In this study the production of secondary metabolites by a virulent strain of Sardiniella urbana, a recently described pathogen originally found on declining European hackberry trees in Italy, was investigated for the first time. Chemical analysis of the culture filtrate extracts led to the isolation of three well known compounds as R-(−)-mellein and (3R,4R)-and (3R,4S)-4-hydroxy melleins which were identified by spectroscopic methods (essentially NMR and ESIMS). The isolated compounds were tested for their phytotoxic, antifungal and zootoxic activities. Among them, only R-(−)-mellein was found to be active.
Secondary metabolites produced by Sardiniella urbana, a new emerging pathogen on European hackberry / Cimmino, Alessio; Maddau, Lucia; Masi, Marco; Linaldeddu, Benedetto Teodoro; Evidente, Antonio. - In: NATURAL PRODUCT RESEARCH. - ISSN 1478-6419. - 33:13(2018), pp. 1862-1869. [10.1080/14786419.2018.1477154]
Secondary metabolites produced by Sardiniella urbana, a new emerging pathogen on European hackberry
Maddau, Lucia;Linaldeddu, Benedetto Teodoro;
2018-01-01
Abstract
In this study the production of secondary metabolites by a virulent strain of Sardiniella urbana, a recently described pathogen originally found on declining European hackberry trees in Italy, was investigated for the first time. Chemical analysis of the culture filtrate extracts led to the isolation of three well known compounds as R-(−)-mellein and (3R,4R)-and (3R,4S)-4-hydroxy melleins which were identified by spectroscopic methods (essentially NMR and ESIMS). The isolated compounds were tested for their phytotoxic, antifungal and zootoxic activities. Among them, only R-(−)-mellein was found to be active.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
