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Functional & Integrative Genomics

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https://www.readbyqxmd.com/read/28078489/identification-and-profiling-of-conserved-and-novel-micrornas-involved-in-oil-and-oleic-acid-production-during-embryogenesis-in-carya-cathayensis-sarg
#1
Zhengjia Wang, Ruiming Huang, Zhichao Sun, Tong Zhang, Jianqin Huang
MicroRNAs (miRNAs) are important regulators of plant development and fruit formation. Mature embryos of hickory (Carya cathayensis Sarg.) nuts contain more than 70% oil (comprising 90% unsaturated fatty acids), along with a substantial amount of oleic acid. To understand the roles of miRNAs involved in oil and oleic acid production during hickory embryogenesis, three small RNA libraries from different stages of embryogenesis were constructed. Deep sequencing of these three libraries identified 95 conserved miRNAs with 19 miRNA*s, 7 novel miRNAs (as well as their corresponding miRNA*s), and 26 potentially novel miRNAs...
January 11, 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/28070736/genome-wide-analysis-of-mirnas-and-tasi-rnas-in-zea-mays-in-response-to-phosphate-deficiency
#2
Saurabh Gupta, Manju Kumari, Himansu Kumar, Pritish Kumar Varadwaj
Globally important cereal crop maize provides important nutritions and starch in dietary foods. Low phosphate (LPi) availability in the soil frequently limits the maize quality and yield across the world. Small non-coding RNAs (Snc-RNAs) play crucial roles in growth and adaptation of plants to the environment. Snc-RNAs like microRNAs (miRs) and trans-acting small interfering RNAs (Tasi-Rs) play important functions in posttranscriptional regulation of gene expression, which controls plant development, reproduction, and biotic/abiotic stress responses...
January 9, 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/28058509/erratum-to-transcriptomics-analysis-of-hulless-barley-during-grain-development-with-a-focus-on-starch-biosynthesis
#3
Yawei Tang, Xingquan Zeng, Yulin Wang, Lijun Bai, Qijun Xu, Zexiu Wei, Hongjun Yuan, Tashi Nyima
No abstract text is available yet for this article.
January 5, 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/28032247/a-systemic-identification-approach-for-primary-transcription-start-site-of-arabidopsis-mirnas-from-multidimensional-omics-data
#4
Qi You, Hengyu Yan, Yue Liu, Xin Yi, Kang Zhang, Wenying Xu, Zhen Su
The 22-nucleotide non-coding microRNAs (miRNAs) are mostly transcribed by RNA polymerase II and are similar to protein-coding genes. Unlike the clear process from stem-loop precursors to mature miRNAs, the primary transcriptional regulation of miRNA, especially in plants, still needs to be further clarified, including the original transcription start site, functional cis-elements and primary transcript structures. Due to several well-characterized transcription signals in the promoter region, we proposed a systemic approach integrating multidimensional "omics" (including genomics, transcriptomics, and epigenomics) data to improve the genome-wide identification of primary miRNA transcripts...
December 28, 2016: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/28011999/transcriptome-response-and-developmental-implications-of-rnai-mediated-odc-knockdown-in-tobacco
#5
Ami Choubey, M V Rajam
Polyamines (PAs) are ubiquitously present polycationic compounds that play a critical role in various growth and developmental processes including stress responses in plants. Yet, their specific functions and mode of action remain largely unknown. In the present study, we have targeted tobacco ornithine decarboxylase gene (ODC) by RNA interference to modulate cellular PA levels and study the effects at different developmental time points. Down-regulation of ODC resulted in significant physiological and morphological anomalies including reduced leaf size, reduced chlorophyll and carotene content, decreased abiotic stress tolerance, early onset of senescence, delayed flowering, partial male and female sterility, reduced seed setting, delayed seed germination, reduced seed viability, and poor in vitro regeneration response from leaf explants...
December 24, 2016: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/27999965/genotypic-dependent-effects-of-n-fertilizer-glutathione-silicon-zinc-and-selenium-on-proteomic-profiles-amino-acid-contents-and-quality-of-rice-genotypes-with-contrasting-grain-cd-accumulation
#6
Fangbin Cao, Manman Fu, Runfeng Wang, Wangda Cheng, Guoping Zhang, Feibo Wu
Soil heavy metal (HM) contamination has posed a serious problem for safe food production. For restricting the translocation of HM into grain, many proteins were regulated to involve in the process. To identify these proteins, 2D-based proteomic analysis was carried out using different rice genotypes with distinct Cd accumulation in grains and as affected by an alleviating regulator (AR) in field experiments. AR application improved grain quality, with increased contents in Glu, Cys, His, Pro, and protein. Twenty-six low-grain HM accumulation-associated protein species were identified and categorized as physiological functions via two-dimensional gel electrophoresis (2DE) and mass spectrometry...
December 20, 2016: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/27866284/a-syntenic-locus-on-buffalo-chromosome-20-novel-genomic-hotspot-for-mirnas-involved-in-follicular-luteal-transition
#7
Vijay Simha Baddela, Suneel Kumar Onteru, Dheer Singh
The developmental reorganization of ovarian follicular granulosa cells (GC) during follicular maturation, ovulation, and luteinization require a well-controlled regulation of dynamic gene expression profiles. Recently, microRNAs (miRNAs) were found to be key players of ovarian follicular dynamics. The current study aimed to understand the miRNA regulatory role in follicular-luteal transition by characterizing the miRNA profile through miRNA-seq at different follicular (small, medium, and large) and luteal (early, mid, and late) stages in Indian water buffaloes, mono-ovulatory animals like humans...
November 19, 2016: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/27858182/migration-of-endophytic-diazotroph-azorhizobium-caulinodans-ors571-inside-wheat-triticum-aestivum-l-and-its-effect-on-micrornas
#8
Li Qiu, Qiang Li, Junbiao Zhang, Yongchao Chen, Xiaojun Lin, Chao Sun, Weiling Wang, Huawei Liu, Baohong Zhang
Azorhizobium caulinodans ORS571, a novel rhizobium, forms endosymbionts with its nature host Sesbania rostrata, a semi-aquatic leguminous tree. Recent studies showed that A. caulinodans ORS571, as endophytic rhizobium, disseminated and colonized inside of cereal plants. However, how this rhizobium infects monocot plants and the regulatory mechanism remains unknown. MicroRNAs (miRNAs) are small, endogenous RNAs that regulate gene expression at the post-transcriptional levels. In this study, we employed laser scanning confocal microscope to monitor the pathway that rhizobium invade wheat; we also investigated the potential role of miRNAs during A...
November 18, 2016: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/27913887/transcriptomics-analysis-of-hulless-barley-during-grain-development-with-a-focus-on-starch-biosynthesis
#9
Yawei Tang, Xingquan Zeng, Yulin Wang, Lijun Bai, Qijun Xu, Zexiu Wei, Hongjun Yuan, Tashi Nyima
Hulless barley, with its unique nutritional value and potential health benefits, has increasingly attracted attentions in recent years. However, the transcription dynamics during hulless barley grain development is not well understood. In the present study, we investigated the transcriptome changes during barley grain development using Illumina paired-end RNA-sequencing. Two datasets of the developing grain transcriptomes from two barley landraces with the differential seed starch synthesis traits were generated, and comparative transcriptome approach in both genotypes was performed...
January 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/27900504/a-large-scale-chromosome-specific-snp-discovery-guideline
#10
Bala Ani Akpinar, Stuart Lucas, Hikmet Budak
Single-nucleotide polymorphisms (SNPs) are the most prevalent type of variation in genomes that are increasingly being used as molecular markers in diversity analyses, mapping and cloning of genes, and germplasm characterization. However, only a few studies reported large-scale SNP discovery in Aegilops tauschii, restricting their potential use as markers for the low-polymorphic D genome. Here, we report 68,592 SNPs found on the gene-related sequences of the 5D chromosome of Ae. tauschii genotype MvGB589 using genomic and transcriptomic sequences from seven Ae...
January 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/27896456/dna-copy-number-profiling-in-microsatellite-stable-and-microsatellite-unstable-hereditary-non-polyposis-colorectal-cancers-by-targeted-cnv-array
#11
Weixiang Chen, Jun Ding, Long Jiang, Zebing Liu, Xiaoyan Zhou, Daren Shi
About half of hereditary non-polyposis colorectal cancers (HNPCCs) fulfilling the Amsterdam criteria (AC) do not display evidence of mismatch repair defects, and the difference between microsatellite-stable (MSS) and microsatellite-unstable HNPCC remains poorly understood. The study was to compare overall copy number variation (CNV) and loss of heterozygosity (LOH) of the entire genome in HNPCCs with MSS and microsatellite-instability (MSI) using the Cytoscan HD Array. This was a study carried out in samples from 20 patients with MSS HNPCC and four patients with MSI HNPCC from the Fudan University Shanghai Cancer Center (China)...
January 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/27885507/erratum-to-genomic-and-functional-features-of-the-biosurfactant-producing-bacillus-sp-am13
#12
Shraddha Shaligram, Shreyas V Kumbhare, Dhiraj P Dhotre, Manohar G Muddeshwar, Atya Kapley, Neetha Joseph, Hemant J Purohit, Yogesh S Shouche, Shrikant P Pawar
No abstract text is available yet for this article.
January 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/27848097/transcription-dynamics-of-saltol-qtl-localized-genes-encoding-transcription-factors-reveals-their-differential-regulation-in-contrasting-genotypes-of-rice
#13
Kamlesh K Nutan, Hemant R Kushwaha, Sneh L Singla-Pareek, Ashwani Pareek
Salinity is one of the major environmental factors affecting the growth and yield of rice crop. Salinity stress response is a multigenic trait and numerous approaches have been used to dissect out the key determinants of complex salt tolerance trait and their regulation in plant. In the current study, we have investigated expression dynamics of the genes encoding transcription factors (SalTFs) localized within a major salinity tolerance related QTL-'Saltol' in the contrasting cultivars of rice. SalTFs were found to be differentially regulated between the contrasting genotypes of rice, with higher constitutive expression in the salt tolerant landrace, Pokkali than the cultivar IR64...
January 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/27819121/analysis-of-the-interplay-between-methylation-and-expression-reveals-its-potential-role-in-cancer-aetiology
#14
Bugra Ozer, Ugur Sezerman
With ongoing developments in technology, changes in DNA methylation levels have become prevalent to study cancer biology. Previous studies report that DNA methylation affects gene expression in a direct manner, most probably by blocking gene regulatory regions. In this study, we have studied the interplay between methylation and expression to improve our knowledge of cancer aetiology. For this purpose, we have investigated which genomic regions are of higher importance; hence, first exon, 5'UTR and 200 bp near the transcription start sites are proposed as being more crucial compared to other genomic regions...
January 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/27778111/alr2954-of-anabaena-sp-pcc-7120-with-adp-ribose-pyrophosphatase-activity-bestows-abiotic-stress-tolerance-in-escherichia-coli
#15
Prashant Kumar Singh, Alok Kumar Shrivastava, Shilpi Singh, Ruchi Rai, Antra Chatterjee, L C Rai
In silico derived properties on experimental validation revealed that hypothetical protein Alr2954 of Anabaena sp. PCC7120 is ADP-ribose pyrophosphatase, which belongs to nudix hydrolase superfamily. Presence of ADP-ribose binding site was attested by ADP-ribose pyrophosphatase activity (K m 44.71 ± 8.043 mM, V max 7.128 ± 0.417 μmol min(-1) mg protein(-1), and K cat/K m 9.438 × 10(4) μM(-)1 min(-1)). Besides ADP-ribose, the enzyme efficiently hydrolyzed various nucleoside phosphatases such as 8-oxo-dGDP, 8-oxo-dADP, 8-oxo-dGTP, 8-oxo-dATP, GDP-mannose, ADP-glucose, and NADH...
January 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/27778110/surface-proteome-mining-for-identification-of-potential-vaccine-candidates-against-campylobacter-jejuni-an-in-silico-approach
#16
Kusum Mehla, Jayashree Ramana
Campylobacter jejuni remains a major cause of human gastroenteritis with estimated annual incidence rate of 450 million infections worldwide. C. jejuni is a major burden to public health in both socioeconomically developing and industrialized nations. Virulence determinants involved in C. jejuni pathogenesis are multifactorial in nature and not yet fully understood. Despite the completion of the first C. jejuni genome project in 2000, there are currently no vaccines in the market against this pathogen. Traditional vaccinology approach is an arduous and time extensive task...
January 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/27709374/exploring-drought-stress-regulated-genes-in-senna-cassia-angustifolia-vahl-a-transcriptomic-approach
#17
Rucha Harishbhai Mehta, Manivel Ponnuchamy, Jitendra Kumar, Nagaraja Reddy Rama Reddy
De novo assembly of reads produced by next-generation sequencing (NGS) technologies offers a rapid approach to obtain expressed gene sequences for non-model organisms. Senna (Cassia angustifolia Vahl.) is a drought-tolerant annual undershrub of Caesalpiniaceae, a subfamily of Fabaceae. There are insufficient transcriptomic and genomic data in public databases for understanding the molecular mechanism underlying the drought tolerance of senna. Therefore, the main purpose of this study was to know the transcriptome profile of senna, with special reference to drought stress...
January 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/27709373/novel-snps-and-indels-discovered-in-two-promoter-regions-of-porcine-pregnancy-associated-glycoprotein-2-like-subfamily-ppag2-ls-in-crossbreed-pigs
#18
Martyna Bieniek-Kobuszewska, Grzegorz Panasiewicz, Aleksandra Lipka, Marta Majewska, Bozena Szafranska
This is a pioneer study of single nucleotide polymorphisms (SNPs) within the entire promoter region (1204 bp) of the dominant pPAG2-L subfamily in the pig. The pPAG2-L subfamily was sequenced/examined using genomic deoxyribonucleic acid (gDNA) templates of crossbreed pigs (Landrace x Large White), and compared to two bacterial artificial chromosome (BAC) clones containing gDNA of the Duroc breed (as the positive controls). Our analysis of the pPAG2-L promoter identified 31 SNPs and one InDel mutation in crossbreed pigs...
November 2016: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/27709372/genomic-analyses-identify-agents-regulating-somatotroph-and-lactotroph-functions
#19
Jun Fan, Cui Zhang, Qi Chen, Jin Zhou, Jean-Louis Franc, Qing Chen, Yunguang Tong
Isolated hormone deficiency might be caused by loss of a specific type of endocrine cells, and regenerating these missing cells may provide a new option for future treatment. It is known that POU1F1 lineage cells can differentiate into thyrotroph, somatotroph, and lactotroph. However, there is no effective way of controlling pituitary stem/progenitor cells to differentiate into a specific type of endocrine cell. We thereby analyzed multiple genomic publications related to POU1F1 and pituitary development in this study to identify genes and agents regulating POU1F1 lineage cell differentiation...
November 2016: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/27632199/a-comparative-analysis-of-the-evolution-expression-and-cis-regulatory-element-of-polygalacturonase-genes-in-grasses-and-dicots
#20
Ying Liang, Youjian Yu, Jinlong Cui, Meiling Lyu, Liai Xu, Jiashu Cao
Cell walls are a distinguishing characteristic of plants essential to their survival. The pectin content of primary cell walls in grasses and dicots is distinctly different. Polygalacturonases (PGs) can degrade pectins and participate in multiple developmental processes of plants. This study comprehensively compared the evolution, expression, and cis-regulatory element of PGs in grasses and dicots. A total of 577 PGs identified from five grasses and five dicots fell into seven clades. Evolutionary analysis demonstrated the distinct differences between grasses and dicots in patterns of gene duplication and loss, and evolutionary rates...
November 2016: Functional & Integrative Genomics
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