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

Sammanfattning

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

Publicerad i

Journal of Experimental Botany
2003, Volym: 54, nummer: 393, sidor: 2757-2767
Utgivare: OXFORD UNIV PRESS

SLU författare

• Gentili, Francesco

  • Institutionen för skogens biomaterial och teknologi, Sveriges lantbruksuniversitet
    

• Huss-Danell, Kerstin

  • Institutionen för norrländsk jordbruksvetenskap, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Jordbruksvetenskap


Publikationens identifierare

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

Permanent länk till denna sida (URI)

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