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Showing 4 results for Bipolaris
Ten Seed borne Pathogenic Fungi
Zeinab Sharafi , Mehdi Sadravi,
Volume 4, Issue 1 (3-2015)
Abstract
Sharafi Z. & Sadravi M. 2015. Ten seed borne pathogenic fungi. Plant Pathology Science 4(1):34-45. 
Most crops are propagated by seed. A large number of pathogenic fungi can transmitted by seed and cause epidemy of destructive plant diseases. Treatment of seeds has been shown to prevent plant disease epidemics caused by seedborne fungal pathogens. In this paper, morphological characteristics of ten pathogenic fungi belong to the genera, Alternaria, Aspergillus and Bipolaris, which can decay or reduce the germination of seeds or cause the brown leaf spot disease of cereals, has been described.

Important diseases of turf in Iran
Mrs. Mahsa Samiee, Mahdi Davari,
Volume 9, Issue 2 (8-2020)
Abstract
Samiee M, Davari M (2020) Important diseases of turf in Iran. Plant Pathology Science 9(2):119-128.        DOI: 10.2982/PPS.9.2.119.

Turf grass is the most important grown plant in urban green space, which functions such as temperature adjustment, increase in relative humidity, air softness and dust absorption. Fungal and fungal-like diseases are the most common lawn diseases in Iran, affecting this plant at all stages of growth, causing its decline. Pythium, Fusarium, Microdochium, Rhizoctonia, Bipolaris, Pyricularia and Colletotrichum species are known as damping-off, root and crown rot, leaf spot and anthracnose pathogens of lawns in Iran. The symptoms of these diseases, the morphological characteristics of pathogens and the methods for their management are described.
Rice seed-borne fungi in Kohgiluyeh and Boyer-Ahmad Province of Iran
Elham Bahmani , Mehdi Sadravi, Mohammad Abdollahi,
Volume 11, Issue 1 (3-2022)
Abstract
Bahmani E, Sadravi M, Abdollahi M (2022) Rice seed-borne fungi in Kohgiluyeh and Boyer-Ahmad Province of Iran. Plant Pathology Science 11(2):13-23.   Doi: 10.2982/PPS.11.1.13
 
Introduction: The province of Kohgiluyeh and Boyer-Ahmad in southwestern Iran is an important rice-growing area. Seed-borne fungi can cause harmful diseases, so identifying them is important to prevent these diseases. Materials and Methods: Thirty seed samples of four rice varieties were collected from different regions of the province. Seed-borne fungi were isolated by using the potato-dextrose-agar plate, blotter, and deep freezing blotter methods and after purification, their morphological characteristics were studied and they were identified. The total frequency of seeds infected with fungi and the frequency of seeds infected with each fungus were calculated. The effect of these fungi on seed germination and root growth of four cultivars Champa, Shamim, Gerdeh, and Lenjan was tested by placing them between wet sterile filter papers. Results: Twenty-eight fungi of 11 genera vs. Alternaria, Aspergillus, Bipolaris, Cladosporium, Curvularia, Epicoccum, Fusarium, Penicillium, Pyrenophora, Rhizopus, and Ulocladium were identified in these thirty samples. These fungi did not significantly affect seed germination of these varieties, but caused root rot in them. The average infestation of the Champa variety was lower than the others. Conclusion: The Champa variety is relatively resistant to these fungi, followed by Shamim, Lenjan, and Gerdeh respectively.
 

Fungi associated with rapeseed roots and crown in Lorestan Province, Iran
Md Mostafa Darvishnia, Maryam Mirderikvand, Samira Pakbaz,
Volume 14, Issue 2 (4-2025)
Abstract
Rapeseed is one of the major oilseed crops worldwide. Owing to its high yield potential per unit area, its cultivation has expanded considerably over the past three decades in many countries, including Iran. Several soil-borne fungi can cause root and crown rot of rapeseed. This study was conducted to identify fungi associated with the roots and crowns of diseased rapeseed plants collected from fields in Lorestan Province, western Iran. Sixty-one samples were collected from the roots and crowns of diseased rapeseed plants in Mamulan, Khorramabad, and Selseleh counties of Lorestan Province, Iran, during the 2023–2024 growing season. Fungi were isolated and purified using selective culture media, and their morphological characteristics were examined. Molecular identification was performed by sequencing the internal transcribed spacer (ITS) and translation elongation factor 1-alpha (TEF1-α) genomic regions. Phylogenetic relationships between the obtained isolates and other species within the corresponding genera were subsequently determined.  Based on morphological and phylogenetic analyses, four fungal species associated with diseased rapeseed roots and crowns in the study area were identified as Fusarium clavum, Bipolaris coffeana, Alternaria alternata, and Alternaria tenuissima. Fusarium clavum has previously been reported as a causal agent of root and crown rot of rapeseed in Iran. Bipolaris coffeana is reported for the first time from rapeseed in Lorestan Province. The results demonstrate that the integration of morphological characteristics with sequencing of the ITS and TEF1-α genomic regions provides a reliable and accurate approach for identifying species of Alternaria, Fusarium, and Bipolaris. The morphological characteristics of the identified fungi are described, and their phylogenetic relationships with other species within each genus are presented. The findings highlight the importance of continuous monitoring of soil-borne fungal pathogens in rapeseed-growing fields to facilitate their timely detection and effective disease management.

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