107 Works

Building consensus for ambitious climate action through the World Climate Simulation

Juliette Rooney-Varga, Margaret Hensel, Carolyn McCarthy, Karen McNeal, Nicole Norfles, Kenneth Rath, Audrey Schnell, John Sterman, Juliette N. Rooney‐Varga, Audrey H. Schnell & John D. Sterman
Sociopolitical values are an important driver of climate change beliefs, attitudes, and policy preferences. People with 'individualist-hierarchical' values favor individual freedom, competition, and clearly defined social hierarchies, while communitarian-egalitarians value interdependence and equality across gender, age, heritage, and ethnicity. In the US, individualist-hierarchs generally perceive less risk from climate change and express lower support for actions to mitigate it than communitarian-egalitarians. Exposure to scientific information does little to change these views. Here, we ask if...

Data from: Genetic evidence for landscape effects on dispersal in the army ant Eciton burchellii

Thomas W. Soare, Anjali Kumar, Kerry A. Naish & Sean O'Donnell
Inhibited dispersal, leading to reduced gene flow, threatens populations with inbreeding depression and local extinction. Fragmentation may be especially detrimental to social insects because inhibited gene flow has important consequences for cooperation and competition within and among colonies. Army ants have winged males and permanently wingless queens; these traits imply male-biased dispersal. However, army ant colonies are obligately nomadic and have the potential to traverse landscapes. Eciton burchellii, the most regularly nomadic army ant, is...

Data from: Genome-wide sensitivity analysis of the microsymbiont Sinorhizobium meliloti to symbiotically important, defensin-like host peptides

Markus F. F. Arnold, Mohammed Shabab, Jon Penterman, Kevin L. Boehme, Joel S. Griffitts & Graham C. Walker
The model legume species Medicago truncatula expresses more than 700 nodule-specific cysteine-rich (NCR) signaling peptides that mediate the differentiation of Sinorhizobium meliloti bacteria into nitrogen-fixing bacteroids. NCR peptides are essential for a successful symbiosis in legume plants of the inverted-repeat-lacking clade (IRLC) and show similarity to mammalian defensins. In addition to signaling functions, many NCR peptides exhibit antimicrobial activity in vitro and in vivo. Bacterial resistance to these antimicrobial activities is likely to be important...

Data from: Epigenetic memory via concordant DNA methylation is inversely correlated to developmental potential of mammalian cells

Minseung Choi, Diane P. Genereux, Jamie Goodson, Haneen Al-Azzawi, Shannon Q. Allain, Noah Simon, Stan Palasek, Carol B. Ware, Chris Cavanaugh, Daniel G. Miller, Winslow C. Johnson, Kevin D. Sinclair, Reinhard Stöger & Charles D. Laird
In storing and transmitting epigenetic information, organisms must balance the need to maintain information about past conditions with the capacity to respond to information in their current and future environments. Some of this information is encoded by DNA methylation, which can be transmitted with variable fidelity from parent to daughter strand. High fidelity confers strong pattern matching between the strands of individual DNA molecules and thus pattern stability over rounds of DNA replication; lower fidelity...

Data from: Natural epigenetic polymorphisms lead to intraspecific variation in Arabidopsis gene imprinting

Mary Gehring, Daniela Pignatta, Robert M. Erdmann, George W. Bell, Elias Scheer & Colette L Picard
Imprinted gene expression occurs during seed development in plants and is associated with differential DNA methylation of parental alleles, particularly at proximal transposable elements (TEs). Imprinting variability could contribute to observed parent-of-origin effects on seed development. We investigated intraspecific variation in imprinting, coupled with analysis of DNA methylation and small RNAs, among three Arabidopsis strains with diverse seed phenotypes. The majority of imprinted genes were parentally biased in the same manner among all strains. However,...

Data from: Migration strategy affects avian influenza dynamics in mallards (Anas platyrhynchos)

Nichola J. Hill, John Y. Takekawa, Joshua T. Ackerman, Keith A. Hobson, Garth Herring, Carol J. Cardona, Jonathan A. Runstadler & Walter M. Boyce
Studies of pathogen transmission typically overlook that wildlife hosts can include both migrant and resident populations when attempting to model circulation. Through the application of stable isotopes in flight feathers, we estimated the migration strategy of mallards (Anas platyrhynchos) - resident, intermediate-distance migrant or long-distance migrant, occurring on California wintering grounds. Our study demonstrates that mallards, a principal host of avian influenza virus (AIV) in nature, contribute differently to virus gene flow depending on migration...

Biomimetic robotic skin implemented with hydrogel-elastomer hybrids and tomographic imaging methods

Kyungseo Park, Jung Kim, MinJin Yang, Junhwi Cho, Hyunwoo Yuk & Hyosang Lee
Human skin perceives physical stimuli applied to the body and mitigates the risk of physical interaction through its soft and resilient mechanical properties. Social robots would benefit from whole-body robotic skin (or tactile sensors) resembling human skin in realizing a safe, intuitive, and contact-rich interaction with humans. However, existing soft tactile sensors show several drawbacks (complex structure, poor scalability, and fragility), which limit their application in whole-body robotic skin. Here, we introduce biomimetic robotic skin...

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