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A next-generation marker genotyping platform(AmpSeq)in heterozygous crops:a case study for marker-assisted selection in grapevine

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Horticulture Research 2016年第1期3卷 302-313页

作者： Shanshan Yang Jonathan Fresnedo-Ramíre Minghui Wang Linda Cote peter schweitzer Paola Barba Elizabeth M Takacs Matthew Clark James Luby David C Manns Gavin Sacks Anna Katharine Mansfield Jason Londo Anne Fennell David Gadoury Bruce Reisch Lance Cadle-Davidson Qi Sun Horticulture Section School of Integrative Plant ScienceCornell UniversityGenevaNY 14456USA Bioinformatics Facility Cornell UniversityIthacaNY 14853USA Institute of Biotechnology Cornell UniversityIthacaNY 14853USA Plant Breeding and Genetics Section School of Integrative Plant ScienceCornell UniversityIthacaNY 14853USA Department of Horticultural Science University of MinnesotaSt PaulMN 55108USA Department of Food Science Cornell UniversityGenevaNY 14456USA Department of Food Science Cornell UniversityIthacaNY 14853USA USDA-ARS Grape Genetics Research Unit GenevaNY 14456USA Plant Science Department South Dakota State UniversityBrookingsSD 57007USA Plant Pathology and Plant-Microbe Biology Section School of Integrative Plant ScienceCornell UniversityGenevaNY 14456USA

Marker-assisted selection(MAS)is often employed in crop breeding programs to accelerate and enhance cultivar development,via selection during the juvenile phase and parental selection prior to ***-generation sequencing and its derivative technologies have been used for genome-wide molecular marker *** bridge the gap between marker development and MAS implementation,this study developed a novel practical strategy with a semi-automated pipeline that incorporates trait-associated single nucleotide polymorphism marker discovery,low-cost genotyping through amplicon sequencing(AmpSeq)and decision *** results document the development of a MAS package derived from genotyping-by-sequencing using three traits(flower sex,disease resistance and acylated anthocyanins)in grapevine *** vast majority of sequence reads(⩾99%)were from the targeted *** 380 individuals and up to 31 amplicons sequenced in each lane of MiSeq data,most amplicons(83 to 87%)had<10%missing data,and read depth had a median of 220–244×.Several strengths of the AmpSeq platform that make this approach of broad interest in diverse crop species include accuracy,flexibility,speed,high-throughput,low-cost and easily automated analysis.

关键词： crops breeding cultivar

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Analysis of Cartilage Creep Recovery Using a Highly Dynamic Closed-loop Test System

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Journal of Bionic Engineering 2018年第6期15卷 1057-1066页

作者： Josef Stolberg-Stolberg peter Foehr Iris Pflieger Lara Kuntz Constantin von Deimling Andreas Obermeier peter M. Prodinger Christian U. Grosse Rainer Burgkart Department of Orthopaedics and Sports Orthopaedics Klinikum rechts der Isar Technical University of Munich Munich 81675 Germany Department of Trauma Hand and Reconstructive Surgery University Hospital Muenster Albert-Schweitzer-Campus 1 Muenster 48149 Germany Chair of Non-destructive Testing Technical University of Munieh Munich 81245 Germany Department of Trauma Surgery Trauma Center Murnau Murnau 82418 Germany

The aim of this study was to analyze cartilage creep and creep recovery after static and cyclic loading. Up to now technical limitations have hindered the measurement of creep recovery. For this reason, we developed a closed loop micro creep and creep-recovery indentation test system with active force control. Bovine osteochondral explants were tested under static （110 kPa） and cyclic （100 cycles, 350 kPa/35 kPa, 1 Hz） loading conditions and subsequently creep recovery was measured. The cartilage thickness was determined using needle indentation. For static loading, the creep and creep-recovery rates were significantly different during the first 60 seconds （p 〈 0.05）. Cyclic loading was assessed for the medial and lateral patella and resulted in a physiological patellar cartilage strain of 7.7% ± 2.6% and 8.2% ± 2.7%, respectively. We recorded a creep recovery of 97.8% ±2.1% for the medial and 98.3% ± 2.4% for the lateral patella. The advantage of this study over earlier in vitro studies is that we recorded creep-recovery profiles with an actively controlled setup. This allowed us to analyze creep recovery immediately after removing the creep load, in contrast to MRI-based in vivo studies. In future, the presented method will enable us to quantify spatial variations within articular joints.

关键词： articular cartilage indentation creep recovery arthritis regenerative tissue

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Diagnostic imaging advances in murine models of colitis

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World Journal of Gastroenterology 2016年第3期22卷 996-1007页

作者： Markus Brückner Philipp Lenz Marcus M Mücke Faekah Gohar peter Willeke Dirk Domagk Dominik Bettenworth Department of Medicine B University Hospital of MünsterAlbert-Schweitzer-Campus 1D-48149 MünsterGermany Department of Paediatric Rheumatology and Immunology University Hospital of MünsterAlbert-Schweitzer-Campus 1D-48149 MünsterGermany Department of Medicine D University Hospital of MünsterAlbert-Schweitzer-Campus 1D-48149 MünsterGermany Department of Medicine I Josephs-Hospital WarendorfAcademic Teaching HospitalUniversity of MünsterAm Krankenhaus 2D-48231 WarendorfGermany

Inflammatory bowel diseases(IBD) such as Crohn's disease and ulcerative colitis are chronic-remittent inflammatory disorders of the gastrointestinal tract still evoking challenging clinical diagnostic and therapeutic situations. Murine models of experimental colitis are a vital component of research into human IBD concerning questions of its complex pathogenesis or the evaluation of potential new drugs. To monitor the course of colitis, to the present day, classical parameters like histological tissue alterations or analysis of mucosal cytokine/chemokine expression often require euthanasia of animals. Recent advances mean revolutionary noninvasive imaging techniques for in vivo murine colitis diagnostics are increasingly available. These novel and emerging imaging techniques not only allow direct visualization of intestinal inflammation, but also enable molecular imaging and targeting of specific alterations of the inflamed murine mucosa. For the first time, in vivo imaging techniques allow for longitudinal examinations and evaluation of intra-individual therapeutic response. This review discusses the latest developments in the different fields of ultrasound, molecularly targeted contrast agent ultrasound, fluorescence endoscopy, confocal laser endomicroscopy as well as tomographic imaging with magnetic resonance imaging, computed tomography and fluorescence-mediated tomography,discussing their individual limitations and potential future diagnostic applications in the management of human patients with IBD.

关键词： confocal laser endomicroscopy contrastenhanced ultrasound Dextran Sodium Sulphate colitis experimental colitis fluorescence imaging endoscopy Imaging Inflammatory bowel disease Tomography

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