abstract：BACKGROUND:Lineage-specific genes, the genes that are restricted to a limited subset of related organisms, may be important in adaptation. In parasitic organisms, lineage-specific gene products are possible targets for vaccine development or therapeutics when these genes are absent from the host genome. RESULTS:In thi...

journal_title：BMC evolutionary biology

authors： Kuo CH,Kissinger JC

更新日期：2008-04-11 00:00:00

abstract：BACKGROUND:The Amazon molly (Poecilia formosa) is a small unisexual fish that has been suspected of being threatened by extinction from the stochastic accumulation of slightly deleterious mutations that is caused by Muller's ratchet in non-recombining populations. However, no detailed quantification of the extent of th...

journal_title：BMC evolutionary biology

authors： Loewe L,Lamatsch DK

更新日期：2008-03-19 00:00:00

abstract：BACKGROUND:Amongst the most commonly used molecular markers for plant phylogenetic studies are the nuclear ribosomal internal transcribed spacers (ITS). Intra-individual variability of these multicopy regions is a very common phenomenon in plants, the causes of which are debated in literature. Phylogenetic reconstructi...

journal_title：BMC evolutionary biology

authors： Göker M,Grimm GW

更新日期：2008-03-18 00:00:00

abstract：BACKGROUND:Computer-assisted analyses have shown that all bacterial genomes contain a small percentage of open reading frames with a frameshift or in-frame stop codon We report here a comparative analysis of these interrupted coding sequences (ICDSs) in six isolates of M. tuberculosis, two of M. bovis and one of M. afr...

journal_title：BMC evolutionary biology

authors： Deshayes C,Perrodou E,Euphrasie D,Frapy E,Poch O,Bifani P,Lecompte O,Reyrat JM

更新日期：2008-03-06 00:00:00

abstract：BACKGROUND:Natural selection and genetic drift are major forces responsible for temporal genetic changes in populations. Furthermore, these evolutionary forces may interact with each other. Here we study the impact of an ongoing adaptive process at the molecular genetic level by analyzing the temporal genetic changes t...

journal_title：BMC evolutionary biology

authors： Simões P,Pascual M,Santos J,Rose MR,Matos M

更新日期：2008-02-26 00:00:00

abstract：BACKGROUND:The mechanism by which duplicate genes originate - whether by duplication of a whole genome or of a genomic segment - influences their genetic fates. To study events that trigger duplicate gene persistence after whole genome duplication in vertebrates, we have analyzed molecular evolution and expression of h...

journal_title：BMC evolutionary biology

authors： Chain FJ,Ilieva D,Evans BJ

更新日期：2008-02-08 00:00:00

abstract：BACKGROUND:There are around 400 internationally recognized dog breeds in the world today, with a remarkable diversity in size, shape, color and behavior. Breeds are considered to be uniform groups with similar physical characteristics, shaped by selection rooted in human preferences. This has led to a large genetic dif...

journal_title：BMC evolutionary biology

authors： Björnerfeldt S,Hailer F,Nord M,Vilà C

更新日期：2008-01-28 00:00:00

abstract：BACKGROUND:Bacteria occur in facultative association and intracellular symbiosis with a diversity of eukaryotic hosts. Recently, we have helped to characterise an intracellular nitrogen fixing bacterium, the so-called spheroid body, located within the diatom Rhopalodia gibba. Spheroid bodies are of cyanobacterial origi...

journal_title：BMC evolutionary biology

authors： Kneip C,Voss C,Lockhart PJ,Maier UG

更新日期：2008-01-28 00:00:00

abstract：BACKGROUND:Previous phylogenetic analyses of African elephants have included limited numbers of forest elephant samples. A large-scale assessment of mitochondrial DNA diversity in forest elephant populations here reveals a more complex evolutionary history in African elephants as a whole than two-taxon models assume. ...

journal_title：BMC evolutionary biology

authors： Johnson MB,Clifford SL,Goossens B,Nyakaana S,Curran B,White LJ,Wickings EJ,Bruford MW

更新日期：2007-12-19 00:00:00

abstract：BACKGROUND:Arthropods are infected by a wide diversity of maternally transmitted microbes. Some of these manipulate host reproduction to facilitate population invasion and persistence. Such parasites transmit vertically on an ecological timescale, but rare horizontal transmission events have permitted colonisation of n...

journal_title：BMC evolutionary biology

authors： Tinsley MC,Majerus ME

更新日期：2007-11-29 00:00:00

abstract：BACKGROUND:A single measles vaccination provides lifelong protection. No antigenic variants that escape immunity have been observed. By contrast, influenza continually evolves new antigenic variants, and the vaccine has to be updated frequently with new strains. Both measles and influenza are RNA viruses with high muta...

journal_title：BMC evolutionary biology

authors： Frank SA,Bush RM

更新日期：2007-11-15 00:00:00

abstract：BACKGROUND:: Duplicated genes are common in vertebrate genomes. Their persistence is assumed to be either a consequence of gain of novel function (neofunctionalisation) or partitioning of the function of the ancestral molecule (sub-functionalisation). Surprisingly few studies have evaluated the extent of such modificat...

journal_title：BMC evolutionary biology

authors： Cardoso JC,de Vet EC,Louro B,Elgar G,Clark MS,Power DM

更新日期：2007-11-12 00:00:00

abstract：BACKGROUND:Rosids are a major clade in the angiosperms containing 13 orders and about one-third of angiosperm species. Recent molecular analyses recognized two major groups (i.e., fabids with seven orders and malvids with three orders). However, phylogenetic relationships within the two groups and among fabids, malvids...

journal_title：BMC evolutionary biology

authors： Zhu XY,Chase MW,Qiu YL,Kong HZ,Dilcher DL,Li JH,Chen ZD

更新日期：2007-11-10 00:00:00

abstract：BACKGROUND:Although selection favors exploitative competition within groups, a group of hypercompetitive individuals may be less productive than a cooperative group. When competition is costly for group fitness, among-group selection can favor groups with 'policing' individuals who reduce within-group competition at a ...

journal_title：BMC evolutionary biology

authors： Brandvain Y,Wade MJ

更新日期：2007-10-25 00:00:00

abstract：BACKGROUND:The reactive oxygen-generating NADPH oxidases (Noxes) function in a variety of biological roles, and can be broadly classified into those that are regulated by subunit interactions and those that are regulated by calcium. The prototypical subunit-regulated Nox, Nox2, is the membrane-associated catalytic subu...

journal_title：BMC evolutionary biology

authors： Kawahara T,Lambeth JD

更新日期：2007-09-27 00:00:00

abstract：BACKGROUND:Angiogenesis, the formation of new blood vessels, is a primordial process in development and its dysregulation has a central role in the pathogenesis of many diseases. Angiogenin (ANG), a peculiar member of the RNase A superfamily, is a potent inducer of angiogenesis involved in many different types of cance...

journal_title：BMC evolutionary biology

authors： Osorio DS,Antunes A,Ramos MJ

更新日期：2007-09-20 00:00:00

abstract：BACKGROUND:The Rhinopomatidae, traditionally considered to be one of the most ancient chiropteran clades, remains one of the least known groups of Rhinolophoidea. No relevant fossil record is available for this family. Whereas there have been extensive radiations in related families Rhinolophidae and Hipposideridae, th...

journal_title：BMC evolutionary biology

authors： Hulva P,Horácek I,Benda P

更新日期：2007-09-14 00:00:00

abstract：BACKGROUND:Tanabin, transitin and nestin are type VI intermediate filament (IF) proteins that are developmentally regulated in frogs, birds and mammals, respectively. Tanabin is expressed in the growth cones of embryonic vertebrate neurons, whereas transitin and nestin are found in myogenic and neurogenic cells. Anothe...

journal_title：BMC evolutionary biology

authors： Guérette D,Khan PA,Savard PE,Vincent M

更新日期：2007-09-13 00:00:00

abstract：BACKGROUND:Within Chordata, the subphyla Vertebrata and Cephalochordata (lancelets) are characterized by a remarkable stability of the mitochondrial (mt) genome, with constancy of gene content and almost invariant gene order, whereas the limited mitochondrial data on the subphylum Tunicata suggest frequent and extensiv...

journal_title：BMC evolutionary biology

authors： Iannelli F,Griggio F,Pesole G,Gissi C

更新日期：2007-08-31 00:00:00

abstract：BACKGROUND:Chaetognaths, or arrow worms, are small marine, bilaterally symmetrical metazoans. The objective of this study was to analyse ribosomal protein (RP) coding sequences from a published collection of expressed sequence tags (ESTs) from a chaetognath (Spadella cephaloptera) and to use them in phylogenetic studie...

journal_title：BMC evolutionary biology

authors： Barthélémy RM,Chenuil A,Blanquart S,Casanova JP,Faure E

更新日期：2007-08-28 00:00:00

abstract：BACKGROUND:The hypothesis of an RNA-based origin of life, known as the "RNA world", is strongly affected by the hostile environmental conditions probably present in the early Earth. In particular, strong UV and X-ray radiations could have been a major obstacle to the formation and evolution of the first biomolecules. I...

journal_title：BMC evolutionary biology

authors： Biondi E,Branciamore S,Maurel MC,Gallori E

更新日期：2007-08-16 00:00:00

abstract：BACKGROUND:Considerable attention has focused on how selection on dispersal and other core life-history strategies (reproductive effort, survival ability, colonization capacity) may lead to so-called dispersal syndromes. Studies on genetic variation in these syndromes within species could importantly increase our under...

journal_title：BMC evolutionary biology

authors： Fjerdingstad EJ,Schtickzelle N,Manhes P,Gutierrez A,Clobert J

更新日期：2007-08-06 00:00:00

abstract：BACKGROUND:Males of many species adjust their reproductive tactics with regard to their condition and status. For example, large males may develop weapons and fight for access to females, whereas small or undernourished males do not express costly weapons or ornaments and sneak copulations. Different condition-dependen...

journal_title：BMC evolutionary biology

authors： Schrempf A,Darrouzet E,Heinze J

更新日期：2007-07-10 00:00:00

abstract：BACKGROUND:RNA molecules, through their dual appearance as sequence and structure, represent a suitable model to study evolutionary properties of quasispecies. The essential ingredient in this model is the differentiation between genotype (molecular sequences which are affected by mutation) and phenotype (molecular str...

journal_title：BMC evolutionary biology

authors： Stich M,Briones C,Manrubia SC

更新日期：2007-07-09 00:00:00

abstract：BACKGROUND:Recent publications concerning the interordinal phylogeny of placental mammals have converged on a common signal, consisting of four major radiations with some ambiguity regarding the placental root. The DNA data with which these relationships have been reconstructed are easily accessible from public databas...

journal_title：BMC evolutionary biology

authors： Asher RJ

更新日期：2007-07-03 00:00:00

abstract：BACKGROUND:Septins are cytoskeletal GTPase proteins first discovered in the fungus Saccharomyces cerevisiae where they organize the septum and link nuclear division with cell division. More recently septins have been found in animals where they are important in processes ranging from actin and microtubule organization ...

journal_title：BMC evolutionary biology

authors： Pan F,Malmberg RL,Momany M

更新日期：2007-07-01 00:00:00

abstract：BACKGROUND:Molecular clock dates, which place the origin of animal phyla deep in the Precambrian, have been used to reject the hypothesis of a rapid evolutionary radiation of animal phyla supported by the fossil record. One possible explanation of the discrepancy is the potential for fast substitution rates early in th...

journal_title：BMC evolutionary biology

authors： Fontanillas E,Welch JJ,Thomas JA,Bromham L

更新日期：2007-06-26 00:00:00

abstract：BACKGROUND:Metallothionein (mt) transcription is elevated in heavy metal tolerant field populations of Orchesella cincta (Collembola). This suggests that natural selection acts on transcriptional regulation of mt in springtails at sites where cadmium (Cd) levels in soil reach toxic values This study investigates the na...

journal_title：BMC evolutionary biology

authors： Janssens TK,Mariën J,Cenijn P,Legler J,van Straalen NM,Roelofs D

更新日期：2007-06-11 00:00:00

abstract：BACKGROUND:In plants the hormone cytokinin is perceived by members of a small cytokinin receptor family, which are hybrid sensor histidine kinases. While the immediate downstream signaling pathway is well characterized, the domain of the receptor responsible for ligand binding and which residues are involved in this pr...

journal_title：BMC evolutionary biology

authors： Heyl A,Wulfetange K,Pils B,Nielsen N,Romanov GA,Schmülling T

更新日期：2007-04-17 00:00:00

abstract：BACKGROUND:Recent models suggest that escalating reciprocal selection among antagonistically interacting species is predicted to occur in areas of higher resource productivity. In a putatively coevolved interaction between a freshwater snail (Mexipyrgus churinceanus) and a molluscivorous cichlid (Herichthys minckleyi),...

journal_title：BMC evolutionary biology

authors： Johnson SG,Hulsey CD,de León FJ

更新日期：2007-03-30 00:00:00

abstract：BACKGROUND:Horizontal gene transfer plays an important role in evolution because it sometimes allows recipient lineages to adapt to new ecological niches. High genes transfer frequencies were inferred for prokaryotic and early eukaryotic evolution. Does horizontal gene transfer also impact phylogenetic reconstruction o...

journal_title：BMC evolutionary biology

authors： Poptsova MS,Gogarten JP

更新日期：2007-03-21 00:00:00

abstract：BACKGROUND:Molecular and genetic analyses conducted in model organisms such as Drosophila and vertebrates, have provided a wealth of information about how networks of transcription factors control the proper development of these species. Much less is known, however, about the evolutionary origin of these elaborated net...

journal_title：BMC evolutionary biology

authors： Simionato E,Ledent V,Richards G,Thomas-Chollier M,Kerner P,Coornaert D,Degnan BM,Vervoort M

更新日期：2007-03-02 00:00:00

abstract：BACKGROUND:Speciation often occurs in complex or uncertain temporal and spatial contexts. Processes such as reinforcement, allopatric divergence, and assortative mating can proceed at different rates and with different strengths as populations diverge. The Central American Midas cichlid fish species complex is an impor...

journal_title：BMC evolutionary biology

authors： Bunje PM,Barluenga M,Meyer A

更新日期：2007-02-20 00:00:00

abstract：BACKGROUND:Function prediction by transfer of annotation from the top database hit in a homology search has been shown to be prone to systematic error. Phylogenomic analysis reduces these errors by inferring protein function within the evolutionary context of the entire family. However, accuracy of function prediction ...

journal_title：BMC evolutionary biology

authors： Krishnamurthy N,Brown D,Sjölander K

更新日期：2007-02-08 00:00:00

abstract：BACKGROUND:A comprehensive evolutionary analysis of bacterial genomes implies to identify the hallmark of vertical and non-vertical signals and to discriminate them from the presence of mere phylogenetic noise. In this report we have addressed the impact of factors like the universal distribution of the genes, their es...

journal_title：BMC evolutionary biology

authors： Comas I,Moya A,González-Candelas F

更新日期：2007-02-08 00:00:00

abstract：BACKGROUND:The tribe Lamprologini is the major substrate breeding lineage of Lake Tanganyika's cichlid species flock. Among several different life history strategies found in lamprologines, the adaptation to live and breed in empty gastropod shells is probably the most peculiar. Although shell-breeding arose several ti...

journal_title：BMC evolutionary biology

authors： Koblmüller S,Duftner N,Sefc KM,Aibara M,Stipacek M,Blanc M,Egger B,Sturmbauer C

更新日期：2007-01-25 00:00:00

abstract：BACKGROUND:The compatible solute trehalose is a non-reducing disaccharide, which accumulates upon heat, cold or osmotic stress. It was commonly accepted that trehalose is only present in extremophiles or cryptobiotic organisms. However, in recent years it has been shown that although higher plants do not accumulate tre...

journal_title：BMC evolutionary biology

authors： Avonce N,Mendoza-Vargas A,Morett E,Iturriaga G

更新日期：2006-12-19 00:00:00

abstract：BACKGROUND:Glycolysis and subsequent fermentation is the main energy source for many anaerobic organisms. The glycolytic pathway consists of ten enzymatic steps which appear to be universal amongst eukaryotes. However, it has been shown that the origins of these enzymes in specific eukaryote lineages can differ, and so...

journal_title：BMC evolutionary biology

authors： Stechmann A,Baumgartner M,Silberman JD,Roger AJ

更新日期：2006-11-23 00:00:00

abstract：BACKGROUND:The past decade has seen a remarkable increase in the number of recognized mouse lemur species (genus Microcebus). As recently as 1994, only two species of mouse lemur were recognized according to the rules of zoological nomenclature. That number has now climbed to as many as fifteen proposed species. Indeed...

journal_title：BMC evolutionary biology

authors： Heckman KL,Rasoazanabary E,Machlin E,Godfrey LR,Yoder AD

更新日期：2006-11-16 00:00:00

abstract：BACKGROUND:The PE and PPE multigene families of Mycobacterium tuberculosis comprise about 10% of the coding potential of the genome. The function of the proteins encoded by these large gene families remains unknown, although they have been proposed to be involved in antigenic variation and disease pathogenesis. Interes...

journal_title：BMC evolutionary biology

authors： Gey van Pittius NC,Sampson SL,Lee H,Kim Y,van Helden PD,Warren RM

更新日期：2006-11-15 00:00:00