We have discovered that, in certain crosses of natural isolates of Neurospora intermedia, linear and circular mitochondrial plasmids of the maternal parent are not transmitted to the progeny. This contrasts with the maternal transmission of organellar genetic elements generally observed in crosses between laboratory strains and between other natural isolates. Formally, failure of plasmid transm...

The study of speciation is key to understanding the origins of biodiversity. Model organisms, with a host of genetic and molecular tools, are crucial to dissecting the genetics of speciation. Crosses between the recently-discovered Caenorhabditis sp. 9 and the well-known C. briggsae produce fertile F1 hybrid females, opening the door to genetic studies of speciation for the first time within th...

Background and Purpose: Fungal infection by species of pathogenic Candida with antifungal resistance is currently a serious problem. Treatment new medications becoming more challenging to manage this type infection. The present study aimed investigate the effect essential oils (EOs) against itraconazole-resistant Candida. Materials Methods: Seven were tested on 15 clinical isolates from patient...

background and objectives: the pathogenic strains of escherichia coli cause severe septicemia, urinary tract infection and wound sepsis. resistance of this organism to the expanded-spectrum cephalosporins occurs via the production of extended-spectrum β-lactamases (esbls) such as tem and shv. these enzymes hydrolyze oxyimino cephalosporins (cefotaxime, ceftazidime) and monobactams (aztreonam). ...

The nematode Caenorhabditis elegans reproduces predominantly as a self-fertilizing hermaphrodite, and this drives laboratory populations to be homozygous at all genetic loci. Passaging of stocks can lead to fixation of spontaneous mutations, especially when the latter do not result in a selective disadvantage under laboratory conditions. Life span may be such a trait, since a comparison of six ...

a determination of the genetic variation of the fungus isolated from graminous weeds which is highly beneficial to know probable genetic recombination in the fungus populations was done for the first time in iran through pcr reaction. the isolates of fungus “magnaporthe grisea” from graminous weed hosts and from rice were analyzed through rapd-pcr to assay the mating type and genetic diversity....

Out of 163 samples of suspected volunteer plants to fungal infection collected from different areas of Hamedan province (W Iran), 49 isolates of the anamorphic fungi were identified according to morphological and molecular features. Based on these, 13 species were identified and classified in six genera.

Background: The basic plant material consisted of 9 mungbean and 5 urdbean genotypes. 42 different crosses were made comprising 13 Vigna radiata x V. radiata, 4 mungo 25 crosses. Varying degree success has been achieved in obtaining intraspecific interspecific having desired variability for yield contributing traits along with MYMV resistance. Methods: present investigation was done at Agricult...