Claim · model-written summary
Nitrate flux to the leaves from the roots plays a much larger regulatory role than leaf nitrate content in controlling NRA in intact maize plants.
- Treatment
- nitrate flux to the leaves from the rootse3
- Outcome
- level of NRAe3
- Qualifier
- plays a much larger regulatory role than the leaf nitrate contente3
Zea maysNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“were investigated in 8- to 14-day old maize (Zea mays L.) plants”
e3“These experiments show that the nitrate flux to the leaves from the roots plays a much larger regulatory role than the leaf nitrate content in controlling the level of NRA in intact plants”
Title
Nitrate Reductase Activity in Maize (Zea mays L.) Leaves
Dale L. Shaner; John S. Boyer PLANT PHYSIOLOGY 1976. doi:10.1104/pp.58.4.499
Other claims from this paper (10)
- Intervention effect Nitrate deprivation decreased nitrate reductase activity (NRA) in maize seedlings.
- Intervention effect Nitrate deprivation decreased the nitrate flux and leaf nitrate content.
- Intervention effect Resupplying nitrate to the roots increased all three parameters: NRA, nitrate flux and leaf nitrate content.
- Intervention effect Root cooling decreased nitrate flux.
- Association Plants with a lower nitrate flux lost NRA rapidly, while leaf nitrate content was initially unaffected.
- Intervention effect When roots remained cool long enough, leaf nitrate content eventually decreased.
- Intervention effect Rewarming the roots restored nitrate flux, leaf nitrate content and NRA to control levels.
- Intervention effect Decreasing nitrate flux to the leaves rapidly decreased NRA.
- Intervention effect Decreasing nitrate flux to the leaves left leaf nitrate contents unchanged.
- Intervention effect Varying transpiration rates did not alter nitrate flux.