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971.
Heidi Goodrich-Blair Jean-Michel Ané James D. Bever Seth R. Bordenstein Monika Bright John M. Chaston Keith Clay Cameron R. Currie Angela E. Douglas Nicole Gerardo Maria J. Harrison Ruth E. Ley Margaret McFall-Ngai Arijit Mukherjee Bethany Rader Kenneth F. Raffa Edward G. Ruby Mary Beth Saffo Marc-André Selosse Justin L. Sonnenburg S. Patricia Stock Garret Suen Katarzyna Turnau Michael Udvardi Karen L. Visick Virginia M. Weis 《Symbiosis (Philadelphia, Pa.)》2010,51(1):1-12
Symbiosis, the intimate association between two or more organisms, is a fundamental component of biological systems. Our ability to understand the processes involved in the establishment and function of Symbiosis has critical consequences for the health of humans and the world we live in. For example, a deeper understanding of how legumes and insects have harnessed the nitrogen-fixing capacity of microbes can pave the way toward novel strategies to decrease fertilizer use. Also, using insect models to elucidate links between diet, gut microbiota, and toxin sensitivity not only has implications for biological control strategies, but also will lend insights into similar links in the human gut ecosystem. These types of ideas were presented and discussed at the 6th International Symbiosis Society Congress held in Madison, Wisconsin August, 2009. Over 300 participants from 20 countries attended the 7-day event, which featured cutting-edge symbiosis research from many different perspectives and disciplines. The conference was organized thematically, with oral sessions focused on Evolution, Ecology, Metabolism, the Host-Microbe Interface, Threats to Earth Systems, Symbiosis Models and the Human Microbiome, Viruses and Organelles, and Symbiosis Education. World-renowned scientists, post-doctoral fellows, and students were given the opportunity to describe their most recent discoveries. Session chairs provided overviews of their programs which highlight how the comparative analysis of different systems reveal common trends underlying symbiotic associations, what tools and theory are being developed that may be applied more broadly in symbiosis research, how symbiosis research contributing solutions to global issues such as emerging antibiotic resistance, a need for alternative energy sources, the pursuit of sustainable agriculture and natural resources, and how symbiotic systems are ideal for educating people about the fascinating natural world around us. The following paragraphs provide an overview of the research and discussions that took place during the congress. 相似文献
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Under appropriate experimental conditions, phytochrome controls leaflet closure in Albizzia by regulating differential turgor changes in motor cells of the pulvinule. Closure occurs when subepidermal dorsal cells expand and ventral cells become compressed; reopening involves the reverse changes. The internal cells surrounding the vascular core remain relatively unchanged during leaflet movement. Fine structural studies revealed several unusual features of the motor cells including: (1) fibrils oriented parallel to one another in the cytoplasmic matrix; (2) numerous spherosomes that appear to coalesce and enlarge to form vacuoles; and (3) a multivacuolate condition. 相似文献
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Seetharamaiyer Padmanabhan Ruth C. Lavin Paresh M. Thakker Jinqing Guo Lu Zhang Deke Moore Michael E. Perlman Cassandra Kirk Deborah Daly Kathy J. Burke-Howie Teresa Wolcott Suchitra Chari David Berlove James B. Fischer William F. Holt Graham J. Durant Robert N. McBurney 《Bioorganic & medicinal chemistry letters》2001,11(24):1945-3155
Solution-phase synthesis of various acylguanidine derivatives and the evaluation of a small library of compounds as potential sodium channel blockers are described. 相似文献
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Uwe Bornscheuer Oscar-Werner Reif Ralf Lausch Ruth Freitag Thomas Scheper Fragiskos N. Kolisis Uldrich Menge 《Biochimica et Biophysica Acta (BBA)/General Subjects》1994,1201(1):55-60
Commercial lipase (triacylglycerol lipase, EC 3.1.1.3) of Pseudomonas cepacia (Amano) has been purified to homogeneity by a single chromatography on phenyl Sepharose. The eluted lipase crystallized spontaneously at 4°C in the eluent, containing 58–69% 2-propanol. The yield of the lipase was 87–100% and the specific activity during the hydrolysis of triolein 5800 U/mg protein. This protein has a molecular weight of 34.1 kDa as analyzed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Its purity was determined by SDS-Page and capillary zone electrophoresis to be ≥ 99%. Immobilization on Sepharose increased its stability in organic solvents. This lipase of P. cepacia differs from that of other Pseudomonas strains in respect of substrate specificity and during crystallization. It exhibits a high stability in organic solvents and supercritical carbon dioxide. 相似文献
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