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BMC Genomics

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https://www.readbyqxmd.com/read/28427349/genome-wide-survey-of-mirnas-and-their-evolutionary-history-in-the-ascidian-halocynthia-roretzi
#1
Kai Wang, Christelle Dantec, Patrick Lemaire, Takeshi A Onuma, Hiroki Nishida
BACKGROUND: miRNAs play essential roles in the modulation of cellular functions via degradation and/or translation attenuation of target mRNAs. They have been surveyed in a single ascidian genus, Ciona. Recently, an annotated draft genome sequence for a distantly related ascidian, Halocynthia roretzi, has become available, but miRNAs in H. roretzi have not been previously studied. RESULTS: We report the prediction of 319 candidate H. roretzi miRNAs, obtained through three complementary methods...
April 20, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28427347/comparative-transcriptomics-of-mountain-pine-beetle-pheromone-biosynthetic-tissues-and-functional-analysis-of-cyp6de3
#2
J A Nadeau, J Petereit, R L Tillett, K Jung, M Fotoohi, M MacLean, S Young, K Schlauch, G J Blomquist, C Tittiger
BACKGROUND: The mountain pine beetle (MPB, Dendroctonus ponderosae Hopkins) is a highly destructive pest of pine forests in western North America. During flight to a new host tree and initiation of feeding, mountain pine beetles release aggregation pheromones. The biosynthetic pathways of these pheromones are sex-specific and localized in the midgut and fat body, but the enzymes involved have not all been identified or characterized. RESULTS: We used a comparative RNA-Seq analysis between fed and unfed male and female MPB midguts and fat bodies to identify candidate genes involved in pheromone biosynthesis...
April 20, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28427344/genome-wide-identification-of-genes-probably-relevant-to-the-adaptation-of-schizothoracins-teleostei-cypriniformes-to-the-uplift-of-the-qinghai-tibet-plateau
#3
Wei Chi, Xufa Ma, Jiangong Niu, Ming Zou
BACKGROUND: Molecular adaptation to the severe environments present during the uplift of the Qinghai-Tibet Plateau has attracted the attention of researchers. The divergence of the three specialization groups of schizothoracins (Primitive, Specialized and Highly Specialized) may correspond to the three phases of plateau uplift. Based on the transcripts of representative species of the three specialized groups and an outgroup, genes in schizothoracins that may have played important roles during the adaptation to new environments were investigated...
April 20, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28427331/erratum-to-more-comprehensive-forensic-genetic-marker-analyses-for-accurate-human-remains-identification-using-massively-parallel-dna-sequencing
#4
Angie D Ambers, Jennifer D Churchill, Jonathan L King, Monika Stoljarova, Harrell Gill-King, Mourad Assidi, Muhammad Abu-Elmagd, Abdelbaset Buhmeida, Mohammed Al-Qahtani, Bruce Budowle
No abstract text is available yet for this article.
April 20, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28427330/pan-genome-and-crispr-analyses-of-the-bacterial-fish-pathogen-moritella-viscosa
#5
Christian Karlsen, Erik Hjerde, Terje Klemetsen, Nils Peder Willassen
BACKGROUND: Winter-ulcer Moritella viscosa infections continue to be a significant burden in Atlantic salmon (Salmo salar L.) farming. M. viscosa comprises two main clusters that differ in genetic variation and phenotypes including virulence. Horizontal gene transfer through acquisition and loss of mobile genetic elements (MGEs) is a major driving force of bacterial diversification. To gain insight into genomic traits that could affect sublineage evolution within this bacterium we examined the genome sequences of twelve M...
April 20, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28427329/cross-disorder-comparative-analysis-of-comorbid-conditions-reveals-novel-autism-candidate-genes
#6
Leticia Diaz-Beltran, Francisco J Esteban, Maya Varma, Alp Ortuzk, Maude David, Dennis P Wall
BACKGROUND: Numerous studies have highlighted the elevated degree of comorbidity associated with autism spectrum disorder (ASD). These comorbid conditions may add further impairments to individuals with autism and are substantially more prevalent compared to neurotypical populations. These high rates of comorbidity are not surprising taking into account the overlap of symptoms that ASD shares with other pathologies. From a research perspective, this suggests common molecular mechanisms involved in these conditions...
April 20, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28427327/analysis-of-transcriptome-data-reveals-multifactor-constraint-on-codon-usage-in-taenia-multiceps
#7
Xing Huang, Jing Xu, Lin Chen, Yu Wang, Xiaobin Gu, Xuerong Peng, Guangyou Yang
BACKGROUND: Codon usage bias (CUB) is an important evolutionary feature in genomes that has been widely observed in many organisms. However, the synonymous codon usage pattern in the genome of T. multiceps remains to be clarified. In this study, we analyzed the codon usage of T. multiceps based on the transcriptome data to reveal the constraint factors and to gain an improved understanding of the mechanisms that shape synonymous CUB. RESULTS: Analysis of a total of 8,620 annotated mRNA sequences from T...
April 20, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28427325/global-analysis-of-protein-lysine-succinylation-profiles-in-common-wheat
#8
Yumei Zhang, Guangyuan Wang, Limin Song, Ping Mu, Shu Wang, Wenxing Liang, Qi Lin
BACKGROUND: Protein lysine succinylation is an important post-translational modification and plays a critical regulatory role in almost every aspects of cell metabolism in both eukaryotes and prokaryotes. Common wheat is one of the major global cereal crops. However, to date, little is known about the functions of lysine succinylation in this plant. Here, we performed a global analysis of lysine succinylation in wheat and examined its overlap with lysine acetylation. RESULTS: In total, 330 lysine succinylated modification sites were identified in 173 proteins...
April 20, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28420345/selective-sweep-with-significant-positive-selection-serves-as-the-driving-force-for-the-differentiation-of-japonica-and-indica-rice-cultivars
#9
Yang Yuan, Qijun Zhang, Shuiyun Zeng, Longjiang Gu, Weina Si, Xiaohui Zhang, Dacheng Tian, Sihai Yang, Long Wang
BACKGROUND: Asian cultivated rice (Oryza sativa L.), including japonica and indica, is unarguable the most important crop in Asia as well as worldwide. However, a decisive conclusion of its origination and domestication processes are still lacking. Nowadays, the ever-increasing high-throughput sequencing data of numerous rice samples have provided us new opportunities to get close to the answer of these questions. RESULTS: By compiling 296 whole-genome sequenced rice cultivars and 39 diverse wild rice, two types of domesticated regions (DR-I and DR-II) with strong selective sweep signals between different groups were detected...
April 19, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28420340/genetics-and-mapping-of-a-new-anthracnose-resistance-locus-in-andean-common-bean-paloma
#10
Sandra Aparecida de Lima Castro, Maria Celeste Gonçalves-Vidigal, Thiago Alexandre Santana Gilio, Giselly Figueiredo Lacanallo, Giseli Valentini, Vanusa da Silva Ramos Martins, Qijian Song, Marta Zulema Galván, Oscar P Hurtado-Gonzales, Marcial Antonio Pastor-Corrales
BACKGROUND: The Andean cultivar Paloma is resistant to Mesoamerican and Andean races of Colletotrichum lindemuthianum, the fungal pathogen that causes the destructive anthracnose disease in common bean. Remarkably, Paloma is resistant to Mesoamerican races 2047 and 3481, which are among the most virulent races of the anthracnose pathogen. Most genes conferring anthracnose resistance in common bean are overcome by these races. The genetic mapping and the relationship between the resistant Co-Pa gene of Paloma and previously characterized anthracnose resistance genes can be a great contribution for breeding programs...
April 18, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28420336/reduced-changes-in-protein-compared-to-mrna-levels-across-non-proliferating-tissues
#11
Kobi Perl, Kathy Ushakov, Yair Pozniak, Ofer Yizhar-Barnea, Yoni Bhonker, Shaked Shivatzki, Tamar Geiger, Karen B Avraham, Ron Shamir
BACKGROUND: The quantitative relations between RNA and protein are fundamental to biology and are still not fully understood. Across taxa, it was demonstrated that the protein-to-mRNA ratio in steady state varies in a direction that lessens the change in protein levels as a result of changes in the transcript abundance. Evidence for this behavior in tissues is sparse. We tested this phenomenon in new data that we produced for the mouse auditory system, and in previously published tissue datasets...
April 18, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28415976/smrt-genome-assembly-corrects-reference-errors-resolving-the-genetic-basis-of-virulence-in-mycobacterium-tuberculosis
#12
Afif Elghraoui, Samuel J Modlin, Faramarz Valafar
BACKGROUND: The genetic basis of virulence in Mycobacterium tuberculosis has been investigated through genome comparisons of virulent (H37Rv) and attenuated (H37Ra) sister strains. Such analysis, however, relies heavily on the accuracy of the sequences. While the H37Rv reference genome has had several corrections to date, that of H37Ra is unmodified since its original publication. RESULTS: Here, we report the assembly and finishing of the H37Ra genome from single-molecule, real-time (SMRT) sequencing...
April 17, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28415971/an-evolutionarily-conserved-transcriptional-response-to-viral-infection-in-caenorhabditis-nematodes
#13
Kevin Chen, Carl J Franz, Hongbing Jiang, Yanfang Jiang, David Wang
BACKGROUND: Caenorhabditis elegans is a powerful model organism for probing many biological processes including host-pathogen interactions with bacteria and fungi. The recent identification of nematode viruses that naturally infect C. elegans and Caenorhabditis briggsae provides a unique opportunity to define host-virus interactions in these model hosts. RESULTS: We analyzed the transcriptional response of pathogen infected C. elegans and C. briggsae by RNA-seq...
April 17, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28415970/drosophila-melanogaster-retrotransposon-and-inverted-repeat-derived-endogenous-sirnas-are-differentially-processed-in-distinct-cellular-locations
#14
Andrew W Harrington, Michael R McKain, Daniel Michalski, Kaylyn M Bauer, Joshua M Daugherty, Mindy Steiniger
BACKGROUND: Endogenous small interfering (esi)RNAs repress mRNA levels and retrotransposon mobility in Drosophila somatic cells by poorly understood mechanisms. 21 nucleotide esiRNAs are primarily generated from retrotransposons and two inverted repeat (hairpin) loci in Drosophila culture cells in a Dicer2 dependent manner. Additionally, proteins involved in 3' end processing, such as Symplekin, CPSF73 and CPSR100, have been recently implicated in the esiRNA pathway. RESULTS: Here we present evidence of overlap between two essential RNA metabolic pathways: esiRNA biogenesis and mRNA 3' end processing...
April 17, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28412930/large-scale-analysis-of-post-translational-modifications-in-e-coli-under-glucose-limiting-conditions
#15
Colin W Brown, Viswanadham Sridhara, Daniel R Boutz, Maria D Person, Edward M Marcotte, Jeffrey E Barrick, Claus O Wilke
BACKGROUND: Post-translational modification (PTM) of proteins is central to many cellular processes across all domains of life, but despite decades of study and a wealth of genomic and proteomic data the biological function of many PTMs remains unknown. This is especially true for prokaryotic PTM systems, many of which have only recently been recognized and studied in depth. It is increasingly apparent that a deep sampling of abundance across a wide range of environmental stresses, growth conditions, and PTM types, rather than simply cataloging targets for a handful of modifications, is critical to understanding the complex pathways that govern PTM deposition and downstream effects...
April 17, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28412928/poplar-stem-transcriptome-is-massively-remodelled-in-response-to-single-or-repeated-mechanical-stimuli
#16
Lise Pomiès, Mélanie Decourteix, Jérôme Franchel, Bruno Moulia, Nathalie Leblanc-Fournier
BACKGROUND: Trees experience mechanical stimuli -like wind- that trigger thigmomorphogenetic syndrome, leading to modifications of plant growth and wood quality. This syndrome affects tree productivity but is also believed to improve tree acclimation to chronic wind. Wind is particularly challenging for trees, because of their stature and perenniality. Climate change forecasts are predicting that the occurrence of high wind will worsen, making it increasingly vital to understand the mechanisms regulating thigmomorphogenesis, especially in perennial plants...
April 17, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28407801/single-base-resolution-methylomes-of-upland-cotton-gossypium-hirsutum-l-reveal-epigenome-modifications-in-response-to-drought-stress
#17
Xuke Lu, Xiaoge Wang, Xiugui Chen, Na Shu, Junjuan Wang, Delong Wang, Shuai Wang, Weili Fan, Lixue Guo, Xiaoning Guo, Wuwei Ye
BACKGROUND: DNA methylation, with a cryptic role in genome stability, gene transcription and expression, is involved in the drought response process in plants, but the complex regulatory mechanism is still largely unknown. RESULTS: Here, we performed whole-genome bisulfite sequencing (WGBS) and identified long non-coding RNAs on cotton leaves under drought stress and re-watering treatments. We obtained 31,223 and 30,997 differentially methylated regions (representing 2...
April 13, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28407798/utilization-of-defined-microbial-communities-enables-effective-evaluation-of-meta-genomic-assemblies
#18
William W Greenwald, Niels Klitgord, Victor Seguritan, Shibu Yooseph, J Craig Venter, Chad Garner, Karen E Nelson, Weizhong Li
BACKGROUND: Metagenomics is the study of the microbial genomes isolated from communities found on our bodies or in our environment. By correctly determining the relation between human health and the human associated microbial communities, novel mechanisms of health and disease can be found, thus enabling the development of novel diagnostics and therapeutics. Due to the diversity of the microbial communities, strategies developed for aligning human genomes cannot be utilized, and genomes of the microbial species in the community must be assembled de novo...
April 13, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28407753/genomic-characterization-of-two-novel-pathogenic-avipoxviruses-isolated-from-pacific-shearwaters-ardenna-spp
#19
Subir Sarker, Shubhagata Das, Jennifer L Lavers, Ian Hutton, Karla Helbig, Jacob Imbery, Chris Upton, Shane R Raidal
BACKGROUND: Over the past 20 years, many marine seabird populations have been gradually declining and the factors driving this ongoing deterioration are not always well understood. Avipoxvirus infections have been found in a wide range of bird species worldwide, however, very little is known about the disease ecology of avian poxviruses in seabirds. Here we present two novel avipoxviruses from pacific shearwaters (Ardenna spp), one from a Flesh-footed Shearwater (A. carneipes) (SWPV-1) and the other from a Wedge-tailed Shearwater (A...
April 13, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28407751/transcriptome-analysis-reveals-potential-mechanisms-underlying-differential-heart-development-in-fast-and-slow-growing-broilers-under-heat-stress
#20
Jibin Zhang, Carl J Schmidt, Susan J Lamont
BACKGROUND: Modern fast-growing broilers are susceptible to heart failure under heat stress because their relatively small hearts cannot meet increased need of blood pumping. To improve the cardiac tolerance to heat stress in modern broilers through breeding, we need to find the important genes and pathways that contribute to imbalanced cardiac development and frequent occurrence of heat-related heart dysfunction. Two broiler lines - Ross 708 and Illinois - were included in this study as a fast-growing model and a slow-growing model respectively...
April 13, 2017: BMC Genomics
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