During the summer of 2015, in an ornamental nursery of Aci San Filippo (Catania province), eastern Sicily, 10 out of 40 mature plants of dwarf banana grown in the field showed leaf chlorosis, wilt, and sudden collapse of the entire plant associated with root and basal stem rot. Two Phytophthora species (overall 24 and 22 isolates, respectively) were consistently recovered directly from rotted roots and stems. PCR amplification and sequence analysis of ITS regions of rDNA of the isolates of each species, using ITS 4 and ITS 6 primers (Cooke et al. 2000), revealed 100% similarity between our dwarf banana isolates (GenBank accession nos. KX853521 and KX853523) and several GenBank accessions of P. cryptogea and P. inundata, respectively.To our knowledge this is the first report of these two Phytophthora species on dwarf banana worldwide.

First Report of Root and Basal Stem Rot Caused by Phytophthora cryptogea and P. inundata on Dwarf Banana (Musa acuminata) in Italy

Pane A.
Writing – Review & Editing
;
Faedda R.;Granata G.;Puglisi I.;Aloi F.;La Spada F.;Evoli M.;Cacciola S. O.
2018

Abstract

During the summer of 2015, in an ornamental nursery of Aci San Filippo (Catania province), eastern Sicily, 10 out of 40 mature plants of dwarf banana grown in the field showed leaf chlorosis, wilt, and sudden collapse of the entire plant associated with root and basal stem rot. Two Phytophthora species (overall 24 and 22 isolates, respectively) were consistently recovered directly from rotted roots and stems. PCR amplification and sequence analysis of ITS regions of rDNA of the isolates of each species, using ITS 4 and ITS 6 primers (Cooke et al. 2000), revealed 100% similarity between our dwarf banana isolates (GenBank accession nos. KX853521 and KX853523) and several GenBank accessions of P. cryptogea and P. inundata, respectively.To our knowledge this is the first report of these two Phytophthora species on dwarf banana worldwide.
Phytophthora criptogea; Phytophthora inundata; Musa acuminata;
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11769/317865
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