The syrphid genus Meromacrus is widespread in the Neotropics, but its presence Chile has been confirmed just recently. Adults pollinate, and larvae are saprophagous of vegetal materials. In this note, we report cactorum Ricarte et al. for first time from Chile. New data on adult habitats flower visitation also provided Meromacrus. were observed flowers cacti Opuntia ficus-indica, Cumulopuntia s...

The phytopathogen Phytophthora parasitica, from the Oomycetes class, known to be tobacco black shank agent, can induce devastating diseases in various crop, plant and forest ecosystems. genus has been studied at cellular level, suggesting that different developmental steps are induced by expression of some specific genes. However, these studies have only carried out on certain species, such as ...

Invasive pests, such as the cactus moth, Cactoblastis cactorum (Berg) (Lepidoptera: Pyralidae), have not reached equilibrium distributions and present unique opportunities to validate models by comparing predicted distributions with eventual realized geographic ranges. A CLIMEX model was developed for C. cactorum. Model validation was attempted at the global scale by comparing worldwide distrib...

Marcus Chibucos (Virginia Bioinformatics Institute) [Phytophthora sojae and Phytophthora ramorum] Candace Collmer (Wells College) [Pseudomonas syringae] Jeremy D. Glasner (University of Wisconsin) [Erwinia crysanthemi] Michelle Gwinn Giglio (TIGRWorkshop organizer) [Prokaryote] Linda Hannick (TIGR) [Eukaryote] Rays Jiang (Virginia Bioinformatics Institute) [Phytophthora sojae and Phytophthora r...

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...

In order to investigate the oomyceteous flora associated with ornamental trees of Shiraz County (Iran), during 2017–18, rhizosphere soil and plant debris of ornamented trees from various parks and green spaces of Shiraz County (including 11 districts) were sampled. Based on morphological, morphometrical and physiological analyses, three Phytophthora species, namely, Ph. cactorum</e...