Claim · model-written summary
Pioneer species had high nitrate reductase levels and chiefly assimilated nitrate in leaves.
- Taxon
- pioner speciese0
- Gene
- nitrate reductasee0
- Outcome
- high levels of nitrate reductase (EC 1.6.6.1) and were predominantly leaf nitrate assimilatorse0
- Direction
- highe0
Not reportedMaterialCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingValueQualifier
Verbatim
e0“pioner species had high levels of nitrate reductase (EC 1.6.6.1) and were predominantly leaf nitrate assimilators”
Title
Inorganic nitrogen assimilation in plants of Austrlian rainforest communities
G. R. Stewart; E. E. Hegarty; R. L. Specht Physiologia Plantarum 1988. doi:10.1111/j.1399-3054.1988.tb04936.x
Other claims from this paper (11)
- Observation Understorey and overstorey species had low shoot and root nitrate reductase activity.
- Observation Many understorey and overstorey species had little nitrate reduction capacity even with nitrate freely available.
- Observation Closed forest species had lower nitrate reductase levels than gap and forest margin species.
- Observation Closed forest species had similar total nitrogen content to gap and forest margin species.
- Mechanism The authors suggest closed forest species use nitrogen sources other than nitrate ions.
- Observation Glutamine synthetase was present in leaves of every examined species.
- Observation The chloroplastic glutamine synthetase isoform predominated in pioneer leaves.
- Observation The cytosolic isoform represented at least 40% of total leaf activity in most closed forest species.
- Association Low chloroplastic glutamine synthetase levels correlated with low leaf nitrate reduction capacity.
- Association Low chloroplastic glutamine synthetase and nitrate reduction capacity characterized species regenerating in shade.
- Mechanism The authors infer cytosolic glutamine synthetase reassimilates photorespiratory ammonia in some woody plants.