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Research article2003Peer reviewedOpen access

Local and systemic effects of phosphorus and nitrogen on nodulation and nodule function in Alnus incana

Gentili F, Huss-Danell K

Abstract

Phosphorus (P) and nitrogen (N) effects on nodulation, nitrogenase activity and plant growth were studied in the root-hair-infected actinorhizal plant Alnus incana (L.) Moench. A split-root experiment, as well as a short-term experiment with entire root systems and a broader range of P concentrations, showed that P effects were specific on nodulation and not a general stimulation via a plant growth effect. These results indicate that nodule initiation and nodule growth have a high P demand. The split-root assay, comprising seven combinations of two N and two P levels, showed that P could counteract systemic N inhibition of nodulation, but did not counteract N inhibition of nitrogenase activity

Published in

Journal of Experimental Botany
2003, Volume: 54, number: 393, pages: 2757-2767
Publisher: OXFORD UNIV PRESS

      SLU Authors

      • Huss-Danell, Kerstin

        • Department of Agricultural Research for Northern Sweden, Swedish University of Agricultural Sciences

      UKÄ Subject classification

      Agricultural Science

      Publication identifier

      DOI: https://doi.org/10.1093/jxb/erg311

      Permanent link to this page (URI)

      https://res.slu.se/id/publ/982