Skip to main content
Research article - Peer-reviewed, 2021

Importance of fungi in a 63 years old long-term field experiment with 20 years of maize growth

Shahbaz, Muhammad; Thornton, Barry; Börjesson, Gunnar

Abstract

Microbial diversity and their activity in the rhizosphere and bulk soil areas were measured in a long-term field trial (started in 1956), where maize has been grown for the last 20 years with and without N fertilisation. Various microbial groups and their substrate feeding strategies (i.e. demonstrating activities) were identified through phospholipid fatty acids (PLFAs) analysis and their δ13C values. Microbial abundance (esp. fungi) remained unaffected by long-term N fertilisation. However, fungi dominated over bacteria with 2–3 times higher biomass in the rhizosphere than bulk soil. The δ13C of PLFAs showed that fungi had the highest values, particularly in fertilised rhizosphere areas, indicating that this was the most active group (than any other microbial group) for assimilation of maize rhizodeposits.

    Keywords

    C3/C4 vegetation; carbon isotopes; soil organic matter; PLFAs; soil microorganisms

    Published in

    European Journal of Soil Biology
    2021, volume: 102, article number: 103264

    Authors' information

    Shahbaz, Muhammad
    Swedish University of Agricultural Sciences, Department of Soil and Environment
    Shahbaz, Muhammad
    Lund University
    Thornton, Barry
    The James Hutton Institute
    Swedish University of Agricultural Sciences, Department of Soil and Environment

    UKÄ Subject classification

    Soil Science

    Publication Identifiers

    DOI: https://doi.org/10.1016/j.ejsobi.2020.103264

    URI (permanent link to this page)

    https://res.slu.se/id/publ/109148