Published in Scientific Papers. Series B, Horticulture, Vol. LXV, Issue 2
Written by Alexandra Maria MARIN, Ana Cornelia BUTCARU, Beatrice Michaela IACOMI
Little is known about the fungal communities of rose leaves, the interactions between and with the main pathogens or their response to abiotic and biotic stress. In this context, a preliminary study on microbiota of healthy and infected leaves by Diplocarpon rosae and Podosphaera pannosa was carried out in the organic edible climbing rose plantation of Faculty of Horticulture - USAMV Bucharest. The composition and incidence of fungal isolates was variable in time as well as in presence or absence of pathogens. The fungal community of rose leaves was represented by Alternaria, Aureobasidium, Cladosporium, Chaetomium, Epicoccum, Fusarium, Penicillium and Sordaria isolates. Our study highlights the presence of some well knowns natural antagonists as Chaetomium globosum, Epicoccum nigrum, Sordaria fimicola and Aureobasidium pullulans isolates. Further, presently ongoing studies shall reveal the antagonistic properties of our isolates and their colonizing ability (in vitro and in vivo assays). Our further studies will contribute to a better understanding of the composition and diversity of rose leaves fungal community and how the microbiota can play a role in plant protection.
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