Tarbiat Modares University Journal of Agricultural Science and Technology 1680-7073 15 1 2013 01 01 Fungal Pathogens Associated with Grapevine Trunk Diseases in Iran 137 150 15209 EN H. Mohammadi Department of Plant Protection, College of Agriculture, Shahid Bahonar University, Kerman, Islamic Republic of Iran. Z. Banihashemi Department of Plant Protection, College of Agriculture, Shiraz University, Shiraz, Islamic Republic of Iran. D. Gramaje Instituto Agroforestal Mediterráneo, Universitat Politècnica de València, Camino de Vera s/n, 46022-València, Spain. J. Armengol Department of Crop Protection, Institute for Sustainable Agriculture (IAS), Spanish National Research Council (CSIC), Alameda del Obispo s/n, APDO. 4084, 14004 Córdoba, Spain. Journal Article During 2004–2007 various own rooted vineyards were inspected to study the fungi associated with vine trunk diseases in Iran. Samples from declining vines showing yellowing and reduced growth and different symptoms in wood, including browning of the wood, necrosis, brown and black streaking and white rot were collected. Fungal isolations were made from affected tissues onto Malt Extract Agar (MEA) supplemented with 1 g l^–1 streptomycin sulphate (MEAS). Based on morphological and molecular characteristics, the following species were identified: <em>Phaeoacremonium (Pm.) aleophilum, Phaeomoniella </em>(<em>Pa.</em>)<em> chlamydospora</em>and less frequently <em>Pm. parasiticum</em>, <em>Pm. inflatipes</em>,<em> Pm. cinereum,</em> <em>Cylindrocarpon liriodendri</em>, <em>Diplodia seriata</em> and <em>Neofusicoccum parvum</em>. Results of the pathogenicity tests under field conditions showed that <em>Pa.</em><em> chlamydospora</em> and <em>Phaeoacremonium</em> spp. caused large wood discoloration 10 months after inoculation without any external foliar symptoms. <em>Phaeomoniella chlamydospora</em> caused larger lesions than <em>Phaeoacremonium</em> spp. All inoculated species were re-isolated from the margin of the lesions completing Koch’s postulates. This study represents the first comprehensive work that investigates the molecular and morphological identification and pathogenicity of <em>Phaeoacremonium</em> spp. and <em>Pa.</em><em> chlamydospora</em> associated with vine decline in Iran. This is also the first report of <em>Pm. inflatipes</em>, <em>N. parvum</em> and <em>D. seriata</em> associated with grapevine decline in this country. https://jast.modares.ac.ir/article_15209_60dfd04289ecf518443e02289a0cd633.pdf