Banana residues are an important energy resource after fruit harvesting. The optionally dumping and burning causes severely environmental problems. Traditional compost efficiency was limited by lignocellulosic composition of banana residues. Inoculation with cellulase-producing microbes provides an efficient strategy for improving degradation of lignocellulosic materials. In our study, a newly isolated cellulolytic bacterium Acetobacter orientalis XJC-C with a salt and high temperature resistance was identified from a marine soft coral. By contrast, the strain can biodegrade different lignocellulosic agricultural residues, especially banana straw. The highest cellulolytic and ligninolytic enzyme activities were detected during composting at 40 days. Compared with the negative and positive control groups, the lignin degradation rate reached 76.24% in the A. orientalis XJC-C group, increased by 47.08% and 21.85%, respectively. Moreover, the strain improved significantly the metabolic activity and functional diversity of bacterial community. Hence, A. orientalis XJC-C will be a promising candidate for degrading lignocellulosic agricultural residues.

香蕉残留是水果收获后的重要能源。可选的倾倒和燃烧会导致严重的环境问题。传统堆肥效率受到香蕉残渣木质纤维素成分的限制。用产生纤维素酶的微生物接种提供了改善木质纤维素材料降解的有效策略。在我们的研究中，新分离的纤维素分解细菌东方醋杆菌从海洋软珊瑚中鉴定出具有耐盐和耐高温性能的XJC-C。相比之下，该菌株可以生物降解不同的木质纤维素农业残留物，尤其是香蕉秸秆。在堆肥40天时检测到最高的纤维素分解酶和木质素分解酶活性。与阴性和阳性对照组相比，木质素降解速率在达到76.24％A.侧柏XJC-C组，分别增加了47.08％和21.85％。此外，该菌株显着改善了细菌群落的代谢活性和功能多样性。因此，A.侧柏XJC-C将成为降解木质纤维素农业残留物有希望的候选。