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intergenic spacer region

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https://www.readbyqxmd.com/read/28187538/first-record-of-the-root-knot-nematode-i-meloidogyne-i-i-minor-i-in-new-zealand-with-description-sequencing-information-and-key-to-known-species-of-i-meloidogyne-i-in-new-zealand
#1
Zeng Qi Zhao, Wellcome Ho, Ruth Griffin, Michael Surrey, Robert Taylor, Lee T Aalders, Nigel L Bell, Yu Mei Xu, Brett J R Alexander
Meloidogyne minor Karssen et al. 2004 was collected from perennial ryegrass (Lolium perenne L.) growing in a sports ground in Christchurch, New Zealand. This is a new record for M. minor, the first report of this nematode occurring in New Zealand, and the second report from the southern hemisphere (after Chile). In general, the New Zealand isolate of M. minor corresponds well to the descriptions of M. minor given by Karssen et al. (2004). The New Zealand isolate is characterized by having a female with dorsally curved stylet, 13-14 μm long, with transversely ovoid knobs slightly sloping backwards from shaft; rounded perineal pattern; and male with stylet 16-19 μm long, large transversely ovoid knobs sloping slightly backwards from shaft; head region not set off, labial disc elevated, lateral lips prominent; and second stage juvenile 370-390 μm long, with hemizonid posterior but adjacent to excretory pore; tail 53-63 μm long; and a distinct hyaline tail terminus 14-18 μm long...
February 9, 2017: Zootaxa
https://www.readbyqxmd.com/read/28165925/molecular-detection-of-candidatus-bartonella-mayotimonensis-in-north-american-bats
#2
Thomas M Lilley, Cali A Wilson, Riley F Bernard, Emma V Willcox, Eero J Vesterinen, Quinn M R Webber, Laura Kurpiers, Jenni M Prokkola, Imran Ejotre, Allen Kurta, Kenneth A Field, DeeAnn M Reeder, Arto T Pulliainen
Candidatus Bartonella mayotimonensis was detected in 2010 from an aortic valve sample of a patient with endocarditis from Iowa, the United States of America. The environmental source of the potentially new endocarditis-causing Bartonella remained elusive. We set out to study the prevalence and diversity of bat-associated Bartonella in North America. During 2015, mist nets and harp traps were used to capture 92 bats belonging to two species: little brown myotis (Myotis lucifugus Le Conte 1831, n = 73) and the gray myotis (M...
February 6, 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28155284/molecular-surveillance-of-spotted-fever-group-rickettsioses-in-wildlife-and-detection-of-i-rickettsia-sibirica-i-in-a-topi-i-damaliscus-lunatus-i-ssp-i-jimela-i-in-kenya
#3
David Ndeereh, Andrew Thaiyah, Gerald Muchemi, Antoinette A Miyunga
Spotted fever group rickettsioses are a group of tick-borne zoonotic diseases caused by intracellular bacteria of the genus Rickettsia. The diseases are widely reported amongst international travellers returning from most sub-Saharan Africa with fever, yet their importance in local populations largely remains unknown. Although this has started to change and recently there have been increasing reports of the diseases in livestock, ticks and humans in Kenya, they have not been investigated in wildlife. We examined the presence, prevalence and species of Rickettsia present in wildlife in two regions of Kenya with a unique human-wildlife-livestock interface...
January 30, 2017: Onderstepoort Journal of Veterinary Research
https://www.readbyqxmd.com/read/28154490/ribosomal-intergenic-spacer-1-based-characterization-of-button-mushroom-agaricus-bisporus-strains
#4
Hyuk Woo Kwon, Min Ah Choi, Dae Wook Kim, Youn-Lee Oh, Min Woo Hyun, Won-Sik Kong, Seong Hwan Kim
Breeding the button mushroom requires genetic information about its strains. This study was undertaken to genetically characterize four domestically bred button mushroom strains (Saea, Saejung, Saedo, Saeyeon cultivars) and to assess the possibility of using the intergenic spacer 1 (IGS1) region of rDNA as a genetically variable region in the genetic characterization. For the experiment, 34 strains of Agaricus bisporus, two strains of A. bitorquis, and one strain of A. silvaticus, from 17 countries were used...
December 2016: Mycobiology
https://www.readbyqxmd.com/read/28130406/prevalence-of-bartonella-species-infections-in-cats-in-southern-germany
#5
M Bergmann, T Englert, B Stuetzer, J R Hawley, M R Lappin, K Hartmann
Bartonella species are zoonotic pathogens, and infections in cats are common. However, prevalence in cats in Southern Germany is still unknown. Therefore, prevalence of Bartonella species DNA in blood of 479 Southern German cats was determined using a previously published conventional PCR targeting a fragment of the 16S-23S rRNA intergenic spacer region. Associations between Bartonella bacteraemia, housing conditions, feline immunodeficiency virus (FIV) and feline leukaemia virus (FeLV) status, including progressive, regressive and abortive FeLV infection, were evaluated using Fisher's exact test...
January 27, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28126698/identification-of-arcanobacterium-hippocoleae-by-maldi-tof-ms-analysis-and-by-various-genotypical-properties
#6
J-P Wickhorst, O Sammra, A A Hassan, M Alssashen, C Lämmler, E Prenger-Berninghoff, M Erhard, M Metzner, K Paschertz, M Timke, A Abdulmawjood
In the present study an Arcanobacterium hippocoleae strain isolated from a uterus swab of an apparently healthy mare could be identified by phenotypic properties, by MALDI-TOF MS analysis and genotypically by investigating the molecular targets 16S rDNA, 16S-23S rDNA intergenic spacer region and the genes encoding the β subunit of bacterial RNA polymerase (rpoB), elongation factor tu (tuf) and glyceraldehyde 3-phosphate dehydrogenase (gap). The presented data are one of the few reports about the species A...
January 17, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28114894/evolutional-dynamics-of-45s-and-5s-ribosomal-dna-in-ancient-allohexaploid-atropa-belladonna
#7
Roman A Volkov, Irina I Panchuk, Nikolai V Borisjuk, Marta Hosiawa-Baranska, Jolanta Maluszynska, Vera Hemleben
BACKGROUND: Polyploid hybrids represent a rich natural resource to study molecular evolution of plant genes and genomes. Here, we applied a combination of karyological and molecular methods to investigate chromosomal structure, molecular organization and evolution of ribosomal DNA (rDNA) in nightshade, Atropa belladonna (fam. Solanaceae), one of the oldest known allohexaploids among flowering plants. Because of their abundance and specific molecular organization (evolutionarily conserved coding regions linked to variable intergenic spacers, IGS), 45S and 5S rDNA are widely used in plant taxonomic and evolutionary studies...
January 23, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28111712/morphological-characterization-and-hsp70-igs-based-phylogenetic-analysis-of-two-microsporidian-parasites-isolated-from-antheraea-pernyi
#8
Yong Wang, Yutao Ru, Wei Liu, Deyi Wang, Jinglin Zhou, Yiren Jiang, Shenglin Shi, Li Qin
Two microsporidian isolates were extracted from single infected egg-laying tussah silk moth (Antheraea pernyi) in Liaoning Province, China. The microsporidia were subsequently grown in silk moth larvae, isolated, and subjected to morphological characterization (by light and transmission electron microscopy) and phylogenetic analysis (based on conserved genes). One type of spore was long-axis-oval in shape, measuring 4.71 × 1.95 μm, and the other type was short-axis-oval, measuring 3.64 × 2.17 μm. These dimensions were markedly different from those reported in the spores of the common microsporidia infecting A...
January 22, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28105939/evolution-of-mitochondrial-genomes-in-baikalian-amphipods
#9
Elena V Romanova, Vladimir V Aleoshin, Ravil M Kamaltynov, Kirill V Mikhailov, Maria D Logacheva, Elena A Sirotinina, Alexander Yu Gornov, Anton S Anikin, Dmitry Yu Sherbakov
BACKGROUND: Amphipods (Crustacea) of Lake Baikal are a very numerous and diverse group of invertebrates generally believed to have originated by adaptive radiation. The evolutionary history and phylogenetic relationships in Baikalian amphipods still remain poorly understood. Sequencing of mitochondrial genomes is a relatively feasible way for obtaining a set of gene sequences suitable for robust phylogenetic inferences. The architecture of mitochondrial genomes also may provide additional information on the mechanisms of evolution of amphipods in Lake Baikal...
December 28, 2016: BMC Genomics
https://www.readbyqxmd.com/read/28099075/occurrence-and-relevance-of-mycoplasma-sturni-in-free-ranging-corvids-in-germany
#10
Luisa Ziegler, Franca Möller Möller Palau-Ribes, Liane Schmidt, Michael Lierz
Several Mycoplasma spp. are well-known pathogens in poultry. In birds of prey, White Storks ( Ciconia ciconia ), and some waterfowl (Anatidae, Pelecanidae) species, mycoplasmas occur commonly and seem to be apathogenic or commensal and most likely belong to the physiologic microbial flora of the respiratory tract. In other bird species, such as Common Nightingales ( Luscinia megarhynchos ) and tits (Paridae), Mycoplasma spp. are absent in healthy birds. In corvids, the prevalence and role of Mycoplasma spp...
18, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28040562/enzootic-origins-for-clinical-manifestations-of-lyme-borreliosis
#11
Setareh Jahfari, Aleksandra Krawczyk, E Claudia Coipan, Manoj Fonville, Joppe W Hovius, Hein Sprong, Katsuhisa Takumi
Both early localized and late disseminated forms of Lyme borreliosis are caused by Borrelia burgdorferi senso lato. Differentiating between the spirochetes that only cause localized skin infection from those that cause disseminated infection, and tracing the group of medically-important spirochetes to a specific vertebrate host species, are two critical issues in disease risk assessment and management. Borrelia burgdorferi senso lato isolates from Lyme borreliosis cases with distinct clinical manifestations (erythema migrans, neuroborreliosis, acrodermatitis chronica atrophicans, and Lyme arthritis) and isolates from Ixodes ricinus ticks feeding on rodents, birds and hedgehogs were typed to the genospecies level by sequencing part of the intergenic spacer region...
December 28, 2016: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/27984192/the-mitochondrial-genome-of-the-lepidopteran-host-cadaver-thitarodes-sp-of-ophiocordyceps-sinensis-and-related-phylogenetic-analysis
#12
Xincong Kang, Yongquan Hu, Jiang Hu, Liqin Hu, Feng Wang, Dongbo Liu
To understand the phylogeny of the host insect (Thitarodes sp.) of the fungus Ophiocordyceps sinensis, we sequenced, annotated and characterized the complete mitochondrial (mt) genome of the host cadaver of a natural O. sinensis. Further, we compared the Thitarodes sp. mt genome with those of the other 7 sequenced Hepialidae and examined the phylogenetic relationships using a constructed Maximum Likelihood (ML) phylogenetic tree and mt genomic features (genetic distances and intergenic spacers). The mt genome is a circular molecule of 16,280bp in length with a high A+T content (81...
October 27, 2016: Gene
https://www.readbyqxmd.com/read/27975120/nested-pcr-targeting-intergenic-spacer-igs-in-genotyping-of-giardia-duodenalis-isolated-from-symptomatic-and-asymptomatic-infected-egyptian-school-children
#13
Eman M Hussein, Ola A Ismail, Amira B Mokhtar, Samer E Mohamed, Rania M Saad
Distinct sequences of Giardia duodenalis assemblages raised the hypothesis that certain assemblages may contribute to its clinical outcome. However, sequences analysis is time consuming, expensive, and needs many manual operations. Nested PCR targeting intergenic spacer (IGS) region was applied successfully to genotype G. duodenalis. This study aimed to identify the prevalence of G. duodenalis assemblages among giardiasis school children and its relation to the presence of symptoms using nested IGS/PCR. Of 65 microscopically confirmed Giardia-positive samples, 65 samples were genotyped proving high sensitivity (92...
February 2017: Parasitology Research
https://www.readbyqxmd.com/read/27933047/diazotroph-diversity-in-the-sea-ice-melt-ponds-and-surface-waters-of-the-eurasian-basin-of-the-central-arctic-ocean
#14
Mar Fernández-Méndez, Kendra A Turk-Kubo, Pier L Buttigieg, Josephine Z Rapp, Thomas Krumpen, Jonathan P Zehr, Antje Boetius
The Eurasian basin of the Central Arctic Ocean is nitrogen limited, but little is known about the presence and role of nitrogen-fixing bacteria. Recent studies have indicated the occurrence of diazotrophs in Arctic coastal waters potentially of riverine origin. Here, we investigated the presence of diazotrophs in ice and surface waters of the Central Arctic Ocean in the summer of 2012. We identified diverse communities of putative diazotrophs through targeted analysis of the nifH gene, which encodes the iron protein of the nitrogenase enzyme...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27924535/targeting-conserved-genes-in-fusarium-species
#15
Jéssica Gil-Serna, Belén Patiño, Miguel Jurado, Salvador Mirete, Covadonga Vázquez, M Teresa González-Jaén
Fumonisins are important mycotoxins contaminating foods and feeds which are mainly produced by F. verticillioides and F. proliferatum. Additionally, both are pathogens of maize and other cereals. We describe two highly sensitive, rapid, and species-specific PCR protocols which enable detection and discrimination of these closely related species in cereal flour or grain samples. The specific primer pairs of these assays were based on the intergenic spacer region of the multicopy rDNA unit which highly improves the sensitivity of the PCR assay in comparison with single-copy target regions...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27917544/postvaccination-wounds-associated-predominantly-with-arcanobacterium-phocae-in-minks-neovison-vison-at-three-mink-farms
#16
Robert J Molenaar, Rianne Buter, Agnieszka Sroka
BACKGROUND: The emerging skin disease fur animal epidemic necrotic pyoderma (FENP) has been attributed to infection with Arcanobacterium phocae (ABP). The exact pathogenesis and risk factors of FENP have yet to be elucidated. ANIMALS: Three mink from each of three different mink farms (A-C) with postvaccination skin wounds at the vaccination site and six mink from an unaffected mink farm (D) that had used the same vaccine batch and vaccination site (hind leg). METHODS AND RESULTS: All minks from farms A-C had severe necrotizing to necropurulent dermatitis where they were vaccinated intramuscularly in the hind leg...
December 4, 2016: Veterinary Dermatology
https://www.readbyqxmd.com/read/27917315/the-first-complete-plastid-genomes-of-melastomataceae-are-highly-structurally-conserved
#17
Marcelo Reginato, Kurt M Neubig, Lucas C Majure, Fabian A Michelangeli
BACKGROUND: In the past three decades, several studies have predominantly relied on a small sample of the plastome to infer deep phylogenetic relationships in the species-rich Melastomataceae. Here, we report the first full plastid sequences of this family, compare general features of the sampled plastomes to other sequenced Myrtales, and survey the plastomes for highly informative regions for phylogenetics. METHODS: Genome skimming was performed for 16 species spread across the Melastomataceae...
2016: PeerJ
https://www.readbyqxmd.com/read/27834904/chemical-and-genetic-diversity-of-nodularia-spumigena-from-the-baltic-sea
#18
Hanna Mazur-Marzec, Mireia Bertos-Fortis, Anna Toruńska-Sitarz, Anna Fidor, Catherine Legrand
Nodularia spumigena is a toxic, filamentous cyanobacterium occurring in brackish waters worldwide, yet forms extensive recurrent blooms in the Baltic Sea. N. spumigena produces several classes of non-ribosomal peptides (NRPs) that are active against several key metabolic enzymes. Previously, strains from geographically distant regions showed distinct NRP metabolic profiles. In this work, conspecific diversity in N. spumigena was studied using chemical and genetic approaches. NRP profiles were determined in 25 N...
November 10, 2016: Marine Drugs
https://www.readbyqxmd.com/read/27818123/identification-and-molecular-survey-of-borrelia-burgdorferi-sensu-lato-in-sika-deer-cervus-nippon-from-jilin-province-north-eastern-china
#19
Bintao Zhai, Qingli Niu, Jifei Yang, Zhijie Liu, Junlong Liu, Hong Yin, Qiaoying Zeng
Lyme disease caused by Borrelia burgdorferi sensu lato (s.l.) is a common disease of domestic animals and wildlife worldwide. Sika deer is first-grade state-protected wildlife animals in China and have economic consequences for humans. It is reported that sika deer may serve as an important reservoir host for several species of B. burgdorferi s.l. and may transmit these species to humans and animals. However, little is known about the presence of Borrelia pathogens in sika deer in China. In this study, the existence and prevalence of Borrelia sp...
February 2017: Acta Tropica
https://www.readbyqxmd.com/read/27813572/chloroplast-dna-analysis-of-tunisian-cork-oak-populations-quercus-suber-l-sequence-variations-and-molecular-evolution-of-the-trnl-uaa-trnf-gaa-region
#20
A Abdessamad, G Baraket, H Sakka, Y Ammari, M Ksontini, A Salhi Hannachi
Sequences of the trnL-trnF spacer and combined trnL-trnF region in chloroplast DNA of cork oak (Quercus suber L.) were analyzed to detect polymorphisms and to elucidate molecular evolution and demographic history. The aligned sequences varied in length and nucleotide composition. The overall ratio of transition/transversion (ti/tv) of 0.724 for the intergenic spacer and 0.258 for the pooled sequences were estimated, and indicated that transversions are more frequent than transitions. The molecular evolution and demographic history of Q...
October 24, 2016: Genetics and Molecular Research: GMR
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