Sari Mohali
PhD (Pretoria University) on the taxonomy and ecology of Botryosphaeriacea on Pinus, Eucalyptus and Acacia. Currently - Professor at the Centre of Forestry and Environmental Studies Graduate. Coordinator of the PhD in Forestry and Environmental Sciences. Andes University. Merida. Venezuela. Main research themes: Taxonomy, Ecology and Phylogenetic Fungi on plantations and Natural Forest as well as others woody species. Report and Describe of new taxa.
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fruit-bearing plant species. Two strains of Glomerella cingulata, teleomorph of Colletotrichum gloeosporioides, were identified as the cause of anthracnose on fruit of P. edulis, grown in the region located at the south of Maracaibo lake. These strains were recognized as perithecial type strain (PTS) and asexual (conidial) chromogenic type strain (ACTS). On oatmeal-agar (OMA), potato-dextrose-agar (PDA) and V-8, PTS usually produced perithecia, but on PDA it also formed scarce acervuli. On the same culture media, ACTS only developed conidia inmersed in pink or orange-colored masses, however, on PDA the conidial masses were scarce. PTS ascospores measured 14-20 x 5-6 m and ACTS conidia 14-19 x 4-4.5 m. Pathogenicity tests using mycelium-agar plugs and suspension of ascospores and conidia, proved that both strains infected lesioned and unlesioned fruits, but lesions caused by PTS grew faster than those induced by ACTS. On inoculated fruits, anthracnose symptoms initially appeared as light-brown spots that later became necrotic due to acervuli emergence and mycelial growth emerging from these structures. On experimentally infected fruits, PTS and ACTS only produced dark-colored, subepidermic and setous acervuli in which chromogenic masses were not appreciated, probably due to the scarce conidia formation. Ocasionally some setae were seen producing conidia.
melina) y sulfato de cobre al 9 % (1,9 kg/m3 en pino caribe y 1,2 kg/m3 en melina), fue suficiente para reducir la acción de los microorganismos degradadores de la madera presentes en suelo no estéril. La madera de pino caribe permitió mayor penetración y retención que la madera de melina.
fruit-bearing plant species. Two strains of Glomerella cingulata, teleomorph of Colletotrichum gloeosporioides, were identified as the cause of anthracnose on fruit of P. edulis, grown in the region located at the south of Maracaibo lake. These strains were recognized as perithecial type strain (PTS) and asexual (conidial) chromogenic type strain (ACTS). On oatmeal-agar (OMA), potato-dextrose-agar (PDA) and V-8, PTS usually produced perithecia, but on PDA it also formed scarce acervuli. On the same culture media, ACTS only developed conidia inmersed in pink or orange-colored masses, however, on PDA the conidial masses were scarce. PTS ascospores measured 14-20 x 5-6 m and ACTS conidia 14-19 x 4-4.5 m. Pathogenicity tests using mycelium-agar plugs and suspension of ascospores and conidia, proved that both strains infected lesioned and unlesioned fruits, but lesions caused by PTS grew faster than those induced by ACTS. On inoculated fruits, anthracnose symptoms initially appeared as light-brown spots that later became necrotic due to acervuli emergence and mycelial growth emerging from these structures. On experimentally infected fruits, PTS and ACTS only produced dark-colored, subepidermic and setous acervuli in which chromogenic masses were not appreciated, probably due to the scarce conidia formation. Ocasionally some setae were seen producing conidia.
melina) y sulfato de cobre al 9 % (1,9 kg/m3 en pino caribe y 1,2 kg/m3 en melina), fue suficiente para reducir la acción de los microorganismos degradadores de la madera presentes en suelo no estéril. La madera de pino caribe permitió mayor penetración y retención que la madera de melina.