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| Construction of a Microbial Consortium for Lignin Degradation and Its Effect on Composting of Eucalyptus-bark |
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| KeyWord:eucalyptus-bark; microbial consortium; lignin; degradation |
| Author Name | Affiliation | | HE Hui-zhong | College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China | | SUN Ying-bo | Environmental Horticulture Research Institute of Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China | | LIU Ke-xing | College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China | | GUO Xiao-xue | College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China | | HUANG Li-li | Environmental Horticulture Research Institute of Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China |
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| Abstract: |
| Eucalyptus is one of the world′s three fast-growing tree species, producing a great deal of bark waste after timber is used. Therefore, developing a microbial consortium degrading lignin in eucalyptus-bark under natural environmental conditions is a key to the utilization of eucalyptus-bark. In this study, microorganisms capable of degrading lignin were selected by plate culture experiments. Antagonistic experiments were employed to select nutritional strains that had little antagonistic effects on the lignin-degrading microorganisms. A microbial consortium containing three species（Trichoderma viride, Phanerochaete chrysosporium, and Pleurotus ostreatus） able to degrade eucalyptus-bark lignin and seven nutritional strains was thus constructed. During composting of eucalyptus-bark, the microbial consortium significantly decreased cellulose content by 77.67% and lignin by 78.78% as compared to the control. This result would shed light on application of eucalyptus bark in agricultural and forestry cultivation. |
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