Article Abstract:
A comparative anlysis of depolymerases produced by saprophytes and opportunists and pathogens of plants, insects and fungi was conducted to determine the adaptation of proteases and carbohydrases to different ecological niches. Results indicate that the pathogens showed enzymic adaptation to the polymers present in the integuments of their particular hosts. The plant pathogens produced high levels of polysaccharide degrading enzymes while the entomopathogens degraded a broad spectrum of proteins. However, the saprophytes and opportunistic pathogens produced the broadest spectrum of protein and polysaccharide degrading enzymes.
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Article Abstract:
The relationship of nuclear rDNA phylogeny in the fungal genus Verticillium to insect and plant virulence, carbohydrases and extracellular proteases has been investigated using sequences from the internal transcribed spacer and small nuclear rRNA regions. Eighteen isolates from Verticillium were analyzed for their abilities to infect insect larvae as well as induce necrosis in alfalfa and for their chitinolytic, pectinolytic and proteolytic activities. An analysis of phylogenetic data revealed that Verticillium is polyphyletic in origin, suggesting that it is a form genus.
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Article Abstract:
The fungus Beauveria bassiana has an inner cell wall under its conidial rodlet layer that yielded two types of proteins after extraction by formic acid. The extracted proteins were resolved to be one protein after it was oxidized and treated with SDS, and then was designated cell wall protein 1. In B. bassiana, the protein is typically found only on the conidia but not on the blastopores. Another SDS-insoluble protein, hydrophobin, is found in the outermost rodlet layer of B. bassiana conidia.
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