Rawdata(Fungal necromass fate in paddy soil depends on fertilisation)

Living microorganisms, including bacteria and fungi, contribute to the formation and accumulation of soil organic carbon (SOC) through the anabolic metabolism of organic materials, turnover, and necromass formation after death. Additionally, soil microbial growth and death maintain a dynamic balance when microbial residues are used as C sources. However, the intrinsic mechanism underlying this phenomenon is unclear, particularly in anaerobic paddy soils. Clarifying the microbiological mechanisms underlying fungal residue turnover in paddy soils is essential to reveal the direct contribution of microbial residues to SOC formation and sequestration. We sought to investigate the fungal residue C in microbial communities within microbial food web and assess the effect of fungal necromass on C accumulation and SOC stabilisation.

包括细菌与真菌在内的活体微生物，可通过有机物质的合成代谢、自身周转以及死亡后残体的形成，参与土壤有机碳（soil organic carbon, SOC）的形成与积累过程。此外，当微生物残体作为碳源时，土壤微生物的生长与死亡维持着动态平衡。然而，这一现象背后的内在机制尚不明晰，尤其是在厌氧水稻土中。阐明水稻土中真菌残体周转的微生物学机制，对于揭示微生物残体对土壤有机碳（SOC）形成与固存的直接贡献至关重要。本研究旨在探究微生物食物网内微生物群落中的真菌残体碳，并评估真菌残体对碳积累及土壤有机碳稳定化的影响。