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作者：Hawkes, Lucy; Kendall-Bar, Jessica
作者单位：University of Exeter; University of California System; University of California San Diego; Scripps Institution of Oceanography
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作者：Drake, John M.
作者单位：University System of Georgia; University of Georgia
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作者：McKnight, J. Chris; Bonnelycke, Eva-Maria; Balfour, Steve; Milne, Ryan; Moss, Simon E. W.; Armstrong, Holly C.; Downie, Caitlin; Hall, Ailsa J.; Kershaw, Joanna L.
作者单位：University of St Andrews; University of St Andrews
摘要：Marine mammals rely on maintaining sufficient blood oxygen levels while diving to prevent drowning. Generally, oxygen is cognitively imperceptible to mammals that instead sense rising carbon dioxide as a proxy for low oxygen. Not perceiving oxygen, however, is risky for diving mammals. We argue that any ability to alter dives based upon direct perception of oxygen should have been strongly selected for. We exposed diving seals to inhaled gas mixes that were experimentally altered to affect cir...
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作者：Basta, Lena P.; Joyce, Bradley W.; Posfai, Eszter; Devenport, Danelle
作者单位：Princeton University
摘要：For cells to polarize collectively along a tissue plane, asymmetrically localized planar cell polarity (PCP) complexes must form intercellular contacts between neighboring cells. Yet, it is unknown whether asymmetric segregation of PCP complexes requires cell-cell contact, or if cell autonomous, antagonistic interactions are sufficient for polarization. To test this, we generated mouse chimeras consisting of dual PCP-reporter cells mixed with unlabeled cells that cannot form PCP bridges. In th...
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作者：Pupillo, Guido; Brennen, Gavin
作者单位：Universites de Strasbourg Etablissements Associes; Universite de Strasbourg; Centre National de la Recherche Scientifique (CNRS); CNRS - Institute of Chemistry (INC); Macquarie University
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作者：Waltz, Florent; Righetto, Ricardo D.; Lamm, Lorenz; Salinas-Giege, Thalia; Kelley, Ron; Zhang, Xianjun; Obr, Martin; Khavnekar, Sagar; Kotecha, Abhay; Engel, Benjamin D.
作者单位：University of Basel; Universites de Strasbourg Etablissements Associes; Universite de Strasbourg; Centre National de la Recherche Scientifique (CNRS); Thermo Fisher Scientific; Max Planck Society; St Jude Children's Research Hospital
摘要：Mitochondria regenerate adenosine triphosphate (ATP) through oxidative phosphorylation. This process is carried out by five membrane-bound complexes collectively known as the respiratory chain, working in concert to transfer electrons and pump protons. The precise organization of these complexes in native cells is debated. We used in situ cryo-electron tomography to visualize the native structures and organization of several major mitochondrial complexes in Chlamydomonas reinhardtii cells. ATP...
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作者：Jaafar, Abd Al Karim; Rodriguez-Seijo, Andres
作者单位：Damascus University; Universidade de Vigo
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作者：Liang, Maowei; Yang, Qi; Chase, Jonathan M.; Isbell, Forest; Loreau, Michel; Schmid, Bernhard; Seabloom, Eric W.; Tilman, David; Wang, Shaopeng
作者单位：Peking University; Peking University; University of Minnesota System; German Research Foundation (DFG); German Centre for Integrative Biodiversity Research (iDiv); Martin Luther University Halle Wittenberg; University of Minnesota System; University of Minnesota Twin Cities; Centre National de la Recherche Scientifique (CNRS); University of Zurich; University of California System; University of California Santa Barbara
摘要：While both species richness and ecosystem stability increase with area, how these scaling patterns are linked remains unclear. Our theoretical and empirical analyses of plant and fish communities show that the spatial scaling of ecosystem stability is determined primarily by the scaling of species asynchrony, which is in turn driven by the scaling of species richness. In wetter regions, plant species richness and ecosystem stability both exhibit faster accumulation with area, implying potentia...
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作者：Couzin-Frankel, Jennifer
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作者：Fearnside, Philip M.; Filho, Walter Leal
作者单位：Manchester Metropolitan University; Hochschule Angewandte Wissenschaft Hamburg
