Claim · model-written summary
The authors suggest that Pi absorbed by root cells is concentrated during transport from the root to the leaf apoplast.
- Taxon
- barley
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Hordeum vulgaret0 - Organ / stage
- root cellse0
- Outcome
- concentrated in the transport processe0
- Qualifier
- transport process from the root to the leaf apoplaste0
Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
t0“barley leaves”
e0“the P i absorbed by root cells is concentrated in the transport process from the root to the leaf apoplast”
Title
T. MIMURA; K. SAKANO; T. SHIMMEN Plant Cell & Environment 1996. doi:10.1111/j.1365-3040.1996.tb00253.x
Other claims from this paper (10)
- Observation Under Pi deficiency, growth-dependent changes in Pi concentrations of whole barley leaves established that Pi was re-translocated from older to young leaves.
- Observation Translocation of 32Pi in barley plantlets was confirmed with an imaging plate system.
- Observation Under Pi deficiency, the cytoplasmic Pi concentration of the first leaf remained constant until 16 d after sowing.
- Observation Vacuolar Pi was completely exhausted after 8 to 10 d of Pi deficiency.
- Association Exhaustion of vacuolar Pi in the first leaf coincided with the appearance of the second leaf.
- Observation The Pi concentration in the apoplast changed similarly to that of the whole leaf.
- Association Apoplastic Pi concentration was affected to some extent by the vacuolar Pi concentration and the growth of the younger leaf.
- Observation The Pi concentration in the apoplast was about 0.1 to 1 mol m-3 even without Pi supply, much higher than in the usual soil environment.
- Observation The Pi content of the xylem exudate was constant irrespective of growth culture conditions.
- Mechanism The authors propose that the root may function as the constant Pi supplier to the above-ground tissues.