Entomoparasitic nematodes are natural control agents for many insect pests, including fleas that transmit Yersinia pestis, a causative agent of plague, in the natural foci of this extremely dangerous zoonosis. We examined the flea samples from the Volga-Ural natural focus of plague for their infestation with nematodes. Among the six flea species feeding on different rodent hosts (Citellus pygma...

The phylogeny of the nuclear large ribosomal subunit (LSU) rDNA from Peronosporomycetes (Oomycota) was studied. Five orders Rhipidiales, Leptomitales, Saprolegniales, Pythiales and Peronosporales were included in the study in order to reveal phylogenetic relationships within the group. Based on maximum parsimony, neighbour-joining and maximum-likelihood the Peronosporomycetes seem to have evolv...

Phylogenetic relationships among nematodes of the strongylid superfamily Metastrongyloidea were analyzed using partial sequences from the large-subunit ribosomal RNA (LSU rRNA) and small-subunit ribosomal RNA (SSU rRNA) genes. Regions of nuclear ribosomal DNA (rDNA) were amplified by polymerase chain reaction, directly sequenced, aligned, and phylogenies inferred using maximum parsimony. Phylog...

Pisolithus albus (Basidiomycota, Sclerodermataceae) is reported here for the first time from Egypt where it was found on Karaman Island in Sohag Governorate. It forming an ectomycorrhizal association with Eucalyptus occidentalis and Vachellia nilotica. The fungus also near two potentially new hosts: Paspalum distichum Dodonaea viscosa; however, mycorrhizal connections these hosts not proven. Ph...

Here we describe, determine the prevalence, and examine the host-specificity of some parasitic nematode microfilariae in selected bird species from West and Central Africa. We used microscopy to determine the prevalence of microfilariae in 969 host individuals representing 121 rainforest bird species from Cameroon, Côte d'Ivoire and Equatorial Guinea. Thirteen (11%) of these potential host spec...

Trypanosoma cruzi, the agent of Chagas disease, can be subdivided into six discrete typing units (DTUs), TcI, TcIIa, TcIIb, TcIIc, TcIId or TcIIe, each having distinct epidemiologically important features. Dozens of genetic markers are available to determine the DTU to which a T. cruzi isolate belongs, but there is no consensus on which should be used. We selected five assays: three polymerase ...

Abstract Taxonomy of Basidiodendron caesiocinereum complex is revised based on morphological and molecular methods (with the use nc LSU rDNA, ITS TEF1 regions). The basidiospore ornamentation justified as a key character for species recognition in group. As redefined here, B. an angiosperm-dwelling with smooth basidiospores. Bourdotia cinerella var. trachyspora are proved to represent separate ...

The classification of Trachelomonas and Strombomonas is based on the morphology loricae, which may not reflect phylogenetic relationships. There are different views relationship between two genera. It thus important for researchers to classify genera more characteristics besides such as protoplast molecular data, establish a natural system. In this study, 29 strains (13 species) 12 (eight were ...

There is no consensus barcoding region for determination of arbuscular mycorrhizal fungal (AMF) taxa. To overcome this obstacle, we have developed an approach to sequence AMF marker within the ribosome-encoding operon (rDNA) that covers all three widely applied variable molecular markers. Using a nested PCR specific AMF, amplified part (c. 2.5 kb) rDNA spanning majority small subunit rRNA (SSU)...