Abstract

A strain of Ascochyta agropyrina var. nana, a fungal pathogen of the perennial weed Elytrigia repens, producedseveral toxins in a liquid medium, and its primary toxin, named agropyrenol, was characterized asa substituted salicylaldehyde on the basis of its chemical and spectroscopic properties. Its absolute stereochemistrywas determined by Mosher's method. Two other minor metabolites were isolated from thesame culture and named agropyrenal and agropyrenone, respectively. They were characterized as a trisubstitutednaphthalene carbaldehyde and a pentasubstituted 3H-benzofuranone, respectively, using thesame techniques. When assayed on leaves of several weed plants, i.e., Mercurialis annua, Chenopodiumalbum and Setaria viridis, agropyrenol proved to be phytotoxic, causing the appearance of necrotic lesions,agropyrenal was less active, while agropyrenone was inactive. None of the compounds showed antibiotic,fungicidal or zootoxic activity.

Autore Pugliese

• Zonno Maria , Vurro Maurizio

Tutti gli autori

• Andolfi A.; Cimmino A.; Vurro M; Berestetskiy A.; Troise C.; Zonno M. C.; Motta A.; Evidente A.

Titolo volume/Rivista

Phytochemistry

Anno di pubblicazione

2012

ISSN

0031-9422

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

Non Disponibile