Abstract：
:Leucoagaricus gongylophorus, the fungus cultured by the leaf-cutting ant Atta sexdens, produces polysaccharidases that degrade leaf components by generating nutrients believed to be essential for ant nutrition. We evaluated pectinase, amylase, xylanase, and cellulase production by L. gongylophorus in laboratory cultures and found that polysaccharidases are produced during fungal growth on pectin, starch, cellulose, xylan, or glucose but not cellulase, whose production is inhibited during fungal growth on xylan. Pectin was the carbon source that best stimulated the production of enzymes, which showed that pectinase had the highest production activity of all of the carbon sources tested, indicating that the presence of pectin and the production of pectinase are key features for symbiotic nutrition on plant material. During growth on starch and cellulose, polysaccharidase production level was intermediate, although during growth on xylan and glucose, enzyme production was very low. We propose a possible profile of polysaccharide degradation inside the nest, where the fungus is cultured on the foliar substrate.
journal_name
Curr Microbioljournal_title
Current microbiologyauthors
Silva A,Bacci M Jr,Pagnocca FC,Bueno OC,Hebling MJdoi
10.1007/s00284-005-0431-1subject
Has Abstractpub_date
2006-07-01 00:00:00pages
68-71issue
1eissn
0343-8651issn
1432-0991journal_volume
53pub_type
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