First Report of Passalora Leaf Spot Caused by Passalora bougainvilleae on Bougainvillea in Mexico
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First Report of Leaf Spot Caused by Alternaria tenuissima on Black Chokeberry (Aronia melanocarpa) in Korea
In July 2015, diseased leaves of black chokeberry (Aronia melanocarpa) were observed in Danyang and Gochang, Korea. The symptoms appeared as circular or irregular brown leaf spots, from which Alternaria tenuissima was isolated. The isolates were cultured on potato dextrose agar, and their morphological characteristics were observed under a light microscope. The colonies were whitish to ash colo...
متن کاملPassalora stromatica sp. nov. associated with leaf spots of Tithonia diversifolia in Brazil
Tithonia diversifolia, a member of Compositae native to Central America that produces showy sunflower-like flowers, became an invasive weed in other continents after it was introduced as an ornamental. Little is known about fungal pathogens infecting this plant. Knowledge of its mycobiota is of interest for future biocontrol programmes for T. diversifolia. In Brazil, a cercosporoid hyphomycete ...
متن کاملGenetics of Dothistromin Biosynthesis in the Peanut Pathogen Passalora arachidicola
The peanut leaf spot pathogen Passalora arachidicola (Mycosphaerella arachidis) is known to produce dothistromin, a mycotoxin related to aflatoxin. This is a feature shared with the pine needle pathogen Dothistroma septosporum (Mycosphaerella pini). Dothistromin biosynthesis in D. septosporum commences at an unusually early stage of growth in culture compared to most other fungal secondary meta...
متن کاملکمک به شناسایی جنس Passalora در ایران
به منظور شناسایی گونه‌های Passalora، 9 نمونه گیاهی با علایم لکه برگی از نقاط مختلف استان‌های اردبیل، آذربایجان شرقی و استان‌های شمالی در طول بهار سال‌های 90-1389 جمع‌آوری و جهت مطالعه به آزمایشگاه منتقل شدند. علاوه بر این نمونه‌های موجود در مجموعه قارچ‌های وزارت جهاد کشاورزی واقع در موسسه تحقیقات گیاه‌پزشکی کشور نیز بازبینی شدند و کلید تشخیص برای 14 گونه فراهم گردید. با بررسی نمونه‌ها، 8 گونه ا...
متن کاملLeaf Spot of Yam Caused by Pseudophloeosporella dioscoreae in Korea
Leaf spot symptoms were frequently observed on yam plants grown in the Yeoju area in Korea during a disease survey in 2008. A total of five isolates of Pseudophloeosporella sp. were obtained from the infected leaves of yam plants. All of the isolates were identified as Pseudophloeosporella dioscoreae based on their morphological and cultural characteristics. A phylogenetic tree derived from the...
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ژورنال
عنوان ژورنال: Plant Disease
سال: 2011
ISSN: 0191-2917,1943-7692
DOI: 10.1094/pdis-11-10-0787