Claim · model-written summary
The EcM root tip to foliage biomass ratio of Scots pine decreased with temperature sum.
- Taxon
- Scots pine
Pinus sylvestrise2 - Outcome
- EcM root tip:foliage biomass ratioe1
- Direction
- decreaseinferrede2
- Setting
- temperature sume2
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The EcM root tip:foliage biomass ratio of Norway spruce was positively related to the C:N ratio in the organic layer”
e2“whereas that of Scots pine was negatively related to the temperature sum”
Title
H.-S. Helmisaari; I. Ostonen; K. Lohmus; et al. Tree Physiology 2009. doi:10.1093/treephys/tpn042
Other claims from this paper (10)
- Observation Ectomycorrhizal root tip frequency and mass did not differ significantly between tree species or between northern and southern sites.
- Observation Norway spruce EcM root tip number per unit area varied between 0.8 and 2.4 million per m2.
- Observation Scots pine EcM root tip number per unit area varied between 0.7 and 2.9 million per m2.
- Association Scots pine EcM root tip number per unit area was higher in northern than in southern stands.
- Observation Over 80% of EcM root tips of both species were in the organic layer and the upper 0-10 cm mineral soil layer.
- Association Scots pine had more EcM root tips per foliage mass in northern than in southern Finland.
- Association Scots pine had more EcM root tips per foliage mass than Norway spruce in the same climatic region.
- Association The EcM root tip to foliage biomass ratio of Norway spruce increased with the organic-layer C:N ratio.
- Observation The number of EcM root tips per milligram of fine root biomass was constant.
- Intervention effect Both tree species maintained more EcM tips per foliage unit under nitrogen deficiency.