, , and Ulvan as Biocontrol Agents of Fruit Rot Disease in Muskmelon ( L.).

The indiscriminate use of synthetic fungicides has led to negative impact to human health and to the environment. Thus, we investigated the effects of postharvest biocontrol treatment with , , and a polysaccharide ulvan on fruit rot disease, storability, and antioxidant enzyme activity in muskmelon ( L. var.

Loss of arbuscular mycorrhizal fungal diversity in trap cultures during long-term subculturing.

Long-term successional dynamics of an inoculum of arbuscular mycorrhizal fungi (AMF) associated with the maize rhizosphere (from traditionally managed agroecosystems in Los Tuxtlas, Veracruz, Mexico), was followed in Bracchiaria comata trap cultures for almost eight years. The results indicate that AMF diversity is lost following long-term subculturing of a single plant host species. Only the dominant species, Claroideoglomus etunicatum, persisted in pot cultures after 13 cycles.