Microbial processes mediating Priming Effects and the coupling of C and N cycling in soil

Soil is fundamental to agricultural productivity and sustainability. Soil organic matter (SOM) is important as a revolving nutrient fund, which determines plant nutrient availability. Microbes are key determinants of SOM turnover and of SOM dynamics. Their activities are influenced by organic inputs from plants (Priming Effects). Understanding these interactions has the potential to reduce external N input by better predicting the soil N supply. However, which microbes are involved in primed SOM mineralization is unknown.

土壤是农业生产力与可持续发展的核心根基。土壤有机质（Soil Organic Matter, SOM）作为循环养分库发挥着关键作用，其直接决定了植物可利用的养分有效性。微生物是调控土壤有机质周转与动态变化的核心因子，植物源有机输入物会影响其活性，这一过程即激发效应（Priming Effects）。明晰这些相互作用，有望通过精准预测土壤氮素供给量，从而减少外源氮输入。然而，目前仍不清楚哪些微生物参与了经激发效应驱动的土壤有机质矿化过程。