Abstract:
BACKGROUND:The importance of transposable elements (TEs) in the genomic remodeling and chromosomal rearrangements that accompany lineage diversification in vertebrates remains the subject of debate. The major impediment to understanding the roles of TEs in genome evolution is the lack of comparative and integrative analyses on complete taxonomic groups. To help overcome this problem, we have focused on the Antarctic teleost genus Trematomus (Notothenioidei: Nototheniidae), as they experienced rapid speciation accompanied by dramatic chromosomal diversity. Here we apply a multi-strategy approach to determine the role of large-scale TE mobilization in chromosomal diversification within Trematomus species. RESULTS:Despite the extensive chromosomal rearrangements observed in Trematomus species, our measurements revealed strong interspecific genome size conservation. After identifying the DIRS1, Gypsy and Copia retrotransposon superfamilies in genomes of 13 nototheniid species, we evaluated their diversity, abundance (copy numbers) and chromosomal distribution. Four families of DIRS1, nine of Gypsy, and two of Copia were highly conserved in these genomes; DIRS1 being the most represented within Trematomus genomes. Fluorescence in situ hybridization mapping showed preferential accumulation of DIRS1 in centromeric and pericentromeric regions, both in Trematomus and other nototheniid species, but not in outgroups: species of the Sub-Antarctic notothenioid families Bovichtidae and Eleginopsidae, and the non-notothenioid family Percidae. CONCLUSIONS:In contrast to the outgroups, High-Antarctic notothenioid species, including the genus Trematomus, were subjected to strong environmental stresses involving repeated bouts of warming above the freezing point of seawater and cooling to sub-zero temperatures on the Antarctic continental shelf during the past 40 millions of years (My). As a consequence of these repetitive environmental changes, including thermal shocks; a breakdown of epigenetic regulation that normally represses TE activity may have led to sequential waves of TE activation within their genomes. The predominance of DIRS1 in Trematomus species, their transposition mechanism, and their strategic location in "hot spots" of insertion on chromosomes are likely to have facilitated nonhomologous recombination, thereby increasing genomic rearrangements. The resulting centric and tandem fusions and fissions would favor the rapid lineage diversification, characteristic of the nototheniid adaptive radiation.
journal_name
BMC Genomicsjournal_title
BMC genomicsauthors
Auvinet J,Graça P,Belkadi L,Petit L,Bonnivard E,Dettaï A,Detrich WH 3rd,Ozouf-Costaz C,Higuet Ddoi
10.1186/s12864-018-4714-xsubject
Has Abstractpub_date
2018-05-09 00:00:00pages
339issue
1issn
1471-2164pii
10.1186/s12864-018-4714-xjournal_volume
19pub_type
杂志文章相关文献
BMC GENOMICS文献大全abstract:BACKGROUND:Soybean seed weight is not only a yield component, but also a critical trait for various soybean food products such as sprouts, edamame, soy nuts, natto and miso. Linkage analysis and genome-wide association study (GWAS) are two complementary and powerful tools to connect phenotypic differences to the underl...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/s12864-017-3922-0
更新日期:2017-07-12 00:00:00
abstract:BACKGROUND:The Multinational Brassica rapa Genome Sequencing Project (BrGSP) has developed valuable genomic resources, including BAC libraries, BAC-end sequences, genetic and physical maps, and seed BAC sequences for Brassica rapa. An integrated linkage map between the amphidiploid B. napus and diploid B. rapa will fac...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/1471-2164-11-594
更新日期:2010-10-22 00:00:00
abstract:BACKGROUND:Sterol esterases and lipases are enzymes able to efficiently catalyze synthesis and hydrolysis reactions of both sterol esters and triglycerides and due to their versatility could be widely used in different industrial applications. Lipases with this ability have been reported in the yeast Candida rugosa tha...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/1471-2164-14-712
更新日期:2013-10-18 00:00:00
abstract:BACKGROUND:The freshwater snail Lymnaea stagnalis (L. stagnalis) has served as a successful model for studies in the field of Neuroscience. However, a serious drawback in the molecular analysis of the nervous system of L. stagnalis has been the lack of large-scale genomic or neuronal transcriptome information, thereby ...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/1471-2164-10-451
更新日期:2009-09-23 00:00:00
abstract:BACKGROUND:Though glioblastoma multiforme (GBM) is the most frequently occurring brain malignancy in adults, clinical treatment still faces challenges due to poor prognoses and tumor relapses. Recently, microRNAs (miRNAs) have been extensively used with the aim of developing accurate molecular therapies, because of the...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/s12864-016-3321-y
更新日期:2016-12-22 00:00:00
abstract:BACKGROUND:Because of the advent of high-throughput sequencing and the consequent reduction in the cost of sequencing, many organisms have been completely sequenced and most of their genes identified. It thus has become possible to represent whole genomes as ordered lists of gene identifiers and to study the rearrangem...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/1471-2164-9-S2-S15
更新日期:2008-09-16 00:00:00
abstract:BACKGROUND:Transmembrane β-barrel proteins are a special class of transmembrane proteins which play several key roles in human body and diseases. Due to experimental difficulties, the number of transmembrane β-barrel proteins with known structures is very small. Over the years, a number of learning-based methods have b...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/1471-2164-13-S2-S5
更新日期:2012-04-12 00:00:00
abstract:BACKGROUND:Changes in gene regulation are thought to be crucial for the adaptation of organisms to their environment. Transcriptome analyses can be used to identify candidate genes for ecological adaptation, but can be complicated by variation in gene expression between tissues, sexes, or individuals. Here we use high-...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/1471-2164-13-654
更新日期:2012-11-21 00:00:00
abstract:BACKGROUND:Midgut invasion, a major bottleneck for malaria parasites transmission is considered as a potential target for vector-parasite interaction studies. New intervention strategies are required to explore the midgut proteins and their potential role in refractoriness for malaria control in Anopheles mosquitoes. T...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/s12864-018-4729-3
更新日期:2018-05-08 00:00:00
abstract:BACKGROUND:Paired-tag sequencing approaches are commonly used for the analysis of genome structure. However, mammalian genomes have a complex organization with a variety of repetitive elements that complicate comprehensive genome-wide analyses. RESULTS:Here, we systematically assessed the utility of paired-end and mat...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/1471-2164-14-257
更新日期:2013-04-16 00:00:00
abstract:BACKGROUND:Avian pathogenic Escherichia coli (APEC) causes colibacillosis, which results in significant economic losses to the poultry industry worldwide. However, the diversity between isolates remains poorly understood. Here, a total of 272 APEC isolates collected from the United Kingdom (UK), Italy and Germany were ...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/s12864-016-3289-7
更新日期:2016-11-22 00:00:00
abstract:BACKGROUND:Pathogen perception by plants is mediated by plasma membrane-localized immune receptors that have varied extracellular domains. Lectin receptor kinases (LecRKs) are among these receptors and are subdivided into 3 classes, C-type LecRKs (C-LecRKs), L-type LecRKs (L-LecRKs) and G-type LecRKs (G-LecRKs). While ...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/s12864-018-4606-0
更新日期:2018-04-06 00:00:00
abstract::We describe an emerging initiative - the 'Functional Annotation of All Salmonid Genomes' (FAASG), which will leverage the extensive trait diversity that has evolved since a whole genome duplication event in the salmonid ancestor, to develop an integrative understanding of the functional genomic basis of phenotypic var...
journal_title:BMC genomics
pub_type: 社论
doi:10.1186/s12864-017-3862-8
更新日期:2017-06-27 00:00:00
abstract:BACKGROUND:Meloidogyne incognita is a devastating nematode that causes significant losses in cucumber production worldwide. Although numerous studies have emphasized on the susceptible response of plants after nematode infection, the exact regulation mechanism of M. incognita-resistance in cucumber remains elusive. Ver...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/s12864-018-4979-0
更新日期:2018-08-03 00:00:00
abstract:BACKGROUND:Genomic characterization of rotavirus (RoV) has not been adopted at large-scale due to the complexity of obtaining sequences for all 11 segments, particularly when feces are used as starting material. METHODS:To overcome these limitations, we developed a novel RoV capture and genome sequencing method combin...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/s12864-017-3714-6
更新日期:2017-04-24 00:00:00
abstract:BACKGROUND:microRNA (miRNA) expression plays an influential role in cancer classification and malignancy, and miRNAs are feasible as alternative diagnostic markers for pancreatic cancer, a highly aggressive neoplasm with silent early symptoms, high metastatic potential, and resistance to conventional therapies. METHOD...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/1471-2164-16-S9-S4
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND:Nicotiana benthamiana is a widely used model plant species for research on plant-pathogen interactions as well as other areas of plant science. It can be easily transformed or agroinfiltrated, therefore it is commonly used in studies requiring protein localization, interaction, or plant-based systems for pro...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/s12864-015-2209-6
更新日期:2015-12-01 00:00:00
abstract:BACKGROUND:Pharmacological and gene ablation studies have demonstrated the crucial role of the endocrine function of the heart as mediated by the polypeptide hormones ANF and BNP in the maintenance of cardiovascular homeostasis. The importance of these studies lies on the fact that hypertension and chronic congestive h...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/1471-2164-10-254
更新日期:2009-06-01 00:00:00
abstract:BACKGROUND:Helicobacter pylori is presumed to be co-evolved with its human host and is a highly diverse gastric pathogen at genetic levels. Ancient origins of H. pylori in the New World are still debatable. It is not clear how different waves of human migrations in South America contributed to the evolution of strain d...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/1471-2164-7-191
更新日期:2006-07-27 00:00:00
abstract:BACKGROUND:Candida albicans is an opportunistic pathogenic yeast, which could become pathogenic in various stressful environmental factors including the spaceflight environment. In this study, we aim to explore the phenotypic changes and possible mechanisms of C. albicans after exposure to spaceflight conditions. RESU...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/s12864-020-6476-5
更新日期:2020-01-17 00:00:00
abstract:BACKGROUND:Decapods are an order of crustaceans which includes shrimps, crabs, lobsters and crayfish. They occur worldwide and are of great scientific interest as well as being of ecological and economic importance in fisheries and aquaculture. However, our knowledge of their biology mainly comes from the group which i...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/s12864-019-6433-3
更新日期:2020-01-09 00:00:00
abstract:BACKGROUND:Parkinson's disease (PD) is a chronic progressive neurodegenerative disorder that is clinically defined in terms of motor symptoms. These are preceded by prodromal non-motor manifestations that prove the systemic nature of the disease. Identifying genes and pathways altered in living patients provide new inf...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/s12864-015-2058-3
更新日期:2015-10-28 00:00:00
abstract:BACKGROUND:Linguistic, cultural and genetic characteristics of the Malagasy suggest that both Africans and Island Southeast Asians were involved in the colonization of Madagascar. Populations from the Indonesian archipelago played an especially important role because linguistic evidence suggests that the Malagasy langu...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/s12864-015-1394-7
更新日期:2015-03-17 00:00:00
abstract:BACKGROUND:It is believed that the main factors of low prenatal growth in mammals are genetic and environmental. We used isogenic mice maintained in standard conditions to analyze how natural non-genetic microsomia (low birth weight) is produced in inbred mice and its long term effect on health. To better understand th...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/1471-2164-15-327
更新日期:2014-05-01 00:00:00
abstract:BACKGROUND:Short non-coding RNAs (ncRNAs) perform their cellular functions in ribonucleoprotein (RNP) complexes, which are also essential for maintaining the stability of the ncRNAs. Depletion of individual protein components of non-coding ribonucleoprotein (ncRNP) particles by RNA interference (RNAi) may therefore aff...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/1471-2164-9-278
更新日期:2008-06-11 00:00:00
abstract:BACKGROUND:Periodic spacing of A-tracts (short runs of A or T) with the DNA helical period of ~10-11 bp is characteristic of intrinsically bent DNA. In eukaryotes, the DNA bending is related to chromatin structure and nucleosome positioning. However, the physiological role of strong sequence periodicity detected in man...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/1471-2164-13-188
更新日期:2012-05-15 00:00:00
abstract:BACKGROUND:There is strong but mostly circumstantial evidence that genetic factors modulate the severity of influenza infection in humans. Using genetically diverse but fully inbred strains of mice it has been shown that host sequence variants have a strong influence on the severity of influenza A disease progression. ...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/1471-2164-13-411
更新日期:2012-08-20 00:00:00
abstract:BACKGROUND:Age-related gene expression patterns of Homo sapiens as well as of model organisms such as Mus musculus, Saccharomyces cerevisiae, Caenorhabditis elegans and Drosophila melanogaster are a basis for understanding the genetic mechanisms of ageing. For an effective analysis and interpretation of expression prof...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/1471-2164-12-262
更新日期:2011-05-24 00:00:00
abstract:BACKGROUND:Venomous animals incapacitate their prey using complex venoms that can contain hundreds of unique protein toxins. The realisation that many of these toxins may have pharmaceutical and insecticidal potential due to their remarkable potency and selectivity against target receptors has led to an explosion in th...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/1471-2164-10-375
更新日期:2009-08-13 00:00:00
abstract:BACKGROUND:RNA amplification is necessary for profiling gene expression from small tissue samples. Previous studies have shown that the T7 based amplification techniques are reproducible but may distort the true abundance of targets. However, the consequences of such distortions on the ability to detect biological vari...
journal_title:BMC genomics
pub_type: 杂志文章
doi:10.1186/1471-2164-7-252
更新日期:2006-10-09 00:00:00