Gentili, Francesco
- Institutionen för skogens biomaterial och teknologi, Sveriges lantbruksuniversitet
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.
Nyckelord
actinorhiza; Alnus incana; Frankia; nitrogen; nitrogen fixation; nodulation; phosphorus; split-root
Publicerad i
Journal of Experimental Botany
2003, volym: 54, nummer: 393, sidor: 2757-2767
Utgivare: OXFORD UNIV PRESS
SLU författare
Huss-Danell, Kerstin
- Institutionen för norrländsk jordbruksvetenskap, Sveriges lantbruksuniversitet
- 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