Relations between soil microflora and CO2 evolution upon decomposition of cellulose
1981
Sato, K. (Tohoku Univ., Sendai (Japan). Inst. for Agricultural Research)
The investigation was carried out to study the relation between CO(,2) evolution and the changes in microflora in the case of cellulose-decomposition in soil with special attention to the heterogeneity of soil crumbs. The rates of CO(,2) evolution correlated with the number of Gram-negative bacteria, while the number of cellulose-decomposing microorganisms did not. The Gram-negative bacteria probably contribute directly to CO(,2) evolution by decomposing simple sugars produced from cellulose by cellulose-decomposing microorganisms. Both the Gram-negative bacteria and cellulose-decomposing microorganisms seemed to grow luxuriantly in the surface area of soil crumbs with added cellulose powder. Therefore it is speculated that there is a cooperation between the Gram-negative bacteria and the cellulose-decomposing microorganisms with respect to cellulose decomposition in soil. The main locus where this reaction takes place may be the surface area of soil crumbs
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