Grey leaf spot is a serious yield-reducing disease of maize (Zea mays) in many parts of the world where this crop is cultivated. The causal organism associated with the disease is Cercospora zeae-maydis. Two potential sibling species have been recognized as Groups I and II. The DNA sequences for the internal transcribed spacers (ITS1 & ITS2), the 5.8S rRNA gene, elongation factor 1-alpha, histo...

Cilj ovog rada bio je analizirati provedenu zaštitu u suzbijanju pjegavosti lista šećerne repe (Cercospora beticola Sacc.) te prikazati ostvaren prinos i kvalitetu petogodišnjem razdoblju (2016. – 2020.). U analiziranom prvo tretiranje fungicidom provodilo se zbog prevencije već prvoj ili drugoj dekadi lipnja. Ovisno o vegetacijskoj sezoni, zaštita provedena 4 2018.) 5 navrata (2019. Razmak izm...

Plant pathogenic fungi in eight genera produce light-activated perylenequinone toxins that are toxic to plants via the generation of activated oxygen species, particularly singlet oxygen. Studies on the cercosporin toxin produced by Cercospora species have documented an important role for this toxin in pathogenesis of host plants. Cercosporin-generated active oxygen species destroy the membrane...

The third part of a series of monographic treatments of cercosporoid fungi (formerly Cercospora s. lat., Mycosphaerellaceae, Ascomycota) continues with a treatment of taxa on monocots (Liliopsida; Equisetopsida, Magnoliidae, Lilianae), covering asexual and holomorph species with mycosphaerella-like sexual morphs on true grasses (Poaceae), which were excluded from the second part. The species co...

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...

Introducción. El tizón foliar por Cercospora y la mancha púrpura de semilla son enfermedades endémicas soja en Argentina. Objetivo. Evaluar prevalencia, incidencia severidad del Argentina durante dos años consecutivos, 2015 2016. Materiales métodos. Los muestreos se realizaron sobre un total 132 lotes. La evaluación campo etapa reproductiva R6. análisis prevalencia e realizó laboratorio. Result...

Fitopatógenos interferem de forma negativa na produção e qualidade final dos produtos agrícolas comercializados. O trabalho tem como objetivo verificar o controle alternativo fungos Cercospora beticola sacc, Phytophthora infestans Colletotrichum lindemuthianum, utilizando as doses 0,2; 0,4; 0,6; 0,8 µL mL-1 do óleo essencial guaçatonga, em comparação a testemunha com somente água. Avaliou- se i...