We investigated the identity and genetic diversity of more than 100 isolates belonging to Phyllosticta (teleomorph Guignardia), with particular emphasis on Phyllosticta citricarpa and Guignardia mangiferae s.l. occurring on Citrus. Phyllosticta citricarpa is the causal agent of Citrus Black Spot and is subject to phytosanitary legislation in the EU. This species is frequently confused with a ta...

The role of the mango bud mite, Aceria mangiferae, in carrying conidia of Fusarium mangiferae, vectoring them into potential infection sites, and assisting fungal infection and dissemination was studied. Following the mite's exposure to a green fluorescent protein-marked isolate, conidia were observed clinging to the mite's body. Agar plugs bearing either bud mites or the pathogen were placed o...

Malformation caused by Fusarium mangiferae is one of the most destructive mango diseases affecting the canopy and floral development, leading to dramatic reduction in fruit yield. To further understand the mechanism of interaction between mango and F. mangiferae, we monitored the transcriptome profiles of buds from susceptible mango plants, which were challenged with F. mangiferae. More than 99...

Cassava root rots are important diseases in different agroecological zones of West Africa. The causing pathogens were collected from 101 farmers’ fields in forest mosaic savanna, southern guinea savanna, northern guinea savanna and sudan savanna of Benin were isolated, identified and analyzed for their virulence. A total of 51 isolates were found showing different disease reaction with 13.7% hi...

In order to determine factors contributing to the decline of the Pacific madrone (Arbutus menziesii), 103 trees were surveyed and rated on a scale of 1–4. The performance rating was then compared with the following plant parameters and site conditions: size, growth habit, bark characteristics, location and size of cankers on the trunk, light exposure, slope, soil characteristics, management pra...

The type material of six species of Porricondylinae (Diptera: Cecidomyiidae) described from the Neotropical Region between 1905 and 1936 is re-examined. On the basis of revised adult descriptions the classification of these species is analyzed and discussed. Lectotypes are designated for Asynapta citrinae Felt, A. mangiferae Felt, Holoneurus occidentalis Felt, and Porricondyla gossypii Coquillett.

Four new meroterpenoids, guignardones P-S (1-4), and three known analogues (5-7) were isolated from the endophytic fungal strain Guignardia mangiferae A348. Their structures were elucidated on the basis of spectroscopic analysis and single crystal X-ray diffraction. All the isolated compounds were evaluated for their inhibitory effects on SF-268, MCF-7, and NCI-H460 human cancer cell lines. Com...