Effect of biodelignification of rice straw on humification and humus quality by Phanerochaete chrysosporium and Streptomyces badius
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- 作者：HongLi Huang ; GuangMing Zeng ; Lin Tang ; HongYan Yu ; XingMei Xi ; ZhaoMeng Chen ; GuoHe Huang
- 关键词：Phanerochaete chrysosporium ; Streptomyces badius ; Lignin ; Humus
- 刊名：International Biodeterioration and Biodegradation
- 出版年：2008
- 出版时间：June 2008
- 年：2008
- 卷：61
- 期：4
- 页码：331-336
- 全文大小：165 K
文摘
The effect of biodelignification of rice straw by two different ligninolytic organisms, Phanerochaete chrysosporium (white-rot fungus) and Streptomyces badius (actinomycetes), on humus quality was investigated during a 56-day incubation at 30 °C. Lignin degradation, the release of humic extract (HE), humic acid (HA) and fulvic acid (FA), E4/E6 ratio of HA, and humification index (HI, HA/FA) were measured during the incubation. Lignin was degraded by both organisms, but to different extents. Lignin was degraded to 41 % and 31 % by P. chrysosporium and S. badius, respectively. HE released by P. chrysosporium and S. badius were, respectively, 2.10 and 2.13 times larger than that in the control at the maximum values. A significant correlation between lignin degradation and humus-related parameters involving HA fraction showed that both organisms are converting lignin to humic substances.