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... Genomic analysis has revealed heterogeneity among bacterial 16S rRNA gene sequences within a single species; yet the cause(s) remains uncertain. Generalized transducing bacteriophages have recently gained recognition for their abundance as well as their ability to affect lateral gene transfer and to harbor bacterial 16S rRNA gene sequences. Here, we demonstrate the ability of broad-host-range, gen ...
... Cydia pomonella granulovirus, in particular CpGV-M isolate, is used as a biological control against the codling moth (CM), Cydia pomonella. As a result of intensive control over the years, codling moth populations have developed resistance against this isolate. This resistance is now called type I resistance. Isolates, among them, CpGV-R5, have been found that are able to overcome type I resistanc ...
... The ratoon stunting disease (RSD), caused by the bacterium Leifsonia xyli subsp. xyli (Lxx), is one of the most economically devastating diseases impacting sugarcane. RSD causes significant yield losses and variety degradation. Diagnosis of RSD is challenging because it does not exhibit any discernible internal and external symptoms. Moreover, the Lxx bacteria are very small and difficult to isola ...
... We have previously reported an enhanced version of sequencing by hybridization (SBH), termed positional SBH (PSBH). PSBH uses partially duplex probes containing single-stranded 3' overhangs, instead of simple single-stranded probes. Stacking interactions between the duplex probe and a single-stranded target allow us to reduce the probe sizes required to 5-base single-stranded overhangs. Here we de ...
Endocronartium harknessii; rust diseases; biosecurity; DNA primers; Cronartium; polymerase chain reaction; phylogeny; tree diseases; microbial detection; invasive species; disease diagnosis
Abstract:
... Peridermium harknessii is not present in the southern hemisphere yet it poses a serious threat to Pinus radiata cultivation in exotic forest plantations there. If a suspected incursion were to occur, it would be necessary to rapidly confirm the presence of P. harknessii within non-sporulating galls. With this in mind, we have developed a DNA-based identification system, using the first intergenic ...
DNA; DNA libraries; DNA primers; Escherichia coli; agarose; bacteria; catalase; gel electrophoresis; genes; marine environment; metabolism; metagenomics; polymerase chain reaction; restriction endonucleases; restriction fragment length polymorphism; seawater; surface water; Yellow Sea
Abstract:
... Catalase plays an important role in the metabolism of marine bacteria and has potential impact on the marine environment. Four PCR primers were designed to amplify the catalase gene fragments in marine bacteria by applying metagenomic DNA from Yellow Sea surface water as the template. Of the four reproducible target PCR products, the longest one with 900 bp were chosen for catalase gene library co ...
DNA primers; DNA repair; animal ovaries; breast neoplasms; cost effectiveness; genes; mutation; ovarian neoplasms; patients; polymerase chain reaction; proteins; screening; therapeutics; women
Abstract:
... Hereditary cancers account for approximately 10 % of breast and ovarian cancers. Mutations of the BRCA1 and BRCA2 genes, encoding two proteins involved in DNA repair, underlie most cases of such hereditary cancers. Women with BRCA mutations develop breast cancer in 50–80 % of cases and ovarian cancer in 10–40 % of cases. Assessing BRCA mutational status is needed to direct the clinical management ...
... A polymerase chain reaction (PCR) protocol that can be used to distinguish Pseudomonas syringae pv. tagetis from other P. syringae pathovars, including those that induce apical chlorosis in several plants of the Asteracaea family and in pea, and closely related P. savastanoi pathovars was developed based on DNA sequences from P. syringae pv. tagetis that are required for tagetitoxin synthesis. PCR ...
... Dead spot is a relatively new disease of creeping bentgrass and hybrid bermudagrass that is incited by Ophiosphaerella agrostis. Initial symptoms are difficult to diagnose and clinicians generally rely on the presence of pseudothecia within infected tissue or isolation of O. agrostis on an artificial medium. The main goal of this study was to develop a polymerase chain reactionbased technique capa ...
... Citrus huanglongbing (HLB) or yellow shoot disease (i.e., greening disease) is highly destructive to citrus production worldwide. Understanding the etiology of HLB is critical for managing the disease. HLB is currently associated with infection by 'Candidatus Liberibacter spp.' around the world, including China. However, Koch's postulates have not been fulfilled. In addition, other plant pathogens ...
... In cultivated tetraploid peanut (2n = 4x = 40, AABB), the conversion of oleic acid to linoleic acid is mainly catalyzed by the Δ¹² fatty acid desaturase (FAD). Two homoeologous genes (FAD2A and FAD2B) encoding for the desaturase are located on the A and B genomes, respectively. Abolishing or reducing the desaturase activity by gene mutation can significantly increase the oleic acid/linoleic acid r ...
... The Universal Method (UM) described here will allow the detection of any bacterial rDNA leading to the identification of that bacterium. The method should allow prompt and accurate identification of bacteria. The principle of the method is simple; when a pure PCR product of the 16S gene is obtained, sequenced, and aligned against bacterial DNA data base, then the bacterium can be identified. Confi ...
random amplified polymorphic DNA technique; sequence alignment; genome; DNA primers; Pseudoroegneria; Elymus; repetitive sequences; genetic markers
Abstract:
... The tribe Triticeae Dumortier in the grass family (Poaceae) includes the most important cereal crops (e.g., wheat, barley, and rye) and some economically important forage grasses. Elymus L. is the largest and most complex genus in the Triticeae tribe with approximately 150 species occurring worldwide. The genomic constitutions of approximately 40% of Elymus species are unknown and some have unveri ...
... BACKGROUND: In recent years, PCR has been become widely applied for the detection of trypanosomes overcoming many of the constraints of parasitological and serological techniques, being highly sensitive and specific for trypanosome detection. Individual species-specific multi-copy trypanosome DNA sequences can be targeted to identify parasites. Highly conserved ribosomal RNA (rRNA) genes are also ...
DNA primers; Hirudinea; Trypanosoma; binding proteins; birds; epimastigotes; evolution; genotype; kinetoplast DNA; mammals; mitochondria; models; polymerase chain reaction; scanning electron microscopy; Western Australia
Abstract:
... BACKGROUND: Molecular and structural information on avian Trypanosoma spp. throughout Australia is limited despite their intrinsic value in understanding trypanosomatid evolution, diversity, and structural biology. In Western Australia tissue samples (n = 429) extracted from 93 birds in 25 bird species were screened using generic PCR primers to investigate the diversity of Trypanosoma spp. To inve ...
chickens; screening; quantitative trait loci; hybrids; genetic resistance; host-pathogen relationships; protein-protein interactions; DNA primers; animal proteins; major histocompatibility complex; chromosome mapping; Mardivirus; viral proteins; Marek disease; virulence; single nucleotide polymorphism
Abstract:
... Genetic resistance to Marek's disease (MD) has been proposed as a method to augment current vaccinal control of MD. Although it is possible to identify QTL and candidate genes that are associated with MD resistance, it is necessary to integrate functional screens with linkage analysis to confirm the identity of true MD resistance genes. To help achieve this objective, a comprehensive 2-hybrid scre ...
... Five years after the completion of the sequence of the Drosophila melanogaster genome, the number of protein-coding genes it contains remains a matter of debate; the number of computational gene predictions greatly exceeds the number of validated gene annotations. We have assembled a collection of >10,000 gene predictions that do not overlap existing gene annotations and have developed a process f ...
... Diastatic strains of Saccharomyces cerevisiae are common contaminants in beer fermentations and are capable of producing an extracellular STA1-encoded glucoamylase. Recent studies have revealed variable diastatic ability in strains tested positive for STA1, and here, we elucidate genetic determinants behind this variation. We show that poorly diastatic strains have a 1162-bp deletion in the promot ...
... H9 subtype avian influenza virus (AIV) and infectious bronchitis virus (IBV) are major pathogens circulating in poultry and have resulted in great economic losses due to respiratory disease and reduced egg production. As similar symptoms are elicited by the two pathogens, it is difficult for their differential diagnosis. So far, no reverse transcription-polymerase chain reaction (RT-PCR) assay has ...
... A duplex quantitative real-time polymerase chain reaction (qPCR) assay was developed to differentiate between Bolbophorus damnificus and Bolbophorus type II species cercariae. Both trematode species are prevalent throughout the commercial catfish industry,.as both infect the ram’s horn snail, Planobella trivolvis. Identification of the cercaria to species is important in catfish disease challenge ...