PDF(Pubmed)
Abstract：
Vermiculite is a clay mineral with unique physical properties that plays a significant role in plant cultivation, soil remediation, and solid waste management. In this research, we first explored how vermiculite-to-microbe interactions evolved during sludge-waste mushroom residue co-composting. Vermiculite\'s addition had a substantial impact on the microbial α and β diversities, significantly changed the microbial community pattern, and strengthened the composting nutrient circulation through the formation of more specialist and generalist species. The microbial community characteristics exhibited common co-networks for resisting composting environment stresses. Vermiculite contributed to enhancing the keystone taxa Proteobacteria and Actinobacteriota and caused the ecological function network to diversify in the warming and maturation phases, with more complexity and tightness in the thermophilic phase (with super-generalist species existing). The enhanced microbial interactions induced by vermiculite possessed a greater capacity to facilitate the metabolisms of carbohydrates and amino acids and cellulolysis, thereby promoting composting humification, and nitrogen retention in the final compost and composting maturity. These findings are helpful for us to understand the biological process mechanisms of the effect of vermiculite additives on composting and contribute to the establishment of a theoretical framework for enhancing the microbial interactions in composting systems by adding vermiculite in practical applications.
摘要：
蛭石是一种黏土矿物，具有独特的物理性质，在植物栽培中起着重要作用，土壤修复,和固体废物管理。在这项研究中,我们首先探讨了在污泥-废蘑菇渣共堆肥过程中，蛭石与微生物的相互作用是如何演变的。蛭石的添加对微生物的α和β多样性有很大的影响，显著改变了微生物群落模式，并通过形成更多的专家和通才物种来加强堆肥养分循环。微生物群落特征表现出抵抗堆肥环境胁迫的共同网络。蛭石有助于增强梯形分类群变形杆菌和放线菌，并导致生态功能网络在变暖和成熟阶段多样化，在嗜热阶段具有更多的复杂性和紧密度（存在超级通才物种）。蛭石诱导的增强的微生物相互作用具有更大的促进碳水化合物和氨基酸代谢和纤维素分解的能力，从而促进堆肥腐化，以及最终堆肥和堆肥成熟度中的氮保留。这些发现有助于我们了解蛭石添加剂对堆肥作用的生物学过程机理，并有助于建立在实际应用中通过添加蛭石增强堆肥系统中微生物相互作用的理论框架。
