|Table of Contents|

Isolation,Screening and Capability of Cellulose-Degrading Strains for Rice Straw(PDF)

南京师范大学学报(工程技术版)[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2011年01期
Page:
73-79
Research Field:
Publishing date:

Info

Title:
Isolation,Screening and Capability of Cellulose-Degrading Strains for Rice Straw
Author(s):
Gu TingShen WeishouZhong Wenhui
Department of Environmental Science and Engineering,Nanjing Normal University,Nanjing 210046,China
Keywords:
CMC enzyme activityrice strawred soilstraw decaycellulose
PACS:
S141.4;S182
DOI:
-
Abstract:
Three high-efficient cellulose-degrading strains were isolated and screened from the red soil of paddy field with the ultraviolet-induced mutation,including one bacterial strain named as YB20 and two fungal strains F9 and YF15. The strain of YB20 was characterized as a Bacillus subtilis sp,the strain F9 and YF15 were both characterized as Trichoderma viride sp. The optimum conditions for cellulase production by three strains were investigated,in which the highest carboxylmethyl cellulose ( CMC) enzyme activities of the strain YB20,the strain F9 and YF15 were 2. 67,2. 78 and 3. 56 ( mg /mL) ·30 min,respectively. The stability of CMC enzyme activities of three strains remained at a high level. There was obviously synergistic effect for straw decay,approximately 35. 02% when three strains mixed together in the incubated experiment,with 5. 43 times higher than the control. The application of cellulose-degrading microbial agents to the red soil of paddy field could to some extent improve rice yield compared with the control in a field plot experiment.

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Last Update: 2013-03-21