简介：为了学习简历，活跃代谢物由导出海绵的未耕作的共生者生产了，海绵Gelliodesgracilis的共生者的一个metagenomicDNA图书馆被构造。DNA的平均尺寸在图书馆插入是20kb。这个图书馆用纸圆盘assaying为抗菌素活动被屏蔽。二克隆对小球菌tetragenus显示了抗菌剂活动。这二克隆的代谢物通过HPLC被分析。结果证明他们的代谢物与主人E的那些相当不同。包含向量pHZ132的关口iDH5α和主人。这研究可以介绍一条新途径给探索简历海绵共生者的活跃代谢物。

简介：Inthisstudy,theentiremitochondrialDNA(mtDNA)controlregion(CR)ofPholisfangiwasamplifiedviapolymerasechainreactionfollowedbydirectsequencing.ThelengthofthemtDNACRconsensussequenceofP.fangiwas853bpinlength.Inaccordancewiththerecognitionsitesaswerepreviouslyreportedinfishspecies,themtDNACRsequenceofP.fangicanbedividedinto3domains,i.e.,theextendedterminalassociatedsequence(ETAS),thecentralconservedsequenceblock(CSB),andtheCSBdomain.Inaddition,thefollowingstructureswereidentifiedinthemtDNACRsequenceofP.fangi:2ETASsintheETASdomain(TASandcTAS),6CSBsinthecentralCSBdomain(CSB-FtoCSB-A),and3CSBsintheCSBdomain(CSB-1toCSB-3).ThesedemonstratedthatthestructureofthemtDNACRofP.fangiwassubstantiallydifferentfromthoseofmostotherfishspecies.ThemtDNACRsequenceofP.fangicontainedoneconservedregionfrom656bpto815bp.Similartomostotherfishspecies,P.fangihasnotandemrepeatsequencesinitsmtDNACRsequence.PhylogeneticanalysisbasedonthecompletemtDNACRsequencesshowedthattherewerenogeneticdifferenceswithinP.fangipopulationsofthesamegeographicaloriginandbetweenP.fangipopulationsofdifferentgeographicalorigins.

简介：Mercury(Hg)isoneofthecommonlyencounteredheavymetals,whichiswidespreadininshoresedimentsofChina.InordertoinvestigatethetoxicityofHgonmarineinvertebrates,westudiedtheeffectsofthedivalentmercuricion(Hg2+)(attwofinalconcentrationsof0.0025and0.0050mgL-1,preparedwithHgCl2)onmetallothionein(MT)content,DNAintegrity(DNAstrandbreaks)andcatalase(CAT)inthegillsandhepatopancreas,antioxidantenzymeactivitiesofsuperoxidedismutase(SOD),catalase(CAT)andglutathioneperoxidase(GPx),inthehemolymph,gillsandhepatopancreasoftheportunidcrabCharybdisjaponicaforanexperimentperiodupto15d.TheresultsindicatedthatMTwassignificantlyinducedafter3d,withapositivecorrelationwithHg2+doseandtimeinthehepatopancreasandanegativecorrelationwithHg2+doseandtimeinthegills.WhileCATinthehemolymphwasnotdetected,itincreasedinthehepatopancreasduringtheentireexperiment;SODandGPxinthethreetissueswerestimulatedafter12h,bothattainedpeakvalueandthenreducedduringtheexperimentalperiod.Meanwhile,DNAstrandbreakswereallinducedsignificantlyafter12h.TheseresultssuggestedthedetoxificationstrategiesagainstHg2+inthreetissuesofC.japonica.

简介：Aciladivaricata(Hinds,1843)andA.mirabilis(AdamsandReeve,1850)arecommonbenthicbivalvesinChina.Anumberofresearchershaveproposedthatthelatterspeciesisajuniorsynonymoftheformerspecies.Becauseofmorphologicalsimilarities,itisdifficulttodistinguishthesetwospeciesbasedonvisualexaminationonly.Forbetterunderstandingoftheirtaxonomy,themitochondrialCOIgenefragmentsoffiveindividualsofA.divaricatafromtheEastChinaSeaandsixindividualsofA.mirabilisfromtheYellowSeaweresequencedinthisstudy.ThephylogeneticrelationshipsoftheobtainedCOIsequences,togetherwithnineteensequencesofthreespeciesofthegenusNucula,wereanalyzed.Thepairwiseintra-andinter-specificdistancesfortheCOIsequencesrangedfrom0.002to0.017andfrom0.128to0.134,respectively,andnooverlapwasfound.Phylogenetically,A.divaricataandA.mirabilisformdistinctcladesandclusterintoasistertoallotherNuculaspecies.TheresultsindicatedthatA.divaricataandA.mirabilisaretwodistinctspecies.Thedifferencesinthemorphologyanddistributionbetweenthetwospecieswerebrieflydiscussed.

简介：Inthispaper,wetooktheleadinstudyingonspecificityofthemicrosatelliteDNAlociandapplicabilityofmicrosatelliteDNAprimersinprotozoa.Inordertostudycharactersofmicrosatellitesinfree-livingprotozoa,eightmicrosatellitelociprimersdevelopedfromTrypanosomacruzi(MCLE01,SCLE10,MCLE08,SCLE11,MCLF10,MCLG10,MCL03,MCL05)wereemployedtoamplifymicrosatelliteinfourfree-livingprotozoa,includingBododesignis,EuglenagracilisFACHB848,ParameciumbruziseandTetrahymenathermophilaBF1.IntheamplificationsystemsofP.bruzise,fourloci(SCLE10,SCLE11,MCLF10,MCL03)wereamplifiedsuccessfully,andfouramplificationfragmentswereinpropersize.IngenomeofE.gracilisFACHB848,fiveofeightprimersbroughtfiveclearamplificationbands.InB.designis,three(No.4,5and7)ofeightlociproducedclearandsharpproductswithoutstutterbands,whereasnobandsappearedinT.thermophilaBF1.Further,eight300-500bpamplificationfragmentswereclonedandsequenced.Nevertheless,allsequencedproductsdidnotcontaincorrespondingmicrosatellitesequence,althoughBodoisinthesameorderandhasthenearestphylogeneticrelationwithTrypanosomaamongthesefourspecies.Thus,themicrosatelliteDNAprimerscannotbeappliedamongorderormorefartaxa,andthespecificityofmicrosatelliteDNAisveryhighinprotozoa.TheresultsofthisstudywillcontributetoourunderstandingofmicrosatelliteDNAinprotozoa.

简介：Inapreliminaryinvestigation,RandomAmplifiedPolymorphicDNA(RAPD)analysisandpartialmitochondrialND2genesequencingwereconductedtostudythegeneticvariationoftheIndianmackerel,Rastrelligerkanagurtaalonga450kmstretchofitsdistributiononthewestcoastofPeninsularMalaysia.Atotalof53individualsfrom6populationswereanalyzedusing4RAPDprimersandasub-sampleof15individualswaschosenforsequencingofpartialND2gene.Comparisonbetweenthe2markersrevealedgeneticstructuringintheRAPDresultsbutgenetichomogeneityforND2gene.Basedontheformertheremaybeatleast2geneticallydifferentiatedgroupsofRastrelligerkanagurtaalongthisstretch.

简介：FIA广泛地被使用超过一十年了解开变丑和变形难题。因为在岩石中的组合layering总是重新激活多重变丑在哪儿发生了，Orogenic处理在历史或orogenesis挑战科学家期间早发展，几乎不离开在矩阵保存的生叶开发的历史的小证据。在科罗拉多的落基山脉的山麓丘陵，美国如果porphyroblasts没在影响了这些岩石的多重变丑事件期间成长或如果他们旋转了，当这些事件发生了，包含一直不是可区分的四个FIA集合(趋势)的继任。当变丑继续了，他们表明两变丑和isograds的地点划分显著地变化了。

简介：Saccharina是最重要的无热水设备生活水兵褐之一海藻的类。在这研究，我们分析了S的transcriptome。装饰用的梨树，它属于1000植物(OneKP)工程，由使用定序技术的下一代的高产量的DNA。未加工的数据的大约5.16GB被产生，并且有454bp的平均长度的65536脚手架与肥皂denovo汇编方法被装配。总共，19040unigenes被强风识别；25734脚手架被聚类进37基因本体论功能的组；6760脚手架被分类进25个轮牙范畴，以及被分到306条KEGG小径的2665脚手架。unigenes的多数比另外的cyanobacteria，海洋的硅藻，和植物包括棕色的水藻和硅藻展出了更多的类似到水藻。Saccharina装饰用的梨树有突出的能力积累象Br那样的卤素，我从海水经由halogenation处理。我们在S获得了42不同钒依赖者haloperoxidases(vHPO)。装饰用的梨树transcriptome数据，包括钒依赖者iodoperoxidase(vIPO)的5个片断和钒依赖者bromoperoxidase(vBPO)的37个片断。识别fulllengthS的复杂分析。装饰用的梨树vBPO1和S。装饰用的梨树vBPO2在在海洋的海藻的vBPOs和vIPOs之间的棕色的水藻和强壮的关系的种类之中揭示了vBPO的重要性。这研究将提高我们生物特征的理解和S的经济价值。装饰用的梨树种类。