a taxonomic overview of the genus anticharis (scrophulariaceae) especially in namibia and angola is presented. three new species are described, viz. a. namibensis b. nord., a. kaokoensis b. nord. and a. angolensis b. nord. a key to the anticharis species of namibia and angola is presented. some aspects of phytogeography, molecular phylogeny and photosynthetic pathways (c3-c4) are briefly discus...

conclusions in this study, phylogenetic reconstruction of hcv-1 sequences clearly indicated for molecular tracing and ancestral relationships of the hcv genotypes in iran, and showed the likelihood of domestic origin for hcv-1a and various origin for hcv-1b. evidence acquisition the phylogenetic analyses were performed based on the nucleotide sequences of ns5b gene of hcv genotype 1 (hcv-1), wh...

sequence analysis and phylogenetic study of hemagglutinin (ha) gene of h9n2 subtype of avian influenza virus isolates (outbreaks of 1998-2002) in tehran province (iran) were studied. two sets of forward and reverse primers in highly conserved regions, based on sequences of ha gene in genbank, were designed. pcr products of a 430-bp fragment of 16 isolates were sequenced and then were aligned wi...

conclusions sequence and structural diversity of the 3'utr variable region and poly u/uc region found in the local isolates indicate specificity in the regulating elements of 3'utr that might be associated with differential replication efficacy of the hcv pakistani isolates. the study necessitates functional characterization of these regulating elements to elucidate variable viral eff...

results comparative analysis of predicted amino acids in the phylogenetic tree showed high similarity between c. glabrata and s cerevisiae. besides, c. glabrata demonstrated the capability to grow in glucose levels as low as 0.01% in the spot dilution assay. in qrt-pcr analysis, differential expressions were observed in selected genes when c. glabrata was subjected to different glucose concentr...

background: cucumber mosaic virus (cmv) from the bromoviridae family, is one of the most widespread plant viruses in the world. objectives: in the present study tomato fields in guilan, isfahan, khorasan razavi, khuzestan and tehran provinces were surveyed to determine the presence of cmv subgroups during 2011-2012. materials and methods: out of 305 symptomatic leaf samples tested by enzyme-lin...

in this study, to know about the phylogeny of escherichia coli isolated from broilers with collibacillosis in tabriz, 70 e. coli isolates recovered from broilers with collibacillosis were characterized for phylogenetic group (a, b1, b2, d) by multiplex pcr. of the all 70 samples, 35 (50%) isolates were classified as type a, 32 (45%) as type d, 2 (2.8%) as type b1 and 1 (2.8%) as type b2. thi...

anamorphs of pleosporaceae are important plant pathogenic fungi. despite efforts to clarify phylogenetic relationships of this group there is still uncertainty about taxonomic position of some genera. therefor to elucidate relationships among anamorphic form of some pleosporalean taxa, the internal transcribed spacer (its) and rna polymerase second largest subunit (rpb2) of some members were de...