introduction: the early blight of tomato caused by alternaria alternata is one of the most important and destructive diseases in khuzestan province. study genetic structure of a. alternata populations provides different levels of information in the management of early blight disease in tomato farms. short sequence repeat (ssr) markers were used to determine the genetic structure and estimate ge...

Eight Enterobacteriaceae strains that produce zeaxanthin and derivatives of this compound were isolated from a variety of environmental samples. Phylogenetic analysis showed that these strains grouped with different clusters of Erwinia type strains. Four strains representing the phylogenetic diversity were chosen for further characterization, which revealed their genetic diversity as well as th...

Septoria tritici blotch (STB), caused by the fungus Zymoseptoria tritici, is a major constraint in global wheat production. The lack of genetic diversity modern elite cultivars largely hinders improvement STB resistance. Wheat landraces are reservoirs untapped diversity, which can be exploited to find novel resistance genes or alleles. Here, we characterized 188 Swiss for using four Z. isolates...

Diversity in forms of animal life, diversity in function of an organisms cells, and diversity in function of a single cell over its lifetime or in response to different stimuli drives a whole plethora of processes in biology. Gene control circuitry actually dictates whether or not, and when and by how much a particular gene should be expressed in a cell in order to create such diversity. Such c...

The elevational and latitudinal diversity patterns of microbial taxa have attracted great attention in the past decade. Recently, the distribution of functional attributes has been in the spotlight. Here, we report a study profiling soil microbial communities along an elevation gradient (500-2200 m) on Changbai Mountain. Using a comprehensive functional gene microarray (GeoChip 5.0), we found t...

study of genetic relationships is a prerequisite for plant breeding activities as well as for conservation of genetic resources. since the hybrid canola have more yield than inbred lines, determine the genetic diversity of this have particular importance. in the present study, genetic diversity among 36 genotype of brassica sp. were determined using inter simple sequence repeat (issr) markers. ...

Background: Populations of Magnaporthe, the causal agent of rice blast disease, are pathotypically and genetically diverse and therefore their interaction with different rice cultivars and also antagonistic microorganisms are very complicated. Objectives: The objectives of the present study were to characterize phylogenetic relationships of 114 native  Magnaporthe strains, isolated from rice a...