Wu Xiaoyan, Amanze Charles, Yu Zhaojing, Li Jiaokun, Liu Yuandong, Shen Li, Yu Runlan, Wu Xueling, Xu Xuewen, Tan Shiyong, Zeng Weimin
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China.
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biometallurgy, Ministry of Education, Changsha 410083, China.
Bioresour Technol. 2022 Nov;363:127923. doi: 10.1016/j.biortech.2022.127923. Epub 2022 Sep 10.
The objective of this work was to evaluate the fungal community assembly and function during food waste composting with Aneurinibacillus sp. LD3 (LD3) inoculant. Inoculation reduced the content of total organic carbon, moisture content, nitrate nitrogen, and nitrite nitrogen. The LD3 inoculant was able to drive the changes in the assembly of the fungal community. In particular, inoculation with LD3 not only increased the relative abundance of Ascomycota and Trichocomaceae_unclassified for lignocellulose degradation at the mesophilic and cooling stages but also reduced the relative abundances of the opportunistic human pathogen Candida. Saprotroph was the predominant fungal trophic mode in composting, and inoculation with LD3 has a better inactivation effect on animal and plant pathogenic fungi during composting. Furthermore, the variation of the fungal community after inoculation with LD3 was the largest explained by temperature (30.64%). These results implied that LD3 significantly regulated fungal composition and function of food waste composting.
这项工作的目的是评估在使用芽孢杆菌属LD3（LD3）接种剂进行厨余堆肥过程中真菌群落的组装和功能。接种降低了总有机碳含量、水分含量、硝态氮和亚硝态氮含量。LD3接种剂能够推动真菌群落组装的变化。特别是，接种LD3不仅在嗜温阶段和冷却阶段增加了用于木质纤维素降解的子囊菌门和未分类的曲霉科的相对丰度，还降低了机会性人类病原体念珠菌的相对丰度。腐生菌是堆肥中主要的真菌营养模式，接种LD3在堆肥过程中对动植物病原真菌具有更好的灭活效果。此外，接种LD3后真菌群落的变化最大可由温度解释（30.64%）。这些结果表明，LD3显著调节了厨余堆肥的真菌组成和功能。
