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 trehalose at significant levels they have actively transcribed genes encoding the corresponding biosynthetic enzymes. RESULTS:In this study we show that trehalose biosynthesis ability is present in eubacteria, archaea, plants, fungi and animals. In bacteria there are five different biosynthetic routes, whereas in fungi, plants and animals there is only one. We present phylogenetic analyses of the trehalose-6-phosphate synthase (TPS) and trehalose-phosphatase (TPP) domains and show that there is a close evolutionary relationship between these domains in proteins from diverse organisms. In bacteria TPS and TPP genes are clustered, whereas in eukaryotes these domains are fused in a single protein. CONCLUSION:We have demonstrated that trehalose biosynthesis pathways are widely distributed in nature. Interestingly, several eubacterial species have multiple pathways, while eukaryotes have only the TPS/TPP pathway. Vertebrates lack trehalose biosynthetic capacity but can catabolise it. TPS and TPP domains have evolved mainly in parallel and it is likely that they have experienced several instances of gene duplication and lateral gene transfer.
journal_name
BMC Evol Bioljournal_title
BMC evolutionary biologyauthors
Avonce N,Mendoza-Vargas A,Morett E,Iturriaga Gdoi
10.1186/1471-2148-6-109subject
Has Abstractpub_date
2006-12-19 00:00:00pages
109issn
1471-2148pii
1471-2148-6-109journal_volume
6pub_type
杂志文章abstract:BACKGROUND:The subfamily Stevardiinae is a diverse and widely distributed clade of freshwater fishes from South and Central America, commonly known as "tetras" (Characidae). The group was named "clade A" when first proposed as a monophyletic unit of Characidae and later designated as a subfamily. Stevardiinae includes ...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-015-0403-4
更新日期:2015-07-21 00:00:00
abstract:BACKGROUND:Evolutionary histories of glutamyl-tRNA synthetase (GluRS) and glutaminyl-tRNA synthetase (GlnRS) in bacteria are convoluted. After the divergence of eubacteria and eukarya, bacterial GluRS glutamylated both tRNAGln and tRNAGlu until GlnRS appeared by horizontal gene transfer (HGT) from eukaryotes or a dupli...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-14-26
更新日期:2014-02-12 00:00:00
abstract:BACKGROUND:The last time the phylogenetic relationships among members of the family Hemerobiidae were studied quantitatively was over 12 years ago and based exclusively on morphology. Our study builds upon this morphological evidence by adding sequence data from three gene loci to provide a total evidence phylogeny of ...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-016-0746-5
更新日期:2016-09-20 00:00:00
abstract:BACKGROUND:Effects of polyploidisation on gene flow between natural populations are little known. Central European diploid and tetraploid populations of Arabidopsis arenosa and A. lyrata are here used to study interspecific and interploidal gene flow, using a combination of nuclear and plastid markers. RESULTS:Ploidal...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-11-346
更新日期:2011-11-29 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
pub_type: 杂志文章
doi:10.1186/1471-2148-7-114
更新日期:2007-07-10 00:00:00
abstract:BACKGROUND:The number of species within the Malagasy genus Lepilemur and their phylogenetic relationships is disputed and controversial. In order to establish their evolutionary relationships, a comparative cytogenetic and molecular study was performed. We sequenced the complete mitochondrial cytochrome b gene (1140 bp...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-6-17
更新日期:2006-02-23 00:00:00
abstract:BACKGROUND:Oceans are high gene flow environments that are traditionally believed to hamper the build-up of genetic divergence. Despite this, divergence appears to occur occasionally at surprisingly small scales. The Galápagos archipelago provides an ideal opportunity to examine the evolutionary processes of local dive...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-8-150
更新日期:2008-05-16 00:00:00
abstract:BACKGROUND:The genus Corbicula is one of the most invasive groups of molluscs. It includes both sexual and androgenetic lineages. The present study re-assessed the different morphotypes and haplotypes of West European Corbicula in order to clarify their taxonomic identification and phylogenetic relationships with Ameri...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-11-147
更新日期:2011-05-27 00:00:00
abstract:BACKGROUND:Morphological diversity among closely related animals can be the result of differing growth patterns. The Australian radiation of agamid lizards (Amphibolurinae) exhibits great ecological and morphological diversity, which they have achieved on a continent-wide scale, in a relatively short period of time (30...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-018-1335-6
更新日期:2019-01-08 00:00:00
abstract:BACKGROUND:Adaptive protein evolution is common in several Drosophila species investigated. Some studies point to very weak selection operating on amino-acid mutations, with average selection intensities on the order of Nes approximately in D. melanogaster and D. simulans. Species with lower effective population sizes ...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-8-334
更新日期:2008-12-18 00:00:00
abstract:BACKGROUND:The family Polypteridae, commonly known as "bichirs", is a lineage that diverged early in the evolutionary history of Actinopterygii (ray-finned fish), but has been the subject of far less evolutionary study than other members of that clade. Uncovering patterns of morphological change within Polypteridae pro...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-10-21
更新日期:2010-01-25 00:00:00
abstract:BACKGROUND:The acquisition of complex transcriptional regulatory abilities and epigenetic machinery facilitated the transition of the ancestor of apicomplexans from a free-living organism to an obligate parasite. The ability to control sophisticated gene expression patterns enabled these ancient organisms to evolve sev...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-13-37
更新日期:2013-02-11 00:00:00
abstract:BACKGROUND:Polyplacophora, or chitons, have long fascinated malacologists for their distinct and rather conserved morphology and lifestyle compared to other mollusk classes. However, key aspects of their phylogeny and evolution remain unclear due to the few morphological, molecular, or combined phylogenetic analyses, p...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-019-1573-2
更新日期:2020-02-05 00:00:00
abstract:BACKGROUND:The coral skeleton consists of CaCO3 deposited upon an organic matrix primarily as aragonite. Currently galaxin, from Galaxea fascicularis, is the only soluble protein component of the organic matrix that has been characterized from a coral. Three genes related to galaxin were identified in the coral Acropor...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-9-178
更新日期:2009-07-29 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
pub_type: 杂志文章
doi:10.1186/1471-2148-7-221
更新日期:2007-11-12 00:00:00
abstract:BACKGROUND:Very little is known on how changes in circadian rhythms evolve. The noctuid moth Spodoptera frugiperda (Lepidoptera: Noctuidae) consists of two strains that exhibit allochronic differentiation in their mating time, which acts as a premating isolation barrier between the strains. We investigated the genetic ...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-017-0911-5
更新日期:2017-03-06 00:00:00
abstract:BACKGROUND:A central question for understanding the evolutionary responses of plant species to rapidly changing environments is the assessment of their potential for short-term (in one or a few generations) genetic change. In our study, we consider the case of Pinus pinaster Aiton (maritime pine), a widespread Mediterr...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-014-0200-5
更新日期:2014-09-23 00:00:00
abstract:BACKGROUND:Histone modification is an epigenetic mechanism that influences gene regulation in eukaryotes. In particular, histone modifications in CpG islands (CGIs) are associated with different chromatin states and with transcription activity. Changes in gene expression play a crucial role in adaptation and evolution....
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-13-145
更新日期:2013-07-10 00:00:00
abstract:BACKGROUND:Despite the great importance of lepidopteran wing patterns in various biological disciplines, homologies between wing pattern elements in different moth and butterfly lineages are still not understood. Among other reasons, this may be due to an incomplete understanding of the relationship between color patte...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-016-0687-z
更新日期:2016-05-26 00:00:00
abstract:BACKGROUND:The discovery of restriction endonucleases and modification DNA methyltransferases, key instruments of genetic engineering, opened a new era of molecular biology through development of the recombinant DNA technology. Today, the number of potential proteins assigned to type II restriction enzymes alone is bey...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-11-35
更新日期:2011-02-03 00:00:00
abstract:BACKGROUND:The genesis of the eukaryotes was a pivotal event in evolution and was accompanied by the acquisition of numerous new cellular features including compartmentalization by cytoplasmic organelles, mitosis and meiosis, and ciliary motility. Essential for the development of these features was the tubulin cytoskel...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-10-110
更新日期:2010-04-27 00:00:00
abstract:BACKGROUND:Complete mitochondrial genome sequences have become important tools for the study of genome architecture, phylogeny, and molecular evolution. Despite the rapid increase in available mitogenomes, the taxonomic sampling often poorly reflects phylogenetic diversity and is often also biased to represent deeper (...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-10-300
更新日期:2010-10-07 00:00:00
abstract:BACKGROUND:Divergent selection can be a major driver of ecological speciation. In insects of medical importance, understanding the speciation process is both of academic interest and public health importance. In the West Nile virus vector Culex pipiens, intraspecific pipiens and molestus forms vary in ecological and ph...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-015-0477-z
更新日期:2015-09-16 00:00:00
abstract:BACKGROUND:The impact of historical contingency, i.e. the past evolutionary history of a population, on further adaptation is mostly unknown at both the phenotypic and genomic levels. We addressed this question using a two-step evolution experiment. First, replicate populations of Escherichia coli were propagated in fo...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-016-0662-8
更新日期:2016-04-23 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
pub_type: 杂志文章
doi:10.1186/1471-2148-8-43
更新日期:2008-02-08 00:00:00
abstract:BACKGROUND:Although their role in cell division is essential, centromeres evolve rapidly in animals, plants and yeasts. Unlike the complex centromeres of plants and aminals, the point centromeres of Saccharomcyes yeasts can be readily sequenced to distinguish amongst the possible explanations for fast centromere evolut...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-11-211
更新日期:2011-07-18 00:00:00
abstract:BACKGROUND:Coevolution is a selective process of reciprocal adaptation in hosts and parasites or in mutualistic symbionts. Classic population genetics theory predicts the signatures of selection at the interacting loci of both species, but not the neutral genome-wide polymorphism patterns. To bridge this gap, we build ...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-019-1556-3
更新日期:2019-12-19 00:00:00
abstract:BACKGROUND:Populations of herbivorous insects may become genetically differentiated because of local adaptation to different hosts and climates as well as historical processes, and further genetic divergence may occur following the development of reproductive isolation among populations. Here we investigate the populat...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-017-1116-7
更新日期:2017-12-20 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
pub_type: 杂志文章
doi:10.1186/1471-2148-7-229
更新日期:2007-11-15 00:00:00
abstract:BACKGROUND:Hotspots of angiosperm species richness and endemism in Mediterranean-climate regions are among the most striking, but least well-understood, geographic patterns of biodiversity. Recent studies have emphasized the importance of rapid diversification within hotspots, compared to non-hotspot regions, as a majo...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-13-155
更新日期:2013-08-19 00:00:00