Verticillium wilt is an economically important disease which inflicts serious losses in potato, cotton, alfalfa, some vegetable crops and fruit trees and occasionally ornamentals. Verticillium dahliae, infected cultivated species and weeds were collected from several areas in Iran during tewelve years from 1993-2005 and studied for their vegetative compatibility, host range and pathogenecity. T...

Five bacterial species considered to be potential pathogens in acute exacerbations of chronic bronchitis, cystic fibrosis, and pneumonia-Branhamella catarrhalis, Haemophilus parainfluenzae, Pseudomonas aeruginosa, Staphylococcus aureus and Streptococcus pneumoniae-were evaluated for their potential to synthesise histamine in vitro. Bacterial species commonly isolated from infected sputum but ge...

to identify the alternaria spp. pathogenic to tomato and potato, surveys of tomato and potato fields were made during 2009- 2010 in west azerbaijan province. in total about 261 isolates belonging to alternaria genus were isolated and purified. based on morphological studies 6 species, namely: a. alternata, a.tenuissima, a. interrupta, a. arborescense, a. brassicina and a. tomatophila from tomat...

diseased samples with root rot symptoms were collected from different sugar beet growing areas. from rotted roots, 20 fungal isolates were identified as fusarium solani based on morphological characteristics .pathogenecity of the isolates was studied in in vitro condition on sugar beet roots. the results showed pathogenic variability among the isolates. cluster analysis divided the isolates int...