检索结果-南通市图书馆

Two haplotype-resolved genomes reveal important flower traits in bigleaf hydrangea(Hydrangea macrophylla)and insights into Asterid evolution

在线全文

学校读者我要写书评

暂无评论

Horticulture Research 2023年第12期10卷 45-57页

作者： Xingbo Wu Sheron A.Simpson Ramey C.Youngblood Xiaofen FLiu brian E.Scheffler Timothy A.Rinehart Lisa W.Alexander Amanda m.Hulse-Kemp Department of Environmental Horticulture Tropical Research and Education CenterUniversity of FloridaHomesteadFL 33031United States Genomics and Bioinformatics Research Unit USDA-ARSRaleighNC 27695United States Genomics and Bioinformatics Research Unit USDA-ARSStonevilleMS 38776United States Institute for Genomics Biocomputing and BiotechnologyMississippi State UniversityStarkvilleMS 39762United States Crop Production and Protection USDA-ARSBeltsvilleMD 20705United States Floral and Nursery Plants Research Unit U.S.National ArboretumUSDA-ARSMcMinnvilleTN 37110United States Department of Crop and Soil Sciences North Carolina State UniversityRaleighNC 27695United States

The Hydrangea genus belongs to the Hydrangeaceae family,in the Cornales order of flowering plants,which early diverged among the Asterids,and includes several species that are commonly used ornamental *** them,Hydrangea macrophylla is one of the most valuable species in the nursery trade,yet few genomic resources are available for this crop or closely related Asterid *** high-quality haplotype-resolved reference genomes of hydrangea cultivars‘Veitchii’and‘Endless Summer’[highest quality at 2.22 gigabase pairs(Gb),396 contigs,N5022.8 megabase pairs(mb)]were assembled and scaffolded into the expected 18 *** the newly developed high-quality reference genomes along with high-quality genomes of other related flowering plants,nuclear data were found to support a single divergence point in the Asterids clade where both the Cornales and Ericales diverged from the *** mapping with an F1 hybrid population demonstrated the power of linkage mapping combined with the new genomic resources to identify the gene for inflorescence shape,CYP78A5 located on chromosome 4,and a novel gene,BAm3 located on chromosome 17,for causing double *** developed in this study will not only help to accelerate hydrangea genetic improvement but also contribute to understanding the largest group of flowering plants,the Asterids.

关键词： Hydra traits resolved

IRX14 and IRX14-LIKE, Two Glycosyl Transferases Involved in Glucuronoxylan Biosynthesis and Drought Tolerance in Arabidopsis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

molecular Plant 2010年第5期3卷 834-841页

作者： brian D. Keppler Allan m. Showalter Department of Environmental and Plant Biology Molecular and Cellular Biology Program Ohio University 315 Porter Hall Athens OH 45701-2979 USA

IRX14 and IRX14-LIKE （IRX14L） are two closely related glycosyl transferases in the glycosyl transferase 43 （GT43） family of Arabidopsis. A T-DNA insertion mutant for IRX14 results in comparatively minor changes, such as irregular xylem, while a mutation for IRX14L results in no changes. However, an irx14 and irx14L double mutant severely affects growth and development, with the dwarf plants failing to produce an inflorescence stem. Plants that are homozygous for IRX14 but heterozygous for IRX14L （irx14 irx14L（±）） exhibit an intermediate phenotype, including noticeably smaller leaves, stems, and underdeveloped siliques. Additionally, the T-DNA insertion mutant for IRX14 was found to result in a drought-tolerant phenotype. Carbohydrate analysis of total cell wall extracts revealed a reduction in xylose for the irx14 and irx14 irx14L（±） mutants, consistent with a defect in glucuronoxylan biosynthesis. Immunolocalization of xylan with the Lm10 antibody revealed a loss of xylan in irx14 mutants and a further reduction in the irx14 irx14L（±） mutants. IRX14L likely functions redundantly with IRX14 in glucuronoxylan biosynthesis, with IRX14 having a more important role in the process.

关键词： Abiotic/environmental stress cell walls genetics Arabidopsis irregular xylem xylan.

Postnatal roles of glial cell line-derived neurotrophic factor family members in nociceptors plasticity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

生理学报 2008年第5期60卷 571-578页

作者： Sacha A. malin brian m. Davis Department of medicine University of Pittsburgh Pittsburgh PA 15261 USA Department of Neurobiology University of Pittsburgh Pittsburgh PA 15261 USA

The neurotrophin and glial cell line-derived neurotrophic factor(GDNF) family of growth factors have been extensively studied because of their proven ability to regulate development of the peripheral nervous *** neurotrophin family,which includes nerve growth factor(NGF),NT-3,NT4/5 and BDNF,is also known for its ability to regulate the function of adult sensory *** recently,little was known concerning the role of the GNDF-family(that includes GDNF,artemin,neurturin and persephin) in adult sensory neuron *** we describe recent data that indicates that the GDNF family can regulate sensory neuron function,that some of its members are elevated in inflammatory pain models and that application of these growth factors produces pain in *** we discuss how these two families of growth factors may converge on a single membrane receptor,TRPV1,to produce long-lasting hyperalgesia.

关键词：胶质细胞神经系统敏感性电位香草酸亚型1 TRPV1

INTRINSIC FLUORESCENCE CHANGES IN NERVE TERmINALS,EVOKED BY ACTION POTENTIALS,ARE mODULATED BY KREBS CYCLE SUBSTRATES

在线全文

学校读者我要写书评

暂无评论

Journal of Innovative Optical Health Sciences 2011年第2期4卷 209-214页

作者： PAUL KOSTERIN ANA LIA OBAID brian m.SALZBERG Department of Neuroscience University of Pennsylvania School of medicine Philadelphia PA 19104USA Department of Physiology University of Pennsylvania School of medicine Philadelphia PA 19104USA

Electrical stimulation of the mammalian neurohypophysial infundibular stalk evokes the entry of Nat and Ca^(2+) into the neurosecretory terminals during the action *** events,in turn,increase intracellular Ca^(2+) and activate NaK-and Ca-ATPases,prompting the mitochondria to increase oxidative phosphorylation which can be monitored by recording the changes in FAD and *** paper reflects our efforts to determine whether or not modulating the capacity of mitochondria to produce ATP,by changing the concentrations of two important substrates of the Krebs cycle of the nerve terminal mitochondria,pyruvate and glucose,has an effect on the intrinsicfluorescence changes triggered by action potential stimulation.

关键词： Fluorescence FAD NADH action potential metabolism

Adult neurogenesis from reprogrammed astrocytes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2020年第6期15卷 973-979页

作者： brian B.Griffiths Anvee Bhutani Creed m.Stary Department of Anesthesiology Pain & Perioperative Medicine Stanford University School of Medicine

The details of adult neurogenesis,including environmental triggers,region specificity,and species homology remain an area of intense *** or halting age-related cognitive dysfunction,or restoring neurons lost to disease or injury represent just a fraction of potential therapeutic *** neurons can derive from stem cells,pluripotent neural progenitor cells,or non-neuronal glial cells,such as *** must be epigenetically"reprogrammed"to become neurons,which can occur both naturally in vivo,and via artificial exogenous *** neural progenitor cells are localized to a few neurogenic zones in the adult brain,astrocytes populate almost every brain *** this review,we will summarize recent research into neurogenesis that arises from conversion of post-mitotic astrocytes,detail the genetic and epigenetic pathways that regulate this process,and discuss the possible clinical relevance in supplementing stem-cell neurogenic therapies.

关键词： astrocyte brain dedifferentiation development disease glia injury neurogenesis

Deterministic Dual Control of Phase Competition in Strained BiFeO_(3):A multiparametric Structural Lithography Approach

在线全文

学校读者我要写书评

暂无评论

Nanomanufacturing and metrology 2022年第1期5卷 60-66页

作者： Nathan Black David Edwards Niall Browne Joseph G.m.Guy Niyorjyoti Sharma Kristina m・Holsgrove Aaron B.Naden Raymond G.P.mcQuaid brian J.Rodriguez Amit Kumar School of maths and Physics Queen's University BelfastBelfast BT7 INNUK School of Chemistry University of St.AndrewsSt Andrews KY169STUK School of Physics University College DublinBelfieldDublin 4Ireland

The realization of a mixed-phase microstructure in strained BiFeO_(3)(BFO)thin films has led to numerous novel effects derived from the coexistence of the tetragonal-like monoclinic phase(T phase)and rhombohedral-like monoclinic phase(R phase).Strong strain and polarization diiferences between the phases should result in a high level of transformation plasticity,which enables the continuous alteration of the relative proportion of R and T states in response to external *** the potential for utilizing such plasticity to control mixed-phase populations under external stimuli is evident,direct experi・mental evidence backed by equilibrium predictions has not yet been fully *** we demonstrate deterministic control of mixed-phase populations in an epitaxially strained BFO thin film through the application of localized stresses and electric fields in a reversible manne匚The results illustrate and rationalize deterministic control of mixed phases in strained BFO films,which could be crucial in tuning their functional *** findings also highlight a new multiparametric technique in the scanning probe lithography toolbox based on tip-assisted electric and strain field manipulation of functional properties that might find application beyond the ferroelectric domain and structural phase lithography.

关键词： Phase competition Ferroelectric Stress Lithography

Chronic exposure to high-density polyethylene microplastic through feeding alters the nutrient metabolism of juvenile yellow perch (Perca flavescens)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Animal Nutrition 2022年第2期9卷 143-158页

作者： Xing Lu Dong-Fang Deng Fei Huang Fabio Casu Emma Kraco Ryan J.Newton merry Zohn Swee J.Teh Aaron m.Watson brian Shepherd Ying ma mahmound A.O.Dawood Lorena m.Rios mendoza School of Freshwater Sciences University of WisconsinMilwaukeeWI 53204USA South Carolina Department of Natural Resources CharlestonSC 29412USA USDA/ARS/School of Freshwater Sciences University of WisconsinMilwaukeeWI 53204USA School of Veterinary medicine Department of AnatomyPhysiologyand Cell BiologyUniversity of CaliforniaDavisCA 95616USA Department of Natural Sciences Marine Resources Research InstituteUniversity of WisconsinSuperiorWI 54880USA Yangtze River Fisheries Research Institute Chinese Academy of Fishery SciencesWuhanChina Fisheries College Jimei UniversityXiamenChina. Faculty of Agriculture Kafrelsheikh UniversityKafr El-SheikhEgypt.

microplastics are emergent contaminants threatening aquatic organisms including aquacultured *** study investigated the effects of high-density polyethylene(HDPE,100 to 125 mm)on yellow perch(Perca flavescens)based on integrative evaluation including growth performance,nutritional status,nutrient metabolism,fish health,and gut microbial *** test diets(0,1,2,4,or 8 g HDPE/100 g diet)containing 41%protein and 10.5%lipid were fed to juvenile perch(average body weight,25.9±0.2 g;n=15)at a feeding rate of 1.5%to 2.0%body weight *** feeding trial was conducted in a flow-through water system for 9 wk with 3 tanks per treatment and 15 yellow perch per *** mortality or HDPE accumulation in the fish was found in any *** gain and condition factor of fish were not significantly impacted by HDPE(P>0.05).Compared to the control group,fish fed the 8%HDPE diet had significantly decreased levels of protein and ash(Pmatic index value,hepatocyte size,and liver glycogen level were increased,but lipid content was reduced in the liver *** to the control treatment,fish fed the 8%HDPE diet had significant accumulations of total bile acids and different metabolism pathways such as bile acid biosynthesis,pyruvate metabolism,and carnitine *** enterocyte necrosis was documented in the foregut of fish fed the 2%or 8%HDPE diet;and significant cell sloughing was observed in the midgut and hindgut of fish fed the 8%HDPE *** fed the 2%HDPE diet harbored different microbiota communities compared to the control *** study demonstrates that HDPE ranging from 100 to 125 mm in feed can be evacuated by yellow perch with no impact on ***,dietary exposure to HDPE decreased whole fish nutrition quality,altered nutrient metabolism and the intestinal histopathology as well as microbiota community of yellow *** results indicate that extende

关键词： Dietary exposure Intestinal microbiota Liver metabolomics microplastics Nutrient composition Yellow perch

Quantum photonics: feature introduction

在线全文

学校读者我要写书评

暂无评论

Photonics Research 2019年第12期7卷 I0001-I0002页

作者： XIAN-mIN JIN m.S.KIm brian J.SmITH School of Physics and Astronomy and State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong UniversityShanghai 200240China QOLS Blackett LaboratoryImperial College LondonLondon SW72AZUK Department of Physics and Oregon Center for Optical Molecularand Quantum ScienceUniversity of OregonEugeneOregon 97403USA

Photons,the individual quanta of the light field,are what the science of quantum photonics is dedicatedly *** manipulation and coherent control of photons in quantum photonics enables the exploration of various quantum phenomena of high fundamental *** the meantime,due to the fast speed and a lack of the interaction with the environment,photons are now regarded as a promising platform for the emerging quantum information processing(QIP)***,there is a growing number of works on quantum computing,quantum communication,and quantum metrology that are solidly based on the techniques of quantum photonics.

关键词： quantum coherent enable

Geological Evidence for the Operation of Plate Tectonics throughout the Archean:Records from Archean Paleo-Plate Boundaries

在线全文

学校读者我要写书评

暂无评论

Journal of Earth Science 2018年第6期29卷 1291-1303页

作者： Timothy m.Kusky brian F.Windley Ali Polat State Key Laboratory for Geological Processes and mineral Resources China University of Geosciences Center for Global Tectonics School of Earth SciencesChina University of Geosciences Department of Geology University of Leicester Department of Earth and Environmental Sciences University of Windsor

Plate tectonics describes the horizontal motion of rigid lithospheric plates away from midoceanic ridges and parallel to transforms, towards deep-sea trenches, where the oceanic lithosphere is subducted into the mantle. This process is the surface expression of modern-day heat loss from Earth. One of the biggest questions in Geosciences today is ＂when did plate tectonics begin on Earth＂ with a wide range of theories based on an equally diverse set of constraints from geology, geochemistry, numerical modeling, or pure speculation. In this contribution, we turn the coin over and ask ＂when was the last appearance in the geological record for which there is proof that plate tectonics did not operate on the planet as it does today＂. We apply the laws of uniformitarianism to the rock record to ask how far back in time is the geologic record consistent with presently-operating kinematics of plate motion, before which some other mechanisms of planetary heat loss may have been in operation. Some have suggested that evidence shows that there was no plate tectonics before 800 ma ago, others sometime before 1.8–2.7 Ga, or before 2.7 Ga. Still others recognize evidence for plate tectonics as early as 3.0 Ga, 3.3–3.5 Ga, the age of the oldest rocks, or in the Hadean before 4.3 Ga. A key undiscussed question is： why is there such a diversity of opinion about the age at which plate tectonics can be shown to not have operated, and what criteria are the different research groups using to define plate tectonics, and to recognize evidence of plate tectonics in very old rocks？ Here, we present and evaluate data from the rock record, constrained by relevant geochemical-isotopic data, and conclude that the evidence shows indubitably that plate tectonics has been operating at least since the formation of the oldest rocks, albeit with some differences in processes, compositions, and products in earlier times of higher heat generation and mantle temperature, weaker oceanic lithosphere, hotte

关键词： Archean tectonics ophiolite OPS(oceanic plate stratigraphy) orogeny