Abstract
Five mycoparasitic fungi were isolated from sporangiophores of Plasmopara viticola collected from vineyards of five grape growing regions in India. Four isolates were obtained from the P. viticola growth on leaf (M1, M2, M10, and M12_1) and one from growth on berry (M12_2). Morphological observations showed that all isolates belonged to the genus Fusarium. Phylogenetic analysis of ITS and tef 1α gene identified them as F. delphinoides (M1), F. brachygibbosum (M2), F. pseudonygamai M10, M12_1 and a Fusarium sp. nov. (M12_2). In the leaf disc assay all isolates showed Fusarium species coiling around sporangiophores of P. viticola and inducing lysis. They also inhibited sporangia production. To the best of our knowledge this is the first report of Fusarium species as putative mycoparasites of P. viticola in vineyards of India.
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