Identification of phytoplasmas associated with grapevine ‘bois noir’ and flavescence dorée in inter-row groundcover vegetation used for green manure in Franciacorta vineyards
Articolo
Data di Pubblicazione:
2023
Citazione:
Identification of phytoplasmas associated with grapevine ‘bois noir’ and flavescence dorée in inter-row groundcover vegetation used for green manure in Franciacorta vineyards / A. Moussa, E. Guerrieri, S. Torcoli, F. Serina, F. Quaglino, N. Mori. - In: JOURNAL OF PLANT PATHOLOGY. - ISSN 2239-7264. - 105:4(2023), pp. 1511-1519. [10.1007/s42161-023-01474-2]
Abstract:
‘Bois noir’ (BN) and flavescence dorèe (FD), the two main diseases of the grapevine yellows complex associated with
genetically distinct phytoplasmas, have a complex epidemiology including multiple insect vectors and reservoir plants.
This study investigated the presence of BN and FD phytoplasmas in nine groundcover plant species commonly utilized
for inter-row vineyard green manure in Franciacorta (North Italy). The activities conducted in 2020 included monitoring
and sampling groundcover plant species and symptomatic grapevines in September, and phytoplasma identification and
typing by amplification and sequence analyses of stamp and map genes. Molecular analyses identified BN phytoplasma
(strains carrying the stamp gene sequence variants St5, St19, St30) and FD phytoplasma (strains carrying the map gene
sequence variant M54) in 72% and 28% of symptomatic grapevines, respectively. BN phytoplasma strains St5 and St30
were found also in Eruca sativa, Vicia sativa, and Polygonum fagopyrum. FD phytoplasma strain M54 was found also
in Vicia faba, Trifolium incarnatum, and Polygonum fagopyrum. These results reinforced the evidence of the increasing
range of BN and FD phytoplasma alternative plant hosts and suggested a criterium for the selection of the groundcover
plant species utilized for green manure, excluding the ones putatively involved in BN and FD diffusion.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
16SrV phytoplasmas; Map; Stamp; Viticulture; Weeds; ‘Candidatus Phytoplasma solani’
Elenco autori:
A. Moussa, E. Guerrieri, S. Torcoli, F. Serina, F. Quaglino, N. Mori
Link alla scheda completa: