Claim · model-written summary
The authors attribute increased root respiration in mycorrhizal roots mainly to fungal maintenance and growth respiration.
- Taxon
- common bean
Phaseolus vulgarist0 - Outcome
- root respiratione0
- Qualifier
- increased maintenance and growth respiration of the fungal tissuee0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We propose that the increase in root respiration in mycorrhizal roots was mainly due to increased maintenance and growth respiration of the fungal tissue.”
t0“common bean”
Title
KAI L. NIELSEN; TJEERD J. BOUMA; JONATHAN P. LYNCH; et al. New Phytologist 1998. doi:10.1046/j.1469-8137.1998.00242.x
Other claims from this paper (10)
- Intervention effect Mycorrhizal infection increased root specific phosphorus absorption in low P bean plants.
- Mechanism In low P plants, a concurrent rise in root respiration consumed increased net carbon gain from phosphorus uptake.
- Observation Mycorrhizal and nonmycorrhizal roots had similar energy content.
- Intervention effect Low phosphorus plants devoted a larger share of daily carbon budget to below ground respiration than moderate phosphorus plants on days 21, 28 and 35.
- Mechanism The relatively greater below ground respiration under low phosphorus was mainly attributed to increased root to shoot ratio.
- Observation Specific assimilation rate was significantly reduced at 21 and 28 days after planting.
- Intervention effect Low phosphorus reduced specific root respiration over time by up to 40%.
- Mechanism The reduction in specific root respiration reflected reduced ion uptake respiration and growth respiration.
- Intervention effect Maintenance respiration increased in low phosphorus plants.
- Mechanism The authors conclude root carbon costs primarily limit growth in low phosphorus soil.