supporting “Data Sharing Readiness in Academic Institutions” Version 1

Lisa R Johnston & Elizabeth Coburn
To address how the academic landscape for data repository and curation services changed since 2017 Spec Kit for Data Curation (Hudson-Vitale et al., 2017a), we used website content analysis to better understand data repository services in academic research libraries. Of the 124 ARL institutions we chose to focus on academic institutions and therefore excluded 10 civic libraries. For each of the remaining 114 ARL institutions we asked four research questions: Do they support data sharing...

Frequent burning causes large losses of carbon from deep soil layers in a temperate savanna

Adam Francis Pellegrini, Kendra K. McLauchlan, Sarah E. Hobbie, Michelle C. Mack, Abbey L. Marcotte, David M. Nelson, Steven Perakis, Peter B. Reich & Kyle Whittinghill
1. Fire activity is changing dramatically across the globe, with uncertain effects on ecosystem processes, especially belowground. Fire‐driven losses of soil carbon (C) are often assumed to occur primarily in the upper soil layers because the repeated combustion of aboveground biomass limits organic matter inputs into surface soil. However, C losses from deeper soil may occur if frequent burning reduces root biomass inputs of C into deep soil layers or stimulates losses of C via...

Supplement to: Hippocampal neurochemical profile and glucose transport kinetics in patients with type 1 diabetes

Petr Bednařík, Pierre Gilles Henry, Ameer Khowaja, Nathan Rubin, Anjali Kumar, Dinesh Deelchand, Lynn Eberly, Elizabeth Seaquist, Gülin Öz & Moheet Amir
Context Longstanding type 1 diabetes (T1D) may lead to alterations in hippocampal neurochemical profile. Upregulation of hippocampal glucose transport as a result of recurrent exposure to hypoglycemia may preserve cognitive function during future hypoglycemia in subjects with T1D and impaired awareness of hypoglycemia (IAH). The effect of T1D on hippocampal neurochemical profile and glucose transport is unknown. Objective To test the hypothesis that hippocampal neurochemical composition is altered in T1D and glucose transport is upregulated...

Variation in mouse pelvic morphology maps to locations enriched in Sox9 Class II and Pitx1 regulatory features

Charles Roseman, Terrence Capellini, Evelyn Jagoda, Scott Williams, Mark Grabowski, Christine O'Connor, John Polk & James Cheverud
Variation in pelvic morphology has a complex genetic basis and its patterning and specification is governed by conserved developmental pathways. Whether the mechanisms underlying the differentiation and specification of the pelvis also produce the morphological covariation on which natural selection may act is still an open question in evolutionary developmental biology. We use high-resolution Quantitative Trait Locus (QTL) mapping in the F34 generation of an advanced intercross experiment (LG,SM-G34) to characterize the genetic architecture of...

Data from: Nutrient availability controls the impact of mammalian herbivores on soil carbon and nitrogen pools in grasslands

Judith Sitters, E.R. Jasper Wubs, Elisabeth S. Bakker, Thomas W. Crowther, Peter B. Adler, Sumanta Bagchi, Jonathan D. Bakker, Lori Biederman, Elizabeth T. Borer, Elsa E. Cleland, Nico Eisenhauer, Jennifer Firn, Laureano Gherardi, Nicole Hagenah, Yann Hautier, Sarah E. Hobbie, Johannes M.H. Knops, Andrew S. MacDougall, Rebecca L. McCulley, Joslin L. Moore, Brent Mortensen, Pablo L. Peri, Suzanne M. Prober, Charlotte Riggs, Anita C. Risch … & Veen, G.F. (Ciska)
Grasslands have been subject to considerable alteration due to human activities globally, including widespread changes in populations and composition of large mammalian herbivores and elevated supply of nutrients. Grassland soils remain important reservoirs of carbon (C) and nitrogen (N). Herbivores may affect both C and N pools and these changes likely interact with increases in soil nutrient availability. Given the scale of grassland soil fluxes, such changes can have striking consequences for atmospheric C concentrations...

The percentage of total agricultural area under maize, rice, wheat, vegetables, pulses and fruit production, by country, subject to water scarcity in 2050 as estimated from a multi-model ensemble

N. Fitton, P. Alexander, N. Arnell, B. Bajzelj, K. Calvin, J. Doelman, J.S. Gerber, P. Havlik, T. Hasegawa, M. Herrero, T. Krisztin, H. Van Meijl, T. Powell, R. Sands, E. Stehfest, P.C. West & P. Smith
Projections of global changes in water scarcity with the current extent of maize, rice, wheat, vegetables, pulses and fruit production commodities were combined to identify the potential country level vulnerabilities of cropland land to water scarcity in 2050. The data relate to an analysis of the impact changes in water availability will have on maize, rice, wheat, vegetables, pulses and fruit production commodities availability in 2050.

Data from: The effect of autopolyploidy on population genetic signals of hard sweeps

Patrick Monnahan & Yaniv Brandvain
Searching for population genomic signals left behind by positive selection is a major focus of evolutionary biology, particularly as sequencing technologies develop and costs decline. The effect of the number of chromosome copies (i.e. ploidy) on the manifestation of these signals remains an outstanding question, despite a wide appreciation of ploidy being a fundamental parameter governing numerous biological processes. We clarify the principal forces governing the differential manifestation and persistence of the signal of selection...

Plant Respiration Modelling with JULES for a changing climate (1860-2100)

C. Huntingford, O.K. Atkin, A. Martinez-De La Torre, L.M. Mercado, M.A. Heskel, A.B. Harper, K.J. Bloomfield, O.S. O'Sullivan, P.B. Reich, K.R. Wythers, E.E. Butler, M. Chen, K.L. Griffin, P. Meir, M.G. Tjoelker, M.H. Turnbull, S. Sitch, A. Wiltshire & Y. Malhi
The dataset contains annual global plant respiration (and related diagnostics, such as Net Primary Productivity, Gross Primary Productivity and soil respiration), applicable for pre-industrial times (taken as year 1860) through to the end of the 21st Century (year 2100). The spatial resolution of the data is 2.5 degrees latitude x 3.75 degrees longitude. These diagnostics are outputs from the Joint UK Land Environment Simulator (JULES land surface model) under 4 different approaches to calcluate leaf...

Validation of an automated shape-matching algorithm for biplane radiographic spine osteokinematics and radiostereometric analysis error quantification

Arin M Ellingson & Craig C Kage
Biplane radiography and associated shape-matching provides non-invasive, dynamic, 3D osteo- and arthrokinematic analysis. Due to the complexity of data acquisition, each system should be validated for the anatomy of interest. The purpose of this study was to assess our system’s acquisition methods and validate a custom, automated 2D/3D shape-matching algorithm relative to radiostereometric analysis (RSA) for the cervical and lumbar spine. Additionally, two sources of RSA error were examined via a Monte Carlo simulation: 1)...

Complete Data and Analysis for: Constraining invader dominance: Effects of repeated herbicidal management and environmental factors on curlyleaf pondweed dynamics in 50 Minnesota lakes

Michael Verhoeven, Daniel J Larkin & Raymond M Newman
Curlyleaf pondweed (Potamogeton crispus) is one of the most widespread and widely managed aquatic invasive plants in North America. Despite decades of management, the efficacy of long-term management strategies and the effects of environmental drivers on curlyleaf pondweed populations remain uncertain. To evaluate the effects of management and environmental factors on within-lake distribution and local density of curlyleaf pondweed, we collated monitoring data from aquatic plant point-intercept surveys collected by a variety of lake managers...

Partial migration alters population ecology and food chain length: evidence from a salmonid fish

Suzanne Kelson, Mary Power, Jacques Finlay & Stephanie Carlson
Many migratory species, from monarch butterflies to wildebeest, express partial migration, where only a subset of a population migrates. This intraspecific variation is likely to have large ecological consequences. We studied the ecological consequences of partial migration in a salmonid fish, Oncorhynchus mykiss, in coastal streams in California, USA. One ecotype, steelhead trout, migrates to the ocean, whereas the other, rainbow trout, completes its lifecycle in freshwater. Migration has a strong genetic basis in O....

Data from: Feline immunodeficiency virus in puma: estimation of force of infection reveals insights into transmission

Jennifer Reynolds, Scott Carver, Mark Cunningham, Ken Logan, Winston Vickers, Kevin Crooks, Sue VandeWoude & Meggan Craft
Determining parameters that govern pathogen transmission (such as the force of infection, FOI), and pathogen impacts on morbidity and mortality, is exceptionally challenging for wildlife. Vital parameters can vary, for example across host populations, between sexes and within an individual's lifetime. Feline immunodeficiency virus (FIV) is a lentivirus affecting domestic and wild cat species, forming species-specific viral--host associations. FIV infection is common in populations of puma (Puma concolor), yet uncertainty remains over transmission parameters and...

Invasive species and biotic homogenization in temperate aquatic plant communities

Ranjan Muthukrishnan & Daniel Larkin
Aim: Biotic homogenization (BH), a reduction in the distinctness of species composition between geographically separated ecological communities in a region, is an important but underappreciated potential consequence of biological invasions. While BH theory has always considered invasions, it has generally been in a relatively narrow context, i.e., that the cosmopolitan nature of invasive species increases BH because of their shared presence across many locations. We sought to evaluate this component of BH as well as...

The Fungal Endophyte Epichloë festucae var. lolii Plays a Limited Role in Mediating Crown Rust Severity in Perennial Ryegrass

Garett Heineck
Perennial ryegrass (Lolium perenne L.) is an important turf and forage species that often becomes infected with Puccinia coronata f. sp. lolii, the causal pathogen of crown rust. Disease control through clavicipitaceous endophytes has been proposed as a potential biocontrol. Two field experiments were designed to determine the influence of native Epichloë endophyte infection on natural rust development across a diverse panel of perennial ryegrass germplasm. Experiment 1 used an isogenic population design in which...

Vanishing islands in the sky? A comparison of correlation- and mechanism-based forecasts of range dynamics for montane salamanders under climate change

Marta Lyons & Kenneth Kozak
Forecasting the effects of climate change on species and populations is a fundamental goal of conservation biology, especially for montane endemics which seemingly are under the greatest threat of extinction given their association with cool, high elevation habitats. Species distribution models (also known as niche models) predict where on the landscape there is suitable habitat for a species of interest. Correlative niche modeling, the most commonly employed approach to predict species’ distributions, relies on correlations...

How much do rare and crop-pollinating bees overlap in identity and flower preferences?

Molly MacLeod, James Reilly, Daniel Cariveau, Mark Genung, Michael Roswell, Jason Gibbs & Rachael Winfree
1. The biodiversity-centered approach to conservation prioritizes rare species, whereas the ecosystem services approach prioritizes species that provide services to people. The two approaches align when rare species provide ecosystem services, or when both groups of species benefit from the same management action. We use data on bee pollinators and the plant species they forage on to determine if there are rare species among the most important crop pollinators, and the extent to which plant...

Microbial associations and spatial proximity predict North American moose (Alces alces) gastrointestinal community composition

Nicholas Fountain-Jones, Nicholas Clark, Amy Kinsley, Michelle Carstensen, James Forester, Johnson Timothy, Elizabeth Miller, Seth Moore, Tiffany Wolf & Meggan Craft
Microbial communities are increasingly recognised as crucial for animal health. However, our understanding of how microbial communities are structured across wildlife populations is poor. Mechanisms such as interspecific associations are important in structuring free-living communities, but we still lack an understanding of how important interspecific associations are in structuring gut microbial communities in comparison to other factors such as host characteristics or spatial proximity of hosts. Here we ask how gut microbial communities are structured...

Data from: Allometric scaling laws linking biomass and rooting depth vary across ontogeny and functional groups in tropical dry forest lianas and trees

Chris M. Smith-Martin, Xiangtao Xu, David Medvigy, Stefan Schnitzer & Jennifer Powers
There are two theories about how allocation of metabolic products occurs. The allometric biomass partitioning theory (APT) suggests that all plants follow common allometric scaling rules. The optimal partitioning theory (OPT) predicts that plants allocate more biomass to the organ capturing the most limiting resource. We used whole-plant harvests of mature and juvenile tropical deciduous trees, evergreen trees, and lianas and model simulations to address the following knowledge gaps: 1) Do mature lianas comply with...

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  • University of Minnesota
  • Western Sydney University
  • University of California System
  • Duke University
  • Stanford University
  • Utah State University
  • University of Georgia
  • Smithsonian Tropical Research Institute
  • University of British Columbia
  • Michigan State University
  • University of Pennsylvania
  • University of Michigan–Ann Arbor
  • University of Toronto
  • University of Washington
  • Princeton University