Structure of the host-specific toxins produced by the fungal pathogen Periconia circinata.
Proc Natl Acad Sci U S A
; 89(20): 9574-8, 1992 Oct 15.
Article
em En
| MEDLINE
| ID: mdl-1409667
ABSTRACT
Four metabolites named peritoxins A and B and periconins A and B have been isolated together with the known metabolite circinatin from culture filtrates of the fungal pathogen Periconia circinata. Peritoxins A and B, which correspond to the P. circinata toxins Ia and IIa partially characterized in previous work, are selectively toxic to genotypes of Sorghum bicolor susceptible to the pathogen, whereas periconins A and B are biologically inactive. Combination of instrumental analysis and chemical degradation has led to structural assignments for each of the four compounds; only the configuration at some of the chiral centers remains undefined. Structural comparison suggests a precursor role for circinatin in the formation of the peritoxins and the periconins.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Doenças das Plantas
/
Fungos
/
Micotoxinas
Idioma:
En
Revista:
Proc Natl Acad Sci U S A
Ano de publicação:
1992
Tipo de documento:
Article