Claim · model-written summary
During a second phase of stress development growth slowed more in shoots than in roots of barley and tomato.
- Taxon
- Barley and tomato plants
Solanum lycopersicum.jpg?width=60)
Hordeum vulgaree1 - Organ / stage
- shootse2
- Treatment
- stress developmente2
- Outcome
- Growthe2
- Direction
- slowed moree2
- Comparator
- rootse2
Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
e1“Barley and tomato plants”
e2“Growth slowed more in shoots than in roots during a second phase of stress development”
Title
DAVID T. CLARKSON; CHARLOTTE B. SCATTERGOOD Journal of Experimental Botany 1982. doi:10.1093/jxb/33.5.865
Other claims from this paper (12)
- Intervention effect After the phosphate supply to barley and tomato plants was discontinued, growth rates were at first unchanged.
- Intervention effect After the phosphate supply was discontinued, the internal phosphorus concentration of barley and tomato plants decreased.
- Intervention effect In the first phase of phosphate stress the rate of phosphate transport by the roots of barley and tomato sometimes increased significantly.
- Observation Visual symptoms of deficiency appeared in tomato during the second phase of phosphate stress.
- Observation Visual symptoms of deficiency did not appear in barley during the second phase of phosphate stress.
- Observation During the second phase of phosphate stress, enhancement of phosphate uptake capacity reached a maximum in both barley and tomato.
- Observation The subsequent decline in phosphate uptake capacity was associated with visible deficiency symptoms developing in barley and intensifying in tomato.
- Observation When stressed plants were returned to a phosphate solution, rapid absorption continued for several days after the internal phosphorus concentration had returned to the level of the controls.
- Mechanism Phosphate toxicity may have been the cause of leaf lesions and necrosis during the recovery phase.
- Intervention effect Stomatal conductance in tomato was decreased at an early stage of phosphate stress development.
- Intervention effect Foliar-applied phosphate was absorbed more rapidly by P-stressed barley leaves than by their controls.
- Intervention effect Much larger amounts of foliar-applied phosphate were translocated from the leaves to the roots in P-stressed barley than in their controls.