Gholam Khodakaramian

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Streptomyces species strain GK18, isolated in Iran, induced deep-pitted lesions on potato tubers, lesions different from the raised lesions induced by the usual scab-causing phytotoxin, thaxtomin. In addition, neither thaxtomin production nor hybridization to its biosynthetic probe was detected for strain GK18, suggesting the production of a different(More)
Petroleum-polluted soils are a common disaster in many countries. Bioremediation of oil contamination in soils is based on the stimulation of petroleum-hydrocarbon-degrading fungal and microbial communities. A field study was conducted in a petroleum-contaminated site to find petroleum-resistant plants and their root-associated fungal strains for use in(More)
Forty-five isolates from root nodules of chickpea (Cicer arietinum L.) growing in the western and northwestern regions of Iran were characterized by phenotypic properties, repetitive element sequence-based (rep)-PCR, and 16S rRNA sequences. Based on phenotypic features, the isolates could be divided into three main groups at 92 % similarity. Nodulating(More)
We report a system for the efficient removal of a marker flanked by two loxP sites in Streptomyces coelicolor, using a derivative of the temperate phage phiC31 that expresses Cre recombinase during a transient infection. As the test case for this recombinant phage (called Cre-phage), we present the construction of an in-frame deletion of a gene, pglW,(More)
Alfalfa (Medicago sativa), the world’s most influential forage crop, is infected by many diseases such as alfalfa bacterial wilt disease. The causal agent of bacterial crown and root rot and wilt disease is Pseudomonas viridiflava, which is a substantial pathogen of alfalfa worldwide. This pathogen spreads through the xylem and under field conditions,(More)
For the first time in 1989 citrus bacterial canker disease has seen on Citrus aurantiifolia in southern Iran. A total of 43 strains from affected citrus trees, ten strains from South Korea and representative from all known five pathotypes of Xanthomonas axonopodis pathogenic on citrus trees were used in this study. Isolated strains from Iran were(More)
In 2012, a leaf spot disease on walnut seedlings was observed in Hamedan province of Iran. The spots were necrotic with yellow halos. Symptomatic samples were collected and suspected bacterial agent was isolated on nutrient agar medium. Phenotypic characteristics such as production of fluorescent pigment on KB medium, LOPAT test and utilization of various(More)
The phylogenetic diversity of 29 rhizobial strains nodulating Phaseolus vulgaris in Iran was analysed on the basis of their core and symbiotic genes. These strains displayed five 16S rRNA-RFLP patterns and belong to eight ERIC-PCR clusters. The phylogenetic analyses of 16S rRNA, recA and atpD core genes allowed the identification of several strains as(More)
Iran is one of the most important potato-producing countries in Asia and Oceania. Approximately 20 percent of potato cultivation in Iran occurs in the North-western provinces. Pectobacterium and Dickeya species cause important diseases in potato crop. They may incite blackleg and are responsible for tuber soft rot in storage, thereby reducing yield and(More)