Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 15 of 15 for “"pathotype"”.
-
Limits of detection of Magnaporthe oryzae Triticum pathotype in wheat seed: implications for pathogen dissemination
… fungal pathogen Magnaporthe oryzae Triticum pathotype (MoT). The first objective of this research was to establish the detection threshold for MoT in infected wheat seeds as a function of sensitivity and specificity of a modified quantitative and conventional PCR assay. Accurate amount mix …
-
Phytophthora Sojae Infecting Soybean: Pathotype Diversity, New Sources of Resistance and Interaction with the Soybean Cyst Nematode
… of P. sojae in South Dakota, specifically pathotype diversity, identification of new resistance sources and the interaction with the soybean cyst nematode (<em>Heterodera glycines</em> Ichinohe, SCN), this research was undertaken with the following objectives - 1) to characterize the …
-
Bipolaris zeicola: physiological races, morphology and resistance on maize
… of reaction to one isolate of the proposed pathotype of B. zeicola was studied. Resistance was controlled by a single dominant gene in the cross Pr x B37. Forty-nine isolates of B. zeicola from different geographical areas including all the previously described races and pathotype were …
-
The invasin IbeA and its role in Adherent-Invasive Escherichia coli (AIEC) pathogenesis
… confers to AIEC seem to be specific for this pathotype, since complementation of a non-AIEC strain with a plasmid carrying IbeA did not render the recipient strain invasive. Besides intestinal epithelial cells, the other major host cells that are known to be a target for AIEC are macrophages; …
-
The Effects of Temperature On The Durability Of Resistance Of Soybean To Soybean Mosaic Virus
… to provide a range of reactions to selected SMV pathotype groups. For example Rsv1-y and Rsv1-k give a necrotic response to SMV G4 and SMV G6, respectively, while both are resistant to SMV G1. To determine the durability of resistance under heat shock conditions, the symptoms were observed for …
-
Intraspecific Variability within Globodera tabacum solanacearum and Selection for Virulence Against Flue-Cured Tobacco
… G. t. tabacum or G. t. virginiae. Although no pathotype differences have been found within G. t. solanacearum, the average Jaccard's similarity index among isolates of G. t. solanacearum was 74%, representing greater variation than that observed across different pathotypes of the closely …
-
Characterization of E. coli strains from rural communities in the Vhembe District (Limpopo South Africa)
… stored water samples. The most prevalent E. coli pathotype was EPEC with the virulence gene eae. Atypical EPEC (60.44%) outnumbered the typical EPEC (5.49%). The pathotype ETEC was detected in 41.76% samples and EHEC in 9.89% samples. Transmission pathway was observed from the different …
-
Etiologia da diarréia infantil na região metropolitana do Rio de Janeiro: caracterização de possíveis marcadores de virulência em Escherichia coli enteropatogênica (EPEC) e de uma adesina relacionada ao fenótipo agregativo em amostras que coexpressam adesão localizada
… biofilms may lead to the emergence of a new EPEC pathotype, which could be more adapted to colonize and persist in the intestinal tract. The occurrence of E. coli strains co-expressing LA/AA might be further analyzed and monitored in other geographic regions. Furthermore, in this study, we …
-
Delineation of Aeromonas hydrophila Pathotypes by Dectection of Putative Virulence Factors using Polymerase Chain Reaction and Nematode Challenge Assay
… of humans and other vertebrates. To delineate pathotypes, the genomes of twenty-eight <em>Aeromonas </em>isolates<em> </em>were screened by PCR to determine the presence of virulence factors including: aerolysin (<em>aerA</em>)<em>, </em>cytotoxic enterotoxin (<em>act</em>), hemolysin …
-
Assessment of microbial quality and safety of ground beef/product sold in differrent retailers around Thohoyandou Area, Vhembe District, Limpopo
… to determine different virulence genes and pathotypes. Hemolysin test was done in blood agar plates to identify virulence characteristics of E. coli isolates. Results: Out of 160 samples analyzed, E. coli was detected in 80 (50%), Staphylococcus spp. in 117 (73.12%), Salmonella in 60 …
-
IDENTIFICATION OF ADHERENT-INVASIVE ESCHERICHIA COLI (AIEC) VIRULENCE DETERMINANTS LEADING TO ACTIVATION OF PATHOGENIC TH17 CELLS IN CROHN¿S DISEASE.
… enrichment of adherent-invasive E. coli (AIEC) pathotype. Notably, in a recent yet unpublished work, we described a new subset of pathogenic Th17 cells (pTh17), selectively enriched in the gut of CD patients that are specifically activated by AIEC strain. However, the molecular mechanism by …
-
Novel molecular markers of disease-association among strains of Streptococcus suis: a genomic approach
… analyses used to select three genetic markers to pathotype S. suis - differentiate isolates of the same species based on their ability to cause disease; going on to describe the design and evaluation of a multiplex-PCR tool targeting the three newly defined "pathotyping markers" in comparison to …
-
[EMBARGOED] Analysis of cereal cyst nematode resistance mechanisms in barley
… resistance against the Australian H. avenae pathotype Ha13 they have been widely used in barley breeding. Despite CCN resistance loci having been mapped in barley and other cereals, no resistance genes have been isolated and characterized. Recently both Rha2 and Rha4 have been fine-mapped and …
-
Characterization of oomycete species causing soybean diseases in Illinois and management applications
… differentials with known Rps genes. Sixteen pathotypes were identified among the Ph. sojae isolates, and no pathotypes were identified for Ph. sansomeana. The aggressiveness and fungicide sensitivity of the isolates was also evaluated. Aggressiveness assays were performed in the greenhouse …
-
Caractérisation génotypique et phénotypique d’isolats de Xanthomonas hortorum pv. vitians causant la tache bactérienne de la laitue au Canada
… au Canada, d’identifier et de distinguer les pathotypes présents et enfin, de fournir des outils diagnostiques permettant la détection de ces pathotypes, à partir de cultures pures, en utilisant des techniques de qPCR. La réception hebdomadaire d’échantillons de laitues symptomatiques durant …