检索结果-南通市图书馆

The genetic basis of the leafy seadragon's unique camouflage morphology and avenues for its efficient conservation derived from habitat modeling

引用

Science China(Life Sciences) 2023年第6期66卷 1213-1230页

作者： Meng Qu Yingyi Zhang Zexia Gao Zhixin Zhang Yali Liu Shiming Wan Xin Wang Haiyan Yu Huixian Zhang Yuhong Liu Ralf Schneider axel meyer Qiang Lin CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology South China Sea Institute of OceanologyChinese Academy of SciencesSouthern Marine Science and Engineering Guangdong Laboratory(GMLGuangzhou)Guangzhou511458China Sanya Institute of Oceanology SCSIOSanya572000China University of Chinese Academy of Sciences Beijing100049China College of Fisheries Key Lab of Freshwater Animal BreedingMinistry of AgricultureHuazhong Agricultural UniversityWuhan430070China Marine Evolutionary Ecology Zoological InstituteKiel University24118KielGermany Department of Biology University of Konstanz78464KonstanzGermany Global Ocean and Climate Research Center South China Sea Institute of OceanologyGuangzhou510301China

The leafy seadragon certainly is among evolution’s most“beautiful and wonderful”species aptly named for its extraordinary camouflage mimicking its coastal seaweed habitat.However,limited information is known about the genetic basis of its phenotypes and conspicuous camouflage.Here,we revealed genomic signatures of rapid evolution and positive selection in core genes related to its camouflage,which allowed us to predict population dynamics for this species.Comparative genomic analysis revealed that seadragons have the smallest olfactory repertoires among all ray-finned fishes,suggesting adaptations to the highly specialized habitat.Other positively selected and rapidly evolving genes that serve in bone development and coloration are highly expressed in the leaf-like appendages,supporting a recent adaptive shift in camouflage appendage formation.Knock-out of bmp6 results in dysplastic intermuscular bones with a significantly reduced number in zebrafish,implying its important function in bone formation.Global climate change-induced loss of seagrass beds now severely threatens the continued existence of this enigmatic species.The leafy seadragon has a historically small population size likely due to its specific habitat requirements that further exacerbate its vulnerability to climate change.Therefore,taking climate change-induced range shifts into account while developing future protection strategies.

关键词： seadragon camouflage olfactory receptor global climate change habitat suitability conservation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Enlarged fins of Tibetan catfish provide new evidence of adaptation to high plateau

引用

Science China(Life Sciences) 2023年第7期66卷 1554-1568页

作者： Liandong Yang Ning Sun Honghui Zeng Ying Wang Wenjun Chen Zufa Ding Yang Liu Jing Wang Minghui Meng Yanjun Shen Jingliang Kang Xiuhui Ma Wenqi Lv Juan Chen axel meyer Baocheng Guo Shunping He State Key Laboratory of Freshwater Ecology and Biotechnology Institute of HydrobiologyChinese Academy of SciencesWuhan430072China Key Laboratory of Zoological Systematics and Evolution Institute of ZoologyChinese Academy of SciencesBeijing100101China Academy of Plateau Science and Sustainability Qinghai Normal UniversityXining810016China Hubei Engineering Research Center for Protection and Utilization of Special Biological Resources in the Hanjiang River Basin School of Life SciencesJianghan UniversityWuhan430056China State Key Laboratory of Genetic Resources and Evolution Kunming Institute of ZoologyChinese Academy of SciencesKunming650223China University of Chinese Academy of Sciences Beijing100049China Department of Biology University of Konstanz78457KonstanzGermany Center for Excellence in Animal Evolution and Genetics Chinese Academy of SciencesKunming650223China

The uplift of the Tibetan Plateau significantly altered the geomorphology and climate of the Euroasia by creating large mountains and rivers.Fishes are more likely to be affected relative to other organisms,as they are largely restricted to river systems.Faced with the rapidly flowing water in the Tibetan Plateau,a group of catfish has evolved greatly enlarged pectoral fins with more numbers of fin-rays to form an adhesive apparatus.However,the genetic basis of these adaptations in Tibetan catfishes remains elusive.In this study,we performed comparative genomic analyses based on the chromosome-level genome of Glyptosternum maculatum in family Sisoridae and detected some proteins with conspicuously high evolutionary rates in particular in genes involved in skeleton development,energy metabolism,and hypoxia response.We found that the hoxd12a gene evolved faster and a loss-of-function assay of hoxd12a supports a potential role for this gene in shaping the enlarged fins of these Tibetan catfishes.Other genes with amino acid replacements and signatures of positive selection included proteins involved in low temperature(TRMU)and hypoxia(VHL)responses.Functional assays reveal that the G.maculatum TRMU allele generates more mitochondrial ATP than the ancestral allele found in low-altitude fishes.Functional assays of VHL alleles suggest that the G.maculatum allele has lower transactivation activity than the low-altitude forms.These findings provide a window into the genomic underpinnings of physiological adaptations that permit G.maculatum to survive in the harsh environment of the Tibetan Himalayas that mirror those that are convergently found in other vertebrates such as humans.

关键词： Glyptosternum maculatum enlarged fins adaptation Tibetan Plateau

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Asymmetry in genitalia is in sync with lateralized mating behavior but not with the lateralization of other behaviors

引用

Current Zoology 2020年第1期66卷 71-81页

作者： Julian TORRES-DOWDALL Sina J.ROMETSCH Gaston AGUILERA Guillermo GOYENOLA axel meyer Department of Biology University of KonstanzKonstanzGermany Zukunftskolleg University of KonstanzKonstanzGermany Hector Fellow Academy KarlsruheGermany Unidad Ejecutora Lillo(CONICET) Fundacion Miguel LilloTucumanArgentina Departamento de Ecologia y Gestion Ambiental Centro Universitario Regional Del EsteUniversidad de la RepublicaUruguay

Asymmetries in bilateral organisms attract a lot of curiosity given that they are conspicuous departures from the norm.They allow the investigation of the integration at different levels of biological organization.Here we study whether and how behavioral and asymmetrical anatomical traits coevolved and work together.We ask if asymmetry is determined locally for each trait or at a whole individual level in a species bearing conspicuous asymmetrical genitalia.Asymmetric genitalia evolved in many species;however,in most cases the direction of asymmetry is fixed.Therefore,it has been rarely determined if there is an association between the direction of asymmetry in genitalia and other traits.In onesided livebearer fish of the genus Jenynsia(Cyprinodontiformes,Anablepidae),the anal fin of males is modified into a gonopodium,an intromittent organ that serves to inseminate females.The gonopodium shows a conspicuous asymmetry,with its tip bending either to the left or the right.By surveying 13 natural populations of Jenynsia lineata,we found that both genital morphs are equally common in wild populations.In a series of experiments in a laboratory population,we discovered asymmetry and lateralization for multiple other traits;yet,the degree of integration varied highly among them.Lateralization in exploratory behavior in response to different stimuli was not associated with genital morphology.Interestingly,the direction of genital asymmetry was positively correlated with sidedness of mating preference and the number of neuromasts in the lateral line.This suggests integration of functionally linked asymmetric traits;however,there is no evidence that asymmetry is determined at the whole individual level in our study species.

关键词： antisymmetry behavioral lateralization Jenynsia iineata Jenynsia multidentata phenotypic integration

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Metabolic reprogramming by Syntenin-1 directs RA FLS and endothelial cell-mediated inflammation and angiogenesis

引用

Cellular & Molecular Immunology 2024年第1期21卷 33-46页

作者： Anja meyer Stephanie R.Zack Wes Nijim Adel Burgos Vishwa Patel Brian Zanotti Michael V.Volin M.Asif Amin Myles J.Lewis Costantino Pitzalis Shiva Arami Joseph A.Karam Nadera J.Sweiss Shiva Shahrara Jesse Brown VA Medical Center ChicagoILUSA Department of Medicine Division of RheumatologyThe University of Illinois at ChicagoChicagoILUSA Department of Microbiology and Immunology Midwestern UniversityDowners GroveILUSA Division of Rheumatology and Clinical Autoimmunity Center of Excellence University of MichiganAnn ArborMIUSA Centre for Experimental Medicine and Rheumatology William Harvey Research InstituteBarts and The London School of Medicine and DentistryQueen Mary University of LondonLondonUnited Kingdom Centre for Experimental Medicine&Rheumatology William Harvey Research InstituteQueen Mary University of London and Barts NIHR BRC&NHS TrustLondonUK Department of Biomedical Sciences Humanitas Universityand Humanitas Research HospitalMilanItaly Department of Orthopedic Surgery the University of Illinois at ChicagoChicagoILUSA

A novel rheumatoid arthritis(RA)synovial fluid protein,Syntenin-1,and its receptor,Syndecan-1(SDC-1),are colocalized on RA synovial tissue endothelial cells and fibroblast-like synoviocytes(FLS).Syntenin-1 exacerbates the inflammatory landscape of endothelial cells and RA FLS by upregulating transcription of IRF1/5/7/9,IL-1β,IL-6,and CCL2 through SDC-1 ligation and HIF1α,or mTOR activation.Mechanistically,Syntenin-1 orchestrates RA FLS and endothelial cell invasion via SDC-1 and/or mTOR signaling.In Syntenin-1 reprogrammed endothelial cells,the dynamic expression of metabolic intermediates coincides with escalated glycolysis along with unchanged oxidative factors,AMPK,PGC-1α,citrate,and inactive oxidative phosphorylation.Conversely,RA FLS rewired by Syntenin-1 displayed a modest glycolytic-ATP accompanied by a robust mitochondrial-ATP capacity.The enriched mitochondrial-ATP detected in Syntenin-1 reprogrammed RA FLS was coupled with mitochondrial fusion and fission recapitulated by escalated Mitofusin-2 and DRP1 expression.We found that VEGFR1/2 and Notch1 networks are responsible for the crosstalk between Syntenin-1 rewired endothelial cells and RA FLS,which are also represented in RA explants.Similar to RA explants,morphological and transcriptome studies authenticated the importance of VEGFR1/2,Notch1,RAPTOR,and HIF1αpathways in Syntenin-1 arthritic mice and their obstruction in SDC-1 deficient animals.Consistently,dysregulation of SDC-1,mTOR,and HIF1αnegated Syntenin-1 inflammatory phenotype in RA explants,while inhibition of HIF1αimpaired synovial angiogenic imprint amplified by Syntenin-1.In conclusion,since the current therapies are ineffective on Syntenin-1 and SDC-1 expression in RA synovial tissue and blood,targeting this pathway and its interconnected metabolic intermediates may provide a novel therapeutic strategy.

关键词： Syntenin-1 Syndecan-1 RA FLS RA explants immunometabolism

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Genomic basis of evolutionary adaptation in a warm-blooded fish

引用

The Innovation 2022年第1期3卷 22-30页

作者： Xin Wang Meng Qu Yali Liu Ralf F.Schneider Yue Song Zelin Chen Hao Zhang Yanhong Zhang Haiyan Yu Suyu Zhang Dongxu Li Geng Qin Shaobo Ma Jia Zhong Jianping Yin Shuaishuai Liu Guangyi Fan axel meyer Dazhi Wang Qiang Lin CAS Key Laboratory of Tropical Marine Bio-resources and Ecology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Marine Evolutionary Ecology GEOMAR Helmholtz Centre for Ocean Research Kiel24105 KielGermany BGI-Qingdao Qingdao 266555China State Key Laboratory of Marine Environmental Science/College of the Environment and Ecology Xiamen UniversityXiamen 361102China BGI-Shenzhen Shenzhen 518083China Department of Biology University of KonstanzKonstanz 78464Germany University of the Chinese Academy of Sciences Beijing 100101China Laboratory for Marine Fisheries Science and Food Production Processes Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China

Few fishes have evolved elevated body temperatures compared with ambient temperatures,and only in opah(Lampris spp)is the entire body affected.To understand the molecular basis of endothermy,we analyzed the opah genome and identified 23 genes with convergent amino acid substitutions across fish,birds,and mammals,including slc8b1,which encodes the mitochondrial Na+/Ca2+exchanger and is essential for heart function andmetabolic heat production.Among endothermic fishes,44 convergent genes with suggestive metabolic functions were identified,such as glrx3,encoding a crucial protein for hemoglobin maturation.Numerous genes involved in the production and retention of metabolic heat were also found to be under positive selection.Analyses of opah’s unique inner-heat-producing pectoral muscle layer(PMI),an evolutionary key innovation,revealed that many proteins were co-opted from dorsal swimming muscles for thermogenesis and oxidative phosphorylation.Thus,the opah genome provides valuable resources and opportunities to uncover the genetic basis of thermal adaptations in fish.

关键词： evolutionary fish convergent

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

乐活健康

引用

空中英语教室（高级版．彭蒙惠英语） 2024年第1期 10-11,39,40页

作者： Patrick McCreless John meyer 不详

03一名医生从自己的中风体验中学到的三件事或许能拯救你的生命当朱利安·金医生正在示范一个小型外科手术时,他走路开始出现异常。他自己没有注意到,但手术室里有人注意到了“当时我脑出血了……和高血压有关,”金医生说,“我甚至不知... 详细信息

03一名医生从自己的中风体验中学到的三件事或许能拯救你的生命当朱利安·金医生正在示范一个小型外科手术时,他走路开始出现异常。他自己没有注意到,但手术室里有人注意到了“当时我脑出血了……和高血压有关,”金医生说,“我甚至不知道我有高血压。”

关键词：外科手术高血压手术室脑出血医生朱利安

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

移动摩擦焊

引用

现代制造 2004年第28期 30-31页

作者： axel meyer

利用移动摩擦焊工艺技术可以在铝合金的熔点温度以下对铝合金材料进行焊接。移动摩擦焊接技术主要适用于平面直焊缝的焊接;适合于在生产成本非常高的产品中使用。它最大可以节省生产成本达60％,提高生产效率达40％。

关键词：动摩擦焊工熔点温度焊缝焊接技术铝合金材料工艺技术生产成本移动产品

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Ytterbium Intercalation of Epitaxial Graphene Grown on Si-Face SiC

引用

Graphene 2013年第2期2卷 66-73页

作者： Somsakul Watcharinyanon Leif I. Johansson Chao Xia Jan Ingo Flege axel meyer Jens Falta Chariya Virojanadara Department of Physics Chemistry and Biology Linkoping University Linkoping Sweden Institute of Solid State Physics University of Bremen Bremen Germany

The rare-earth metal, ytterbium (Yb), was deposited on graphene grown on Si-face SiC, kept at room temperature. Yb was not found to intercalate, destroy or dope the graphene layer before subsequent heating, unlike alkali metals such as Li and Na. Our photoemission results reveal that heating to 300oC promotes Yb intercalation into the graphene-substrate interface. Real-time low energy electron microscopy (LEEM) measurements indicated intercalation to start at a sample temperature of around 220oC. In the intercalation process, Yb penetrates through the graphene and buffer layer and forms bonds to the silicon in the topmost SiC substrate bilayer, as indicated by the shifted components observed in the C 1s, Si 2p, and Yb 4f spectra. The Yb intercalation decouples the buffer layer from the substrate and transforms it into another graphene layer as manifested by the absence of buffer layer spots in the μ-LEED pattern and the appearance of an additional π band in the ARPES spectra, respectively. Moreover, the observed shift of the Dirac point down from the Fermi level by 1.9 eV indicates electron doping of the graphene layer upon Yb intercalation. The Yb intercalated graphene sample was found to be thermodynamically stable up to temperatures around 700oC.

关键词： Epitaxial Graphene SiC Ytterbium Intercalation PES ARPES LEEM

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

MLMT与MLST在新生隐球菌基因分型中的应用研究

引用

贵州医科大学学报 2024年第1期49卷 84-89页

作者：朱键曹佳非康颖倩三上襄 Wieland meyer 贵阳市第二人民医院&贵州医科大学附属金阳医院消化内科贵州贵阳550081 贵州医科大学附属医院消化内科贵州贵阳550004 贵州医科大学研究生院贵州贵阳550004 千葉大学医学真菌研究中心日本千葉县260-8673 悉尼大学Westmead医学研究所澳大利亚悉尼NSW2145

目的探讨多位点微卫星灶分型(MLMT)和多位点序列分型(MLST)在新生隐球菌(C.neoformans)基因分型中的应用。方法提取22株来源于国内及日本已明确为新生隐球菌的菌株DNA,经MLMT及MLST相应位点的引物进行扩增、测序;计算各微卫星灶(CNG1... 详细信息

目的探讨多位点微卫星灶分型(MLMT)和多位点序列分型(MLST)在新生隐球菌(C.neoformans)基因分型中的应用。方法提取22株来源于国内及日本已明确为新生隐球菌的菌株DNA,经MLMT及MLST相应位点的引物进行扩增、测序;计算各微卫星灶(CNG1、CNG2及CNG3)序列中简单重复序列的重复数,确定菌株MLMT的基因型;将本研究菌株的MLST中各位点序列和网上数据库相应序列进行对比,获取该菌株的MLST基因型;比较两种方法在分型中分辨能力。结果在22株菌中,有16株的基因型为MLMT17/MLST5(16/22,72.73%),MLMT将所有菌株分为7型,而MLST分为4型;根据MLST分型,MLMT17、16、34及39的菌株为MLST5;MLMT2、14、29相对应MLST66、32及31;两种方法的分型分辨能力比较,差异无统计学意义(P=0.488)。结论 MLMT-17/MLST 5是我国和日本的新生隐球菌常见基因型,包含CNG1、CNG2及CNG3位点的MLMT可作为MLST的替代或补充。

关键词：新生隐球菌多位点微卫星灶分型多位点序列分型

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

First ovules integument: what roles?

引用

National Science Review 2022年第4期9卷 21-22页

作者： Brigitte meyer-Berthaud AMAP Universit ?e de MontpellierCNRSCIRADINRAEIRD

The Famennian is a period of increased taxonomic diversity for the first representatives of the major plant groups,especially the spermatophytes (i.***.the seed plants) that,today,represent the most abundant and diversified plant group on Earth [1,2].Early spermatophytes evolved a unique ovule-centered reproductive syndrome that allowed them to germinate and grow rapidly in disturbed habitats and,secondarily,to colonize dry habitats unfavorable to the reproduction of their free-sporing predecessors [3,4](Fig.1).In these ovulate organisms,the female gametophyte grows and produces gametes inside the indehiscent megasporangium (nucellus) that differentiates a pollen chamber retaining the pollen grains in its apical part.An integument encloses the nucellus.Like the Runcaria protovule that preceded them by 20 million years,Famennian ovules were all surrounded by a cupule,except perhaps Spermolithus and Warsteinia [5-7].

关键词： DEVONIAN SEED PLANT

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：