Ramstedt, Mauritz
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences
Research article2015Peer reviewed
Decline of jackfruit (Artocarpus heterophyllus) incited by Phytophthora palmivora in Vietnam
Tri, Mai Van; Nguyen, Van Hoa; Nguyen, Minh Chau; Pane, Antonella; Faedda, Roberto; De Patrizio, Alessandro; Schena, Leonardo; Olsson, Christer H.B.; Wright, Sandra A I; Ramstedt, Mauritz; Cacciola, Santa Olga
Abstract
A new disease of jackfruit (Artocarpus heterophyllus Lam.) was observed in the south-eastern region of South Vietnam. Symptoms included root rot, cankers and gummosis of trunks, chlorosis, wilt, blight of leaves, defoliation, fruit brown rot, and tree death. The disease was found in 10% of surveyed farms with an incidence varying from 2% to nearly 60% of the trees. A Phytophthora species, identified as P. palmivora (Butler) Butler, using the ITS1-5.8S-ITS2 region of the rDNA as a barcode gene and morphological and cultural features, was consistently isolated from symptomatic roots, fruits, trunk cankers and leaves. Koch's postulates were fulfilled using pathogenicity tests on seedlings, leaves and detached fruits of jackfruit. To our knowledge, this is the first report of P. palmivora on jackfruit in Vietnam.
Keywords
Oomycetes; South Vietnam; ITS regions; A1 mating type; Koch's postulates
Published in
Phytopathologia Mediterranea
2015, volume: 54, number: 2, pages: 275-280
Publisher: MEDITERRANEAN PHYTOPATHOLOGICAL UNION
SLU Authors
UKÄ Subject classification
Agricultural Science
Permanent link to this page (URI)
https://res.slu.se/id/publ/76172