Database : MEDLINE
Search on : secernentea and infections [Words]
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[PMID]: 29256428
[Au] Autor:Morell M; Lehnert K; IJsseldijk LL; Raverty SA; Wohlsein P; Gröne A; André M; Siebert U; Shadwick RE
[Ad] Address:Zoology Department, University of British Columbia, Vancouver, British Columbia V6T1Z4, Canada.
[Ti] Title:Parasites in the inner ear of harbour porpoise: cases from the North and Baltic Seas.
[So] Source:Dis Aquat Organ;127(1):57-63, 2017 Dec 19.
[Is] ISSN:0177-5103
[Cp] Country of publication:Germany
[La] Language:eng
[Ab] Abstract:Peribullar sinuses of harbour porpoises Phocoena phocoena are parasitized with high prevalence by the nematode Stenurus minor. The effect of S. minor on the hearing ability of this species is still undetermined. Here, we review the occurrence of S. minor in the inner ear of harbour porpoises recovered from strandings in the North and Baltic Seas. In particular, we present the results from ears collected in German and Danish waters from 2002 to 2016 and from Dutch waters from 2010 to 2016. While the prevalence of S. minor in pterygoid and peribullar sinuses and tympanic cavity was high in harbour porpoises (66.67% in our cases), its prevalence in the cochlea was rare. Only 1 case out of 129 analysed by either histology, electron microscopy or immunofluorescence showed the presence of a nematode parasite morphologically consistent with S. minor at the most basal portion of the right cochlea. This individual also had severe haemorrhage along the right cochlear spiral, which was likely caused by ectopic S. minor migration. Although this animal might have had impaired hearing in the right ear, it was otherwise in good body condition with evidence of recent feeding. These findings highlight the need to study the effect of parasites on hearing, and other pathological changes that might impair appropriate processing of acoustic information.
[Mh] MeSH terms primary: Labyrinth Diseases/veterinary
Nematode Infections/veterinary
Phocoena/parasitology
[Mh] MeSH terms secundary: Animals
Ear, Inner/parasitology
Ear, Inner/ultrastructure
Labyrinth Diseases/epidemiology
Labyrinth Diseases/parasitology
Nematoda/classification
Nematoda/isolation & purification
Nematode Infections/epidemiology
Nematode Infections/parasitology
North Sea/epidemiology
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180305
[Lr] Last revision date:180305
[Js] Journal subset:IM
[Da] Date of entry for processing:171220
[St] Status:MEDLINE
[do] DOI:10.3354/dao03178

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[PMID]: 29278825
[Au] Autor:Di Azevedo MIN; Iñiguez AM
[Ad] Address:LABTRIP, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro 21045-900, Brazil.
[Ti] Title:Nematode parasites of commercially important fish from the southeast coast of Brazil: Morphological and genetic insight.
[So] Source:Int J Food Microbiol;267:29-41, 2018 02 21.
[Is] ISSN:1879-3460
[Cp] Country of publication:Netherlands
[La] Language:eng
[Ab] Abstract:Studies of nematofauna of teleost fish from the Brazilian coast are relatively scarce and limited to identification based on morphology. The objective of the present study was to determine the diversity and prevalence of nematode parasites in teleost fish from the southeast Atlantic coast of Rio de Janeiro, through morphological, molecular, and ecological approaches. Parasites were collected from sixty specimens each of Genypterus brasiliensis, Micropogonias furnieri, and Mullus argentinae obtained in winters and summers of 2012­2014. Morphological and genetic characterization was conducted using light microscopy and the molecular targets 18S rDNA, ITS1, and mtDNA cox2. Nematodes identified in M. furnieri were Cucculanus genypteri (n = 1575, P = 98.3%) and Hysterothylacium deardorffoverstreetorum (s.l.) (n = 2, P = 3.3%); in G. brasiliensis were Dichelyne (Cucullanellus) sciaenidicola (n = 99, P = 33.3%), Cucculanus pulcherrimus (n = 45, P = 18.3%), Hysterothylacium deardorffoverstreetorum (s.l.) (n = 3, P = 5%), and Anisakis typica (n = 1, P = 1.7%); and, in M. argentinae, were H. deardorffoverstreetorum (s.l.) (n = 146, P = 48.3%), and Procamallanus (Spirocamallanus) halitrophus (n = 4, P = 6.7%). DNA sequence data of C. genypteri, C. pulcherrimus, D. (C.) sciaenidicola, and P. (S.) halitrophus were reported for the first time. New host records are M. argentinae for P. (S.) halitrophus, M. furnieri for A. typica, while H. deardorffoverstreetorum (s.l.) was found in all three fish species. Intestine showed significantly higher intensity than other sites, and no significant seasonal variation in parasitological indices was observed. Hysterothylacium specimens (n = 6) were found in fish muscle, potentially a public health concern.
[Mh] MeSH terms primary: Fish Diseases/parasitology
Nematoda/genetics
Nematode Infections/parasitology
Perciformes/parasitology
[Mh] MeSH terms secundary: Animals
Brazil
DNA, Mitochondrial/genetics
DNA, Ribosomal/genetics
Nematoda/classification
Nematoda/isolation & purification
[Pt] Publication type:JOURNAL ARTICLE
[Nm] Name of substance:0 (DNA, Mitochondrial); 0 (DNA, Ribosomal)
[Em] Entry month:1803
[Cu] Class update date: 180301
[Lr] Last revision date:180301
[Js] Journal subset:IM
[Da] Date of entry for processing:171227
[St] Status:MEDLINE

  3 / 2644 MEDLINE  
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[PMID]: 29364951
[Au] Autor:Puehringer-Sturmayr V; Wascher CAF; Loretto MC; Palme R; Stoewe M; Kotrschal K; Frigerio D
[Ad] Address:Core Facility Konrad Lorenz Forschungsstelle for Behaviour and Cognition, University of Vienna, Grünau im Almtal, Austria.
[Ti] Title:Seasonal differences of corticosterone metabolite concentrations and parasite burden in northern bald ibis (Geronticus eremita): The role of affiliative interactions.
[So] Source:PLoS One;13(1):e0191441, 2018.
[Is] ISSN:1932-6203
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:The reproductive season is energetically costly as revealed by elevated glucocorticoid concentrations, constrained immune functions and an increased risk of infections. Social allies and affiliative interactions may buffer physiological stress responses and thereby alleviate associated effects. In the present study, we investigated the seasonal differences of immune reactive corticosterone metabolite concentrations, endoparasite burden (nematode eggs and coccidian oocysts) and affiliative interactions in northern bald ibis (Geronticus eremita), a critically endangered bird. In total, 43 individually marked focal animals from a free-ranging colony were investigated. The analyses included a description of initiated and received affiliative interactions, pair bond status as well as seasonal patterns of hormone and endoparasite levels. During the reproductive season, droppings contained parasite eggs more often and corticosterone metabolite levels were higher as compared to the period after reproduction. The excretion rate of endoparasite products was lower in paired individuals than in unpaired ones, but paired animals exhibited higher corticosterone metabolite concentrations than unpaired individuals. Furthermore, paired individuals initiated affiliative behaviour more frequently than unpaired ones. This suggests that the reproductive season influences the excretion patterns of endoparasite products and corticosterone metabolites and that affiliative interactions between pair partners may positively affect endoparasite burden during periods of elevated glucocorticoid levels. Being embedded in a pair bond may have a positive impact on individual immune system and parasite resistance.
[Mh] MeSH terms primary: Birds/physiology
Birds/parasitology
Corticosterone/metabolism
[Mh] MeSH terms secundary: Animals
Behavior, Animal/physiology
Birds/immunology
Coccidia/isolation & purification
Coccidia/pathogenicity
Female
Male
Nematoda/isolation & purification
Nematoda/pathogenicity
Oocysts/isolation & purification
Oocysts/pathogenicity
Pair Bond
Parasite Egg Count
Reproduction/physiology
Seasons
[Pt] Publication type:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Name of substance:W980KJ009P (Corticosterone)
[Em] Entry month:1802
[Cu] Class update date: 180226
[Lr] Last revision date:180226
[Js] Journal subset:IM
[Da] Date of entry for processing:180125
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0191441

  4 / 2644 MEDLINE  
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[PMID]: 29262347
[Au] Autor:Harris NL; Loke P
[Ad] Address:Global Health Institute, École Polytechnique Fédérale de Lausanne, Lausanne 1015, Switzerland. Electronic address: nicola.harris@epfl.ch.
[Ti] Title:Recent Advances in Type-2-Cell-Mediated Immunity: Insights from Helminth Infection.
[So] Source:Immunity;47(6):1024-1036, 2017 Dec 19.
[Is] ISSN:1097-4180
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:Type-2-cell-mediated immune responses play a critical role in mediating both host-resistance and disease-tolerance mechanisms during helminth infections. Recently, type 2 cell responses have emerged as major regulators of tissue repair and metabolic homeostasis even under steady-state conditions. In this review, we consider how studies of helminth infection have contributed toward our expanding cellular and molecular understanding of type-2-cell-mediated immunity, as well as new areas such as the microbiome. By studying how these successful parasites form chronic infections without overt pathology, we are gaining additional insights into allergic and inflammatory diseases, as well as normal physiology.
[Mh] MeSH terms primary: Helminthiasis/immunology
Immunity, Cellular
Macrophages/immunology
Nematoda/immunology
Th2 Cells/immunology
Trematoda/immunology
[Mh] MeSH terms secundary: Animals
Cytokines/genetics
Cytokines/immunology
Epithelial Cells/immunology
Epithelial Cells/parasitology
Gene Expression Regulation/immunology
Helminthiasis/genetics
Helminthiasis/parasitology
Homeostasis/immunology
Host-Parasite Interactions/immunology
Humans
Macrophages/parasitology
Mast Cells/immunology
Mast Cells/parasitology
Microbiota/immunology
Th2 Cells/parasitology
[Pt] Publication type:JOURNAL ARTICLE; REVIEW
[Nm] Name of substance:0 (Cytokines)
[Em] Entry month:1712
[Cu] Class update date: 180221
[Lr] Last revision date:180221
[Js] Journal subset:IM
[Da] Date of entry for processing:171221
[St] Status:MEDLINE

  5 / 2644 MEDLINE  
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[PMID]: 29211424
[Au] Autor:Bakay YI
[Ti] Title:[ECOLOGICAL AND PARASITOLOGICAL CHARACTERISTICS OF THE SMALL REDFISH SEBASTES VIVIPARUS (PISCES: SCORPAENIDAE)].
[So] Source:Parazitologiia;50(5):345-56, 2016 Sep-Oct.
[Is] ISSN:0031-1847
[Cp] Country of publication:Russia (Federation)
[La] Language:rus
[Ab] Abstract:The results of the parasite fauna research represent peculiarities of formation and ecological, faunistic and zoogeographical characteristics of parasite fauna of the small redfish Sebastes viviparus Krayer. 1845. This species is distinguished among the other North Atlantic Sebastes by the richest fauna of myxosporidians, trematodes, nematodes and acanthocephalans. The parasite fauna of S. viviparus is formed mainly of boreal species and to a lesser extent of Arctic-boreal species. According to the vertical zonality of parasites in fishes of the North Atlantic they are mainly represented by mesobenthic and epicontinental species. The parasite fauna in small redfish possesses significantly more pronounced geographic specificity than that of other North Atlantic Sebastes species.
[Mh] MeSH terms primary: Acanthocephala/physiology
Fish Diseases/parasitology
Helminthiasis/parasitology
Nematoda/physiology
Perciformes/parasitology
Trematoda/physiology
[Mh] MeSH terms secundary: Acanthocephala/classification
Animals
Atlantic Ocean
Nematoda/classification
Trematoda/classification
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1712
[Cu] Class update date: 171221
[Lr] Last revision date:171221
[Js] Journal subset:IM
[Da] Date of entry for processing:171207
[St] Status:MEDLINE

  6 / 2644 MEDLINE  
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[PMID]: 29211422
[Au] Autor:Shulman BS; Shurov IL; Shirokov VA
[Ti] Title:[SOME FEATURES OF THE BIOLOGY AND PARASITE FAUNA OF THE ARCTIC CHAR (SALVELINUS ALPINUS L.) IN THE LAKE MUSHTALAMPI (NORTHERN KARELIA)].
[So] Source:Parazitologiia;50(4):325-30, 2016 Jul-Aug.
[Is] ISSN:0031-1847
[Cp] Country of publication:Russia (Federation)
[La] Language:rus
[Ab] Abstract:The native population of the Arctic char in the Lake Mushtalampi was studied. The dwarf form of the Arctic char inhabiting the lake was revealed. The fish is characterized by extremely low growth rate and by early maturation. Twelve parasite species were found in the arctic char. The parasite fauna is typical of representatives of Salmonidae. Distinguishing features of this fauna include the absence of narrowly specialized char parasite species. High intensity of infection with nematodes Philonema oncorhynchi allows estimating the epizootic state of the studied char population as insufficient.
[Mh] MeSH terms primary: Fish Diseases/parasitology
Lakes/parasitology
Nematoda/physiology
Nematode Infections/parasitology
Trout/parasitology
[Mh] MeSH terms secundary: Animals
Nematoda/classification
Russia
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1712
[Cu] Class update date: 171221
[Lr] Last revision date:171221
[Js] Journal subset:IM
[Da] Date of entry for processing:171207
[St] Status:MEDLINE

  7 / 2644 MEDLINE  
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[PMID]: 28934299
[Au] Autor:Huggins LG; Michaels CJ; Cruickshank SM; Preziosi RF; Else KJ
[Ad] Address:Faculty of Biology, Medicine and Health, University of Manchester, MAHSC, Manchester, United Kingdom.
[Ti] Title:A novel copro-diagnostic molecular method for qualitative detection and identification of parasitic nematodes in amphibians and reptiles.
[So] Source:PLoS One;12(9):e0185151, 2017.
[Is] ISSN:1932-6203
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:Anthropogenic disturbance via resource acquisition, habitat fragmentation and climate change, amongst other factors, has led to catastrophic global biodiversity losses and species extinctions at an accelerating rate. Amphibians are currently one of the worst affected classes with at least a third of species categorised as being threatened with extinction. At the same time, they are also critically important for many habitats and provide man with a powerful proxy for ecosystem health by acting as a bioindicator group. Whilst the causes of synchronised amphibian losses are varied recent research has begun to highlight a growing role that macroparasites are playing in amphibian declines. However, diagnosing parasite infection in the field can be problematic, principally relying on collection and euthanasia of hosts, followed by necropsy and morphological identification of parasites in situ. The current study developed a non-invasive PCR-based methodology for sensitive detection and identification of parasitic nematode DNA released in the faeces of infected amphibians as egg or tissue fragments (environmental DNA). A DNA extraction protocol optimised for liberation of DNA from resilient parasite eggs was developed alongside the design of a novel, nematode universal, degenerate primer pair, thus avoiding the difficulties of using species specific primers in situations where common parasite species are unknown. Used in conjunction this protocol and primer pair was tested on a wide range of faecal samples from captive and wild amphibians. The primers and protocol were validated and detected infections, including a Railletnema nematode infection in poison dart frogs from ZSL London Zoo and Mantella cowani frogs in the wild. Furthermore, we demonstrate the efficacy of our PCR-based protocol for detecting nematode infection in other hosts, such as the presence of pinworm (Aspiculuris) in two tortoise species and whipworm (Trichuris muris) in mice. Our environmental DNA approach mitigates problems associated with microscopic identification and can be applied to detect nematode parasitoses in wild and captive hosts for infection surveillance and maintenance of healthy populations.
[Mh] MeSH terms primary: Amphibians/parasitology
Molecular Diagnostic Techniques/methods
Nematoda/genetics
Nematoda/physiology
Nematode Infections/diagnosis
Reptiles/parasitology
[Mh] MeSH terms secundary: Animals
DNA/analysis
DNA/genetics
DNA Primers/genetics
Feces/parasitology
Mice
[Pt] Publication type:JOURNAL ARTICLE
[Nm] Name of substance:0 (DNA Primers); 9007-49-2 (DNA)
[Em] Entry month:1710
[Cu] Class update date: 171024
[Lr] Last revision date:171024
[Js] Journal subset:IM
[Da] Date of entry for processing:170922
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0185151

  8 / 2644 MEDLINE  
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[PMID]: 28800757
[Au] Autor:Ngouateu Teufack SE; NMbogning Tayo G; Ngangout Alidou M; Yondo J; Djiomene AF; Wabo Poné J; Mbida FM
[Ad] Address:Research Unit of Biology and Applied Ecology, Department of Animal Biology, Faculty of Science, University of Dschang, P.O. Box 067, Dschang, Cameroon.
[Ti] Title:Anthelminthic properties of Methylene chloride-methanol (1:1) extracts of two Cameroonians medicinal plants on Heligmosomoides bakeri (Nematoda: Heligmosomatidea).
[So] Source:BMC Complement Altern Med;17(1):400, 2017 Aug 11.
[Is] ISSN:1472-6882
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:BACKGROUND: The resistance of some medico-veterinary parasite strains as well as the unavailability and toxicity of synthetic anthelminthics on humans, animals and the impacts of their residues in the environment have pushed scientists to turn to plants with anthelminthic properties. Hence, the aim of this work was to contribute to the fight against helminths of medical and veterinary importance in general, and also to clear the environment of their free living stages. METHODS: Fresh eggs of Heligmosomoides bakeri were obtained from the faeces of experimentally infected mice. L and L larval stages were obtained after 48 and 72 h of coproculture respectively. Methylene Chloride-Methanol (1:1) extracts of Annona senegalensis and Nauclea latifolia were diluted in DMSO or Tween 80 to prepare the following concentrations: 625, 1250, 2500, 3750 and 5000 µg/ml. The effects of extract solutions were evaluated on the embryonation of eggs, egg hatching and on L and L survival after 48, 10 and 24 h of incubation. Negative controls were 1.5% DMSO, 4% Tween 80 and a mixture of these solvents. The TLC was carried out and the profiles of secondary metabolites were made. RESULTS: Negative controls had no effect on the embryonation, eggs hatching and on larval mortality. However, it was found that, the extracts affected the free living stages of H. bakeri in a concentration-dependant manner. At the highest concentration (5000 µg/ml), the rate of inhibition of embryonation obtained were 20.80%, 38.15% and 84.83% for Methylene Chloride-Methanol of Annona senegalensis (MCM As), Nauclea latifolia (MCM Nl) extracts and mixture of Annona senegalensis and Nauclea latifolia (MCM As-Nl) extract respectively. For egg hatch, the inhibition rate was 16.10%, 46.24% and 87.07% for the above three extracts respectively at the same concentration of 5000 µg/ml. On L and L larval stages after 24 h of exposure to extracts, the mortality rates of 100%, 54.76% and 96.77% against 98%, 51.44% and 100% were obtained for MCM As, MCM Nl and MCM As-Nl respectively at the highest concentration. The Methylene Chloride-Methanol of A.senegalensis, N. latifolia extracts showed the presence of alkaloids except in N. latifolia extract, flavonoids, sterols, triterpens, tanins, polyphenols, anthraquinons, saponins and terpenoids. CONCLUSION: These findings suggest that, the mixture of the two plant extracts showed an additive (synergetic effect) ovicidal effect and a slight larval mortality on L as compared to the effect of MCM As extract alone. These effects were due to the presence ao secondary metabolites identifies in the plant extracts. Thus, they may be used as possible «disinfectants¼ for soil transmitted nematodes.
[Mh] MeSH terms primary: Annona/chemistry
Anthelmintics/pharmacology
Larva/drug effects
Nematoda/drug effects
Nematode Infections/parasitology
Plant Extracts/pharmacology
Rubiaceae/chemistry
[Mh] MeSH terms secundary: Animals
Cameroon
Drug Synergism
Life Cycle Stages/drug effects
Medicine, African Traditional
Mice
Nematoda/growth & development
Phytochemicals/analysis
Phytochemicals/pharmacology
[Pt] Publication type:JOURNAL ARTICLE
[Nm] Name of substance:0 (Anthelmintics); 0 (Phytochemicals); 0 (Plant Extracts)
[Em] Entry month:1709
[Cu] Class update date: 170901
[Lr] Last revision date:170901
[Js] Journal subset:IM
[Da] Date of entry for processing:170813
[St] Status:MEDLINE
[do] DOI:10.1186/s12906-017-1908-8

  9 / 2644 MEDLINE  
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[PMID]: 28719642
[Au] Autor:Tadege B; Shimelis T
[Ad] Address:Hawassa University, College of Medicine and Health Sciences, School of Medicine, Microbiology and Parasitology Unit, Hawassa, Ethiopia.
[Ti] Title:Infections with Schistosoma mansoni and geohelminths among school children dwelling along the shore of the Lake Hawassa, southern Ethiopia.
[So] Source:PLoS One;12(7):e0181547, 2017.
[Is] ISSN:1932-6203
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:BACKGROUND: Infections with Schistosoma mansoni and soil-transmitted helminthes (STHs) are major public health problems in Ethiopia. However, information was scarce on the current status of these infections to guide an intervention in the study area. Therefore, this study was conducted to assess the prevalence of infections with S. mansoni and STHs and associated factors among school children in southern Ethiopia. METHODS: This cross-sectional study investigated children who were attending the Finchawa and Tullo junior elementary schools and were residing along the shore of the lake Hawassa in January and February, 2015. A total of 374 students were selected using systematic random sampling technique. Data on socio-demography and related factors was collected using structured questionnaires. A single stool sample was collected from each child and processed using formol-ether concentration technique and examined microscopically for parasites' ova/larva. RESULTS: The prevalence of parasitic infection with one or more than one helminthiasis was found to be 67.9%. Seven different types of helminths were identified and the most prevalent parasites were Ascaris lumbricoides (44.4%), followed by S. mansoni (31%), Trichuris trichiura (11%), and hookworms (7.7%). The rate of infection with STHs was 52.4%. Single, double, triple and quadruple infections were 42.2, 22.5, 2.4, and 0.8%, respectively. Children who practiced open-field defecation (AOR, 3.6; 95% CI 1.6-8.0; p = 0.001) and had not always washed their hands before eating a meal (AOR, 5.0; 95%CI 2.15-11.7; p <0.001) were more infected with STHs. Moreover, the rate of S. mansoni infection was significantly higher among children who were attending the Finchawa school (AOR, 2.13; 95% CI 1.31-3.46; p = 0.002), aged 11-15 years (AOR, 1.97; 95% CI 1.22-3.19; p = 0.006), had swum in the lake Hawassa (AOR, 2.73; 95%CI 1.20-6.17; p = 0.016), and had involved in irrigation-related activities (AOR, 1.68; 95%CI 1.04-2.71; p = 0.034). CONCLUSION: The study showed high prevalence of STHs and moderate rate of schisotosomiasis. Mass deworming twice a year for STHs and once every two years for S. mansoni, further to strengthening other prevention measures, is critically needed to reduce these infections to inconsequential level.
[Mh] MeSH terms primary: Lakes
Nematoda/physiology
Nematode Infections/epidemiology
Schistosoma mansoni/physiology
Schistosomiasis mansoni/epidemiology
[Mh] MeSH terms secundary: Adolescent
Animals
Child
Child, Preschool
Cross-Sectional Studies
Ethiopia/epidemiology
Female
Humans
Male
Risk Factors
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1709
[Cu] Class update date: 170925
[Lr] Last revision date:170925
[Js] Journal subset:IM
[Da] Date of entry for processing:170719
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0181547

  10 / 2644 MEDLINE  
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[PMID]: 28704498
[Au] Autor:Xiang N; Lawrence KS; Kloepper JW; Donald PA; McInroy JA
[Ad] Address:Department of Entomology and Plant Pathology, Auburn University, Auburn, Alabama, United States of America.
[Ti] Title:Biological control of Heterodera glycines by spore-forming plant growth-promoting rhizobacteria (PGPR) on soybean.
[So] Source:PLoS One;12(7):e0181201, 2017.
[Is] ISSN:1932-6203
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:Heterodera glycines, the soybean cyst nematode, is the most economically important plant-parasitic nematode on soybean production in the U.S. The objectives of this study were to evaluate the potential of plant growth-promoting rhizobacteria (PGPR) strains for mortality of H. glycines J2 in vitro and for reducing nematode population density on soybean in greenhouse, microplot, and field trials. The major group causing mortality to H. glycines in vitro was the genus Bacillus that consisted of 92.6% of the total 663 PGPR strains evaluated. The subsequent greenhouse, microplot, and field trials indicated that B. velezensis strain Bve2 consistently reduced H. glycines cyst population density at 60 DAP. Bacillus mojavensis strain Bmo3 suppressed H. glycines cyst and total H. glycines population density under greenhouse conditions. Bacillus safensis strain Bsa27 and Mixture 1 (Bve2 + Bal13) reduced H. glycines cyst population density at 60 DAP in the field trials. Bacillus subtilis subsp. subtilis strains Bsssu2 and Bsssu3, and B. velezensis strain Bve12 increased early soybean growth including plant height and plant biomass in the greenhouse trials. Bacillus altitudinis strain Bal13 increased early plant growth on soybean in the greenhouse and microplot trials. Mixture 2 (Abamectin + Bve2 + Bal13) increased early plant growth in the microplot trials at 60 DAP, and also enhanced soybean yield at harvest in the field trials. These results demonstrated that individual PGPR strains and mixtures can reduce H. glycines population density in the greenhouse, microplot, and field conditions, and increased yield of soybean.
[Mh] MeSH terms primary: Bacillus/physiology
Pest Control, Biological/methods
Plant Diseases/prevention & control
Plant Roots/microbiology
Soybeans/microbiology
Spores, Bacterial/physiology
Tylenchoidea/pathogenicity
[Mh] MeSH terms secundary: Animals
Antibiosis/physiology
Plant Diseases/parasitology
Plant Roots/parasitology
Secernentea Infections/prevention & control
Soybeans/growth & development
Soybeans/parasitology
Tylenchoidea/microbiology
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1709
[Cu] Class update date: 170929
[Lr] Last revision date:170929
[Js] Journal subset:IM
[Da] Date of entry for processing:170714
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0181201


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