The topic of the degradative ability of blue-stain fungi literature is not clear. Many authors support the idea that those fungi don't have enzymatic capability to decay the wall of the ligneous cells. However, others have found some decay activity. In this study, we have attempted to analyze which wall cells soluble carbohydrates are metabolized by some blue-stain fungi, found in Spain. The tested fungi have been: Pullularia pullulans and Sclerophoma pityophila (wind-dispersed), and Ceratocystis huntii and Ceratocystis ips (bark beetles transmitted). This study has been realized through the determination of: the growing rate, the amount of biomass produced by these fungi and the chemical analysis of the culture media, with six different carbohydrates (glucose, mannose, rhamnose, arabinose, galactose and xylose).

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