简介：Horizontalgenetransfer(HGT)haslongbeenconsideredasaprincipalforceforanorganismtogainnovelgenesingenomeevolution.Homologysearch,phylogeneticanalysisandnucleotidecompositionanalysisarethreemajorobjectiveapproachestoarguablydeterminetheoccurrenceanddirectionalityofHGT.Here,21genesthatpossessthepotentialtohorizontaltransferwereacquiredfromthewholegenomeofMagnaporthegriseaaccordingtoannotation,amongwhichthreecandidategenes(correspondingproteinaccessionnumbersareEAA55123,EAA47200andEAA52136)wereselectedforfurtheranalysis.AccordingtoBLASThomologyresults,wesubsequentlyconductedphylogeneticanalysisofthethreecandidateHGTgenes.Moreover,nucleotidecompositionanalysiswasconductedtofurthervalidatetheseHGTs.Inaddition,thefunctionsofthethreecandidategenesweresearchedinCOGdatabase.Consequently,weconcludethatthegeneencodingproteinEAA55123istransferredfromClostridiumperfringens.AnotherHGTeventisbetweenEAA52136andacertainmetazoan'scorrespondinggene,butthedirectionremainsuncertain.Yet,EAA47200isnotatransferredgene.

简介：植物非特定的类脂化合物转移蛋白质(nsLtps)被报导了对细菌、真菌的病原体涉及植物防卫活动。在这研究，我们识别了135(122通常认为并且13以前识别了)SolanaceaensLtps，它被聚类进8个不同的组。由与Boutrot的nsLtp分类作比较，我们分类这八个组进五种类型(我，II，IV，IX和X)。我们把SolanaceaensLtps与Arabi-dopsis和GramineaensLtps作比较并且发现(1)那打字我，II和IV被Solanaceae，Gramineae和Arabidopsis分享；(2)类型III，V，VI和VIII被Gramineae和Arabidopsis分享然而并非到目前为止在Solanaceae检测了；(3)而类型IX在Arabidopsis和Solanaceae仅仅是在场的，类型VII仅仅在Gramineae被发现；(4)类型X是在我们的数据说明52.59%SolanaceaensLtps的一种新类型，并且到目前为止没在任何另外的植物被报导。我们进一步造了并且比较了八个组的三维的结构，并且发现在nsLtp家庭以内的主要功能的多样化能被早于到monocot/dicot分叉，并且许多基因复制和顺序变化在monocot/dicot分叉以后发生在nsLtp家庭，特别在Solanaceae。