Claim · model-written summary
Expanding leaves sent 73-87% of exported sulphur to apical parts.
- Organ / stage
- Expanding leavese0
- Outcome
- exported (35)Se0
- Direction
- mainlye0
- Value
- 73-87%e0
- Qualifier
- apical tree partse0
PopulusNot reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Expanding leaves allocated the exported (35)S mainly into apical tree parts (73-87%)”
t0“poplar (Populus tremula P. alba)”
Title
T. Hartmann Journal of Experimental Botany 2000. doi:10.1093/jexbot/51.347.1077
Other claims from this paper (16)
- Observation Sulphate uptake did not depend on leaf development stage.
- Observation Young developing leaves did not export the absorbed sulphur.
- Association Sulphur export increased with leaf development.
- Observation Expanding leaves sent 13-27% of exported sulphur basipetally.
- Observation Lower trunk and roots were not sinks for exported sulphur.
- Observation Expanding and developing leaves were the main apical sulphur sinks, while the shoot apex was not.
- Observation Mature and old mature leaves exported 65-82% of absorbed sulphur basipetally.
- Observation Roots were the main sinks for basipetally exported sulphur from mature leaves.
- Observation Apically allocated sulphur was found in expanding and developing leaves and less in shoot apex.
- Observation Apically allocated sulphur was identified as sulphate.
- Observation ATP sulphurylase activity was not significantly lower in developing than mature leaves.
- Observation APS reductase activity was not significantly lower in developing than mature leaves.
- Observation Sulphite reductase activity was highest in developing leaves.
- Observation Serine acetyltransferase activity was highest in developing leaves.
- Observation O:-acetylserine (thiol) lyase activity was similar across leaf stages.
- Mechanism Young developing leaves apparently can produce reduced sulphur themselves.