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BMC Genomics

Joan Pons, Pere Bover, Leticia Bidegaray-Batista, Miquel A Arnedo
BACKGROUND: In recent years, Next Generation Sequencing (NGS) has accelerated the generation of full mitogenomes, providing abundant material for studying different aspects of molecular evolution. Some mitogenomes have been observed to harbor atypical sequences with bizarre secondary structures, which origins and significance could only be fully understood in an evolutionary framework. RESULTS: Here we report and analyze the mitochondrial sequences and gene arrangements of six closely related spiders in the sister genera Parachtes and Harpactocrates, which belong to the nocturnal, ground dwelling family Dysderidae...
August 23, 2019: BMC Genomics
Vasudevan Ayyappan, Venkateswara R Sripathi, Venu Kal Kalavacharla, Malay C Saha, Jyothi Thimmapuram, Ketaki P Bhide, Elizabeth Fiedler
BACKGROUND: Histone modifications play a significant role in the regulation of transcription and various biological processes, such as development and regeneration. Though a few genomic (including DNA methylation patterns) and transcriptomic studies are currently available in switchgrass, the genome-wide distribution of histone modifications has not yet been studied to help elucidate gene regulation and its application to switchgrass improvement. RESULTS: This study provides a comprehensive epigenomic analyses of two contrasting switchgrass ecotypes, lowland (AP13) and upland (VS16), by employing chromatin immunoprecipitation sequencing (ChIP-Seq) with two histone marks (suppressive- H3K9me2 and active- H4K12ac )...
August 22, 2019: BMC Genomics
Qiang Liu, Aisheng Hou, Yongyi Zhang, Ying Guo, Jingjing Li, Yinghao Yao, Kaimeng Niu, Hao Li, Yunlong Ma, Jiangbei Cao
BACKGROUND: Postoperative cognitive dysfunction (POCD) affects a large number of post-surgery patients, especially for the elderly. However, the etiology of this neurocognitive disorder is largely unknown. Even if several studies have reported a small number of miRNAs as the essential modulatory factors in POCD, these findings are still rather limited. The aim of current study was to screen the POCD-related miRNAs in the hippocampus tissues and investigate the target genes of differentially expressed miRNAs and their biological functions underlying POCD pathophysiology...
August 22, 2019: BMC Genomics
Jun Yan, Peisen Su, Wen Li, Guilian Xiao, Yan Zhao, Xin Ma, Hongwei Wang, Eviatar Nevo, Lingrang Kong
BACKGROUND: The class III peroxidase (PRX) gene family is a plant-specific member of the PRX superfamily that is closely related to various physiological processes, such as cell wall loosening, lignification, and abiotic and biotic stress responses. However, its classification, evolutionary history and gene expression patterns are unclear in wheat and Aegilops tauschii. RESULTS: Here, we identified 374, 159 and 169 PRXs in Triticum aestivum, Triticum urartu and Ae...
August 22, 2019: BMC Genomics
Evangeline S Ballerini, Elena M Kramer, Scott A Hodges
BACKGROUND: Petal nectar spurs, which facilitate pollination through animal attraction and pollen placement, represent a key innovation promoting diversification in the genus Aquilegia (Ranunculaceae). Identifying the genetic components that contribute to the development of these three-dimensional structures will inform our understanding of the number and types of genetic changes that are involved in the evolution of novel traits. In a prior study, gene expression between two regions of developing petals, the laminar blade and the spur cup, was compared at two developmental stages in the horticultural variety A...
August 22, 2019: BMC Genomics
Gabriel Costa Monteiro Moreira, Mayara Salvian, Clarissa Boschiero, Aline Silva Mello Cesar, James M Reecy, Thaís Fernanda Godoy, Mônica Corrêa Ledur, Dorian Garrick, Gerson Barreto Mourão, Luiz L Coutinho
BACKGROUND: Poultry breeding programs have been focused on improvement of growth and carcass traits, however, this has resulted in correlated changes in internal organ weights and increased incidence of metabolic disorders. These disorders can affect feed efficiency or even cause death. We used a high density SNP array (600 K, Affymetrix) to estimate genomic heritability, perform genome-wide association analysis, and identify genomic regions and positional candidate genes (PCGs) associated with internal organ traits in an F2 chicken population...
August 22, 2019: BMC Genomics
Eugeni Belda, Ferdinand Nanfack-Minkeu, Karin Eiglmeier, Guillaume Carissimo, Inge Holm, Mawlouth Diallo, Diawo Diallo, Amélie Vantaux, Saorin Kim, Igor V Sharakhov, Kenneth D Vernick
BACKGROUND: Mosquitoes are colonized by a large but mostly uncharacterized natural virome of RNA viruses, and the composition and distribution of the natural RNA virome may influence the biology and immunity of Anopheles malaria vector populations. RESULTS: Anopheles mosquitoes were sampled in malaria endemic forest village sites in Senegal and Cambodia, including Anopheles funestus, Anopheles gambiae group sp., and Anopheles coustani in Senegal, and Anopheles hyrcanus group sp...
August 20, 2019: BMC Genomics
Izabela Coimbra Ibraim, Mariana Teixeira Dornelles Parise, Doglas Parise, Michelle Zibetti Tadra Sfeir, Thiago Luiz de Paula Castro, Alice Rebecca Wattam, Preetam Ghosh, Debmalya Barh, Emannuel Maltempi Souza, Aristóteles Góes-Neto, Anne Cybelle Pinto Gomide, Vasco Azevedo
BACKGROUND: Iron is an essential micronutrient for the growth and development of virtually all living organisms, playing a pivotal role in the proliferative capability of many bacterial pathogens. The impact that the bioavailability of iron has on the transcriptional response of bacterial species in the CMNR group has been widely reported for some members of the group, but it hasn't yet been as deeply explored in Corynebacterium pseudotuberculosis. Here we describe for the first time a comprehensive RNA-seq whole transcriptome analysis of the T1 wild-type and the Cp13 mutant strains of C...
August 20, 2019: BMC Genomics
Theo H M Smits
The quality of microbial genome sequences has been a concern ever since the emergence of genome sequencing. The quality of the genome assemblies is dependent on the sequencing technology used and the aims for which the sequence was generated. Novel sequencing and bioinformatics technologies are not intrinsically better than the older technologies, although they are generally more efficient. In this correspondence, the importance for comparative genomics of additional manual assembly efforts over autoassembly and careful annotation is emphasized...
August 20, 2019: BMC Genomics
Haron Salih, Wenfang Gong, Shoupu He, Wang Xia, Magwanga Richard Odongo, Xiongming Du
BACKGROUND: Long non-coding RNAs (LncRNAs) are part of genes, which are not translated into proteins and play a vital role in plant growth and development. Nevertheless, the presence of LncRNAs and how they functions in Ligon-lintless-1 mutant during the early cessation of cotton fiber development are still not well understood. In order to investigate the function of LncRNAs in cotton fiber development, it is necessary and important to identify LncRNAs and their potential roles in fiber cell development...
August 19, 2019: BMC Genomics
S Dreisigacker, R K Sharma, E Huttner, A Karimov, M Q Obaidi, P K Singh, C Sansaloni, R Shrestha, K Sonder, H-J Braun
BACKGROUND: Wheat is the most important staple crop in Afghanistan and accounts for the main part of cereal production. However, wheat production has been unstable during the last decades and the country depends on seed imports. Wheat research in Afghanistan has emphasized releases of new, high-yielding and disease resistant varieties but rates of adoption of improved varieties are uncertain. We applied DNA fingerprinting to assess wheat varieties grown in farmers' fields in four Afghan provinces...
August 19, 2019: BMC Genomics
Siyuan Zhu, Xiaojun Chen, Xia Liu, Jian Zhao, Touming Liu
BACKGROUND: Garlic bulbs are abnormal expanding axillary buds that are rarely found among vascular plants. Bulb-yield is one of the valuable agronomic traits of garlic. However, due to the large genome size and a strictly asexual life cycle in the cultivars, the genetic basis of the yield traits are poorly understood in garlic. RESULTS: In the present study, we carried out an association mapping for three yield traits of garlic bulbs: bulb weight (BW), diameter (BD), and the number of garlic cloves (CN), using the recently proposed transcriptome-referenced association study...
August 17, 2019: BMC Genomics
Farouk Messad, Isabelle Louveau, Basile Koffi, Hélène Gilbert, Florence Gondret
BACKGROUND: Improving feed efficiency (FE) is a major challenge in pig production. This complex trait is characterized by a high variability. Therefore, the identification of predictors of FE may be a relevant strategy to reduce phenotyping efforts in breeding and selection programs. The aim of this study was to investigate the suitability of expressed muscle genes in prediction of FE traits in growing pigs. The approach considered different transcriptomics experiments to cover a large range of FE values and identify reliable predictors...
August 17, 2019: BMC Genomics
Qi Wu, Xue Bai, Wei Zhao, Xiaodong Shi, Dabing Xiang, Yan Wan, Xiaoyong Wu, Yanxia Sun, Jianglin Zhao, Lianxin Peng, Gang Zhao
BACKGROUND: Inflorescence architecture is denoted by the spatial arrangement of various lateral branches and florets formed on them, which is shaped by a complex of regulators. Unveiling of the regulatory mechanisms underlying inflorescence architecture is pivotal for improving crop yield potential. Quinoa (Chenopodium quinoa Willd), a pseudo cereal originated from Andean region of South America, has been widely recognized as a functional super food due to its excellent nutritional elements...
August 17, 2019: BMC Genomics
He Ma, Ranwei Li, Xin Di, Xin Jin, Yan Wang, Bingjie Lai, Cailian Shi, Mingxin Ji, Xinran Zhu, Ke Wang
BACKGROUND: Adrenocortical adenomas (ACAs) can lead to the autonomous secretion of aldosterone responsible for primary aldosteronism (PA), which is the most common form of secondary arterial hypertension. However, the authentic fundamental mechanisms underlying ACAs remain unclear. OBJECTIVE: Isobaric tags for relative and absolute quantitation (iTRAQ)-based proteomics and bioinformatics analyses from etiological studies of ACAs were performed to screen the differentially expressed proteins (DEPs) and investigate the relevant mechanisms of their occurrence and development...
August 16, 2019: BMC Genomics
Wei Sun, Dong Chen, Yaqiang Xue, Lihong Zhai, Dan Zhang, Zheng Cao, Lei Liu, Chao Cheng, Yi Zhang, Zuxin Zhang
BACKGROUND: Argonaute proteins (AGOs) are important players in the regulation of plant development by directing sRNAs to target mRNAs. In maize (Zea mays), AGO18b is a tassel-enriched and grass-specific AGO. Previous studies have shown that AGO18b is highly expressed in tassels during meiosis and negatively regulates determinacy of spikelet meristems. However, binding profile on RNAs and acting mechanisms of AGO18b remain unknown. RESULTS: In this study, we explored the binding profile of AGO18b in maize tassel by UV cross-linking RNA immunoprecipitation, followed by deep sequencing of these cDNA libraries (cRIP-seq), and systematically studied AGO18b-associated small RNAs and mRNAs by bioinformatics analysis...
August 16, 2019: BMC Genomics
Saurabh Belsare, Michal Levy-Sakin, Yulia Mostovoy, Steffen Durinck, Subhra Chaudhuri, Ming Xiao, Andrew S Peterson, Pui-Yan Kwok, Somasekar Seshagiri, Jeffrey D Wall
BACKGROUND: Data from the 1000 Genomes project is quite often used as a reference for human genomic analysis. However, its accuracy needs to be assessed to understand the quality of predictions made using this reference. We present here an assessment of the genotyping, phasing, and imputation accuracy data in the 1000 Genomes project. We compare the phased haplotype calls from the 1000 Genomes project to experimentally phased haplotypes for 28 of the same individuals sequenced using the 10X Genomics platform...
August 16, 2019: BMC Genomics
Navneet Kaur, Wenbo Chen, Zhangjun Fei, William M Wintermantel
BACKGROUND: Cucurbit yellow stunting disorder virus (CYSDV; genus Crinivirus, Closteroviridae) is transmitted in a semipersistent manner by the whitefly, Bemisia tabaci, and is efficiently transmitted by the widely prevalent B. tabaci cryptic species, MEAM1. In this study, we compared transcriptome profiles of B. tabaci MEAM1, after 24 h, 72 h and 7 days of acquisition feeding on melon plants infected with CYSDV (CYSDV-whiteflies) with those fed on virus-free melon, using RNA-Seq technology...
August 15, 2019: BMC Genomics
Igor Marín de Mas, Laura Torrents, Carmen Bedia, Lars K Nielsen, Marta Cascante, Romà Tauler
BACKGROUND: Genome-scale metabolic models (GSMM) integrating transcriptomics have been widely used to study cancer metabolism. This integration is achieved through logical rules that describe the association between genes, proteins, and reactions (GPRs). However, current gene-to-reaction formulation lacks the stoichiometry describing the transcript copies necessary to generate an active catalytic unit, which limits our understanding of how genes modulate metabolism. The present work introduces a new state-of-the-art GPR formulation that considers the stoichiometry of the transcripts (S-GPR)...
August 15, 2019: BMC Genomics
Xingguo Zhang, Xingli Ma, Longlong Ning, Zhongfeng Li, Kunkun Zhao, Ke Li, Jialin He, Dongmei Yin
BACKGROUND: Circular RNAs (circRNAs), a class of widely expressed endogenous regulatory RNAs, are involved in diverse physiological and developmental processes in eukaryotic cells. However, there have been no related studies on the number of circRNAs and their overall characteristics including circRNA abundance and expression profiles in peanut, which is one of the most important edible oil seed crops in the world. RESULTS: We performed a genome-wide identification of circular RNAs using ribosomal-depleted RNA-sequencing from the seeds of two peanut eighth-generation recombinant inbred lines (RIL8): 'RIL 8106' (a medium-pod variety) and 'RIL 8107' (a super-pod variety), at 15 and 35 days after flowering (DAF), respectively...
August 15, 2019: BMC Genomics
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