Purification and characterization of toxins from wheat isolates of Drechslera tritici-repentis, Bipolaris bicolor, and Bipolaris sorokiniana
J. venom. anim. toxins
; 5(2): 184-99, 1999. ilus, tab, graf
Article
em En
| LILACS
| ID: lil-276616
Biblioteca responsável:
BR33.1
ABSTRACT
Low molecular weight metabolites produced by Bipolaris bicolor, Bipolaris sorokiniana, and Drechslera tritici-repentis are considered to be toxins that facilitate disease in wheat cultivars. Several such toxins were isolated from these fungi. Electrophoresis demonstrated bands of proteins that reduce shoot inhibition in susceptible plants but not in resistant plants. Chlorophyll content was reduced during the first 10 hours of light in the susceptible plants and after 18 hours in the resistant plants. The enzyme beta-1,3-glucanase increased in the resistant plants after treatment with toxins, but in the susceptible plants this enzyme decreased compared to the control. This suggests that the toxin was a protein and the susceptible plants needed other mechanisms for induce resistance.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Proteínas de Plantas
/
Toxinas Biológicas
/
Triticum
/
Micotoxinas
Idioma:
En
Revista:
J. venom. anim. toxins
Assunto da revista:
TOXICOLOGIA
Ano de publicação:
1999
Tipo de documento:
Article
País de publicação:
Brasil