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Articles by M.J. Soleimani
Total Records ( 2 ) for M.J. Soleimani
  M. Esmailzadeh , M.J. Soleimani and H. Rouhani
  Tomato stem canker caused by Alternaria alternata f. sp. lycopersici, is one of the most devastating diseases worldwide. In this study, possible effect of using Salicylic Acid (SA) in host resistance induction against tomato stem canker was investigated. Foliar applications of salicylic acid with two concentrations of 200 and 400 μM were tested against fungal pathogen. The results demonstrated that use of 200 μM dosage of SA was insufficient for inducing disease resistance. However, applications of SA in concentration 400 μM significantly reduced disease index as compared with infected control. There were significant effects of plant cell reactions in terms of percentage of penetration events that occurred at the site of attempted penetration. SA pre-treated plants were identified with higher numbers of single cell necrosis (hypersensitive response), but lower blighted areas and discolorations, as compared with non treated plant (control). The results obtained from high performance thin layer chromatography (HPTLC) analysis indicated that there is highly correlation between increasing of the endogenous levels of free SA in treated plants and reduction of the blighted leaf areas. SA pre-treatment plants caused an increase in the endogenous free SA levels in tomato leaves which resulted in systemic resistance induction.
  K. Chehri , B. Salleh , T. Yli-Mattila , M.J. Soleimani and A.R. Yousefi
  Fusarium is one of the most important pathogenic and toxigenic fungi widely distributed all over the world, including Iran. Fusarium species are found frequently in stored agriculture products especially wheat. The objective of this study was to identify Fusarium species associated with stored wheat seeds and their pathogenicity on root and head of wheat in Kermanshah, the leading province in wheat production in Iran. In this survey 75 seed samples of stored wheat were collected from 10 different regions during 2006-2008 and tested for the presence of Fusarium. Fusarium spp. were found in 51 (68 %) of 75 samples. A total of 580 Fusarium strains were isolated, identified and preserved. All these strains belong to 20 Fusarium spp. according to morphological characters. Each conidial suspension of selected strains representing all species was evaluated for their pathogenicity on roots and spikes of healthy wheat var. Fallat in the greenhouse. F. graminearum, F. crookwellense, F. trichothecioides, F. culmorum and F. verticillioides were the most pathogenic to wheat’s head. Foot rot assessment revealed that F. pseudograminearum and F. culmorum were the most damaging species. Of the Fusarium isolates, F. graminearum was the most prevalent followed by F. verticillioides and F. proliferatum. This is the first comprehensive report on identity and distribution of Fusarium spp. from stored wheat seeds in Iran while F. nelsonii was reported for the first time from wheat seeds in Iran.
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