Partitioning of N in growing plants, microbial biomass and soil organic matter after amendment of N-ammonoxidized lignins

► Plants can use N from-ammonoxidized lignins for plant growth. ► Backbone of N-lignins amended to soil was not subject of major alteration during plant growth. ► NMR spectra showed quick transformation of N fixated in ammonoxidized-lignins into peptide-type N. ► Peptide N formed after release of N from N-lignins increase N-sequestration.