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Possible role of chitosan in the interaction between barley and Erysiphe graminis after tetraconazole treatment

Published online by Cambridge University Press:  01 May 1998

D. MAFFI ,
M. BASSI ,
A. BRAMBILLA  and
C. G. CONTI
D. MAFFI
Affiliation:
CNR-Centro di Studio per il miglioramento Sanitario delle Colture Agrarie, c/o Istituto di Patologia Vegetale, Università di Milano, Italy
M. BASSI
Affiliation:
Dipartimento di Biologia Evolutiva e Funzionale, Università di Parma, Italy
A. BRAMBILLA
Affiliation:
CNR-Centro di Studio per il miglioramento Sanitario delle Colture Agrarie, c/o Istituto di Patologia Vegetale, Università di Milano, Italy
C. G. CONTI
Affiliation:
CNR-Centro di Studio per il miglioramento Sanitario delle Colture Agrarie, c/o Istituto di Patologia Vegetale, Università di Milano, Italy
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Abstract

Barley plants experimentally infected with Erysiphe graminis f. sp. hordei were subjected to a curative treatment with tetraconazole (TC), to find out if the thickenings induced by the treatment in the fungal and host cell walls might be related to an increased production of chitosan. The presence of chitosan was assessed by colorimetric method, histological staining and ultrastructural localization with chitosanase bound to colloidal gold. The results showed that after TC treatment the amount of chitosan increase in the cell walls of hyphae and haustoria, and also in the haustorial encasements.

Type
Research Article
Information
Mycological Research , Volume 102 , Issue 5 , May 1998 , pp. 599 - 606
Copyright
The British Mycological Society 1998

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