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Glutathione dependent enzymes and antioxidant defences in truffles: organisms living in microaerobic environments

Published online by Cambridge University Press:  01 December 1999

F. AMICARELLI ,
A. BONFIGLI ,
S. COLAFARINA ,
A. M. CIMINI ,
B. PRUITI ,
P. CESARE ,
M. P. CERÚ ,
C. DI ILIO ,
G. PACIONI  and
M. MIRANDA
F. AMICARELLI
Affiliation:
Departments of Basic and Applied Biology and Environmental Sciences, University of L'Aquila, I-67010 Coppito, L'Aquila, Italy
A. BONFIGLI
Affiliation:
Departments of Basic and Applied Biology and Environmental Sciences, University of L'Aquila, I-67010 Coppito, L'Aquila, Italy
S. COLAFARINA
Affiliation:
Departments of Basic and Applied Biology and Environmental Sciences, University of L'Aquila, I-67010 Coppito, L'Aquila, Italy
A. M. CIMINI
Affiliation:
Departments of Basic and Applied Biology and Environmental Sciences, University of L'Aquila, I-67010 Coppito, L'Aquila, Italy
B. PRUITI
Affiliation:
Departments of Basic and Applied Biology and Environmental Sciences, University of L'Aquila, I-67010 Coppito, L'Aquila, Italy
P. CESARE
Affiliation:
Departments of Basic and Applied Biology and Environmental Sciences, University of L'Aquila, I-67010 Coppito, L'Aquila, Italy
M. P. CERÚ
Affiliation:
Departments of Basic and Applied Biology and Environmental Sciences, University of L'Aquila, I-67010 Coppito, L'Aquila, Italy
C. DI ILIO
Affiliation:
Department of Biomedical Sciences, Faculty of Medicine, University ‘G. D'Annunzio’, I-66100 Chieti, Italy
G. PACIONI
Affiliation:
Departments of Basic and Applied Biology and Environmental Sciences, University of L'Aquila, I-67010 Coppito, L'Aquila, Italy
M. MIRANDA
Affiliation:
Departments of Basic and Applied Biology and Environmental Sciences, University of L'Aquila, I-67010 Coppito, L'Aquila, Italy
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Abstract

Truffles live in an environment poor in oxygen, and are a good model for investigation of enzymatic adaptation to microaerobic conditions. We studied the antioxidant and glutathione dependent enzymatic endowment of Tuber truffles. Superoxide dismutase, catalase, glutathione peroxidase Se dependent, glutathione reductase, glyoxalase 1 and glyoxalase 2 are expressed and correlate with the microaerobic metabolism, growth rate and mycorrhizal symbiosis of truffles. A very low or undetectable glutathione S-transferase activity was found. For comparison the same enzyme activities were investigated in Agaricus bisporus which is epigeous and non-mycorrhizal.

Type
Research Article
Information
Mycological Research , Volume 103 , Issue 12 , December 1999 , pp. 1643 - 1648
Copyright
© The British Mycological Society 1999

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