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A crown canker disease causing yellowing and wilting of the leaves was observed on muskmelon (Cucumis melo) plants in a number of greenhouses in Shouguang county, Shandong province, China, during April 2014 to July 2015, resulting in serious economic losses. Black sporodochia with white mycelial tufts emerged on surfaces of lesions at the base of the stem. Eleven fungal strains were isolated from infected tissues. On the basis of morphological features, ITS-5.8S rDNA and TEF1 sequence analysis, the isolates were identified asParamyrothecium roridum(Tode) L. Lombard & Crous (syn.Myrothecium roridumTode). The pathogenicity of the isolates was confirmed. The morphological characteristics of reisolated strains from inoculated muskmelon plants showing symptoms of crown canker were consistent with the original strains. A host range test indicated that strains had a wide range of hosts. To the best of our knowledge, this is the first report of muskmelon crown canker caused byP. roridumin China. This disease could have a significant economic impact on muskmelon production. D’avril 2014 à juillet 2015, un chancre du collet causant le jaunissement et le flétrissement des feuilles a été observé chez des plants de melon brodé (Cucumis melo) dans un certain nombre de serres dans le comté de Shouguang, dans la province du Shandong, en Chine, ce qui a occasionné d’importantes pertes financières. Des conidies noires accompagnées de touffes mycéliennes blanches émergeaient à la surface des lésions formées à la base de la tige. Onze souches fongiques ont été isolées à partir de tissus infectés. En se basant sur les traits morphologiques, l’ITS-5.8S de l’ADNr et l’analyse des séquences du TEF1, les isolats ont été identifiés en tant queParamyrothecium roridum(Tode) L. Lombard & Crous (syn.Myrothecium roridumTode). La pathogénicité des isolats a été confirmée. Les caractéristiques morphologiques des souches isolées de nouveau, issues de plants de melon brodé inoculés affichant des symptômes du chancre du collet, correspondaient à celles des souches originales. Un test de gamme d’hôtes a indiqué que les souches possédaient une vaste gamme d’hôtes. À notre connaissance, il s’agit de la première mention de chancre du collet chez le melon brodé causé parP. roridumen Chine. Cette maladie pourrait entraîner de fâcheuses conséquences financières pour la production de melon brodé. [ABSTRACT FROM AUTHOR]

A leaf spot disease was observed on cabbage (Brassica oleraceaL. var.capitata) affecting 80% of plants growing in greenhouses and fields in Serdang, Selangor, Malaysia. Symptomatic leaf samples were collected from infected plants and isolations made on agar medium. Single-spore isolates from resulting colonies were identified based on cultural and morphological characteristics asPithomyces chartarum. Morphological identification was confirmed by sequence analysis of the internal transcribed spacer (ITS) regions 1 and 2, including 5.8S rDNA (ITS1-5.8S-ITS2). Pathogenicity tests indicated thatP. chartarumcauses leaf spot on cabbage. This is the first report of leaf spot caused byP. chartarumon cabbage in Malaysia. [ABSTRACT FROM PUBLISHER]