Comparative physiological studies of Scopulariopsis breviaulis and Stemphylium piriforme
1999
Elwy, E. | Elwy, A. | Geweely, N. (Cairo Univ., Giza (Egypt). Faculty of Science)
Response of Scopulariopsis brevicaulis (alkalotolerant) and Stemphylium piriforme (alkalosensitive) towards pH range between 6.5 to 11.5 were investigated. Sugar uptake was maximum at pH 9.5 and 7.5 for S. brevicaulis and S. piriforme respectively. Amino-n content showed significant decrease in the case of S. piriforme with the increase in pH value, while differences were not significant in the case of S. brevicaulis. Polysaccharide content of S. brevicaulis significantly decreased with the increase in pH value, while that of S. piriforme was insignificantly affected. Considering nitrogenous contents, there was a clear relation in the case of S. brevicaulis, as the total insoluble nitrogen increased by the rise in pH value, total soluble nitrogen decreased. On the other hand, significant decrease of both components of both components was observed in the case of S. piriforme.
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