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作者：Pezzini, Daniela; Taylor, Katherine L.; Reisig, Dominic D.; Fritz, Megan L.
作者单位：Bayer AG; Bayer CropScience; North Carolina State University; University System of Maryland; University of Maryland College Park
摘要：The evolution of pest resistance to management tools reduces productivity and results in economic losses in agricultural systems. To slow its emergence and spread, monitoring and prevention practices are implemented in resistance management programs. Recent work suggests that genomic approaches can identify signs of emerging resistance to aid in resistance management. Here, we empirically examined the sensitivity of genomic monitoring for resistance management in transgenic Bt crops, a globall...
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作者：Chareyre, Sylvia; Li, Xuesong; Anjuwon, Brandon R.; Updegrove, Taylor B.; Clifford, Sarah; Brogan, Anna P.; Su, Yijun; Zhang, Lixia; Chen, Jiji; Shroff, Hari; Ramamurthia, Kumaran S.
作者单位：National Institutes of Health (NIH) - USA; NIH National Cancer Institute (NCI); National Institutes of Health (NIH) - USA; NIH National Institute of Biomedical Imaging & Bioengineering (NIBIB); Howard Hughes Medical Institute; National Institutes of Health (NIH) - USA
摘要：When faced with starvation, the bacterium Bacillus subtilis transforms itself into a dormant cell type called a spore. Sporulation initiates with an asymmetric division event, which requires the relocation of the core divisome components FtsA and FtsZ, after which the sigma factor aF is exclusively activated in the smaller daughter cell. Compartment- specific activation of aF requires the SpoIIE phosphatase, which displays a biased localization on one side of the asymmetric division septum and...
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作者：Chen, Yang; Feng, Hui; Li, Jia; Liu, Bin; Jiang, Chao; Liu, Yong; Fang, Qihong; Liaw, Peter K.
作者单位：Hunan University; Central South University; University of Tennessee System; University of Tennessee Knoxville
摘要：Multi- principal element alloys (MPEAs) exhibit outstanding strength attributed to the complex dislocation dynamics as compared to conventional alloys. Here, we develop an atomic- lattice- distortion- dependent discrete dislocation dynamics framework consisted of random field theory and phenomenological dislocation model to investigate the fundamental deformation mechanism underlying massive dislocation motions in body- centered cubic MPEA. Amazingly, the turbulence of dislocation speed is ide...
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作者：Kelly, Jeffrey F.; Cimprich, Paula M.
作者单位：University of Oklahoma System; University of Oklahoma - Norman
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作者：Muttoni, Giovanni; Kent, Dennis V.
作者单位：University of Milan; Columbia University; Rutgers University System; Rutgers University New Brunswick
摘要：Two recently published analyses make cases for severe bottlenecking of human populations occurring in the late Early Pleistocene, one case at about 0.9 Mya based on a genomic analysis of modern human populations and the low number of hominin sites of this age in Africa and the other at about 1.1 Mya based on an age inventory of sites of hominin presence in Eurasia. Both models point to climate change as the bottleneck trigger, albeit manifested at very different times, and have implications fo...
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作者：Caggia, Veronica; Waelchli, Jan; Deslandes-Herold, Gabriel; Mateo, Pierre; Robert, Christelle A. M.; Guan, Hang; Bigalke, Moritz; Spielvogel, Sandra; Mestrot, Adrien; Schlaeppi, Klaus; Erb, Matthias
作者单位：University of Bern; University of Basel; University of Bern; Technical University of Darmstadt; University of Kiel; Helmholtz Association; Research Center Julich
摘要：By releasing specialized metabolites, plants modify their environment. Whether and how specialized metabolites protect plants against toxic levels of trace elements is not well understood. We evaluated whether benzoxazinoids, which are released into the soil by major cereals, can confer protection against arsenic toxicity. Benzoxazinoid-producing maize plants performed better in arsenic- contaminated soils than benzoxazinoid- deficient mutants in the greenhouse and the field. Adding benzoxazin...
