Claim · model-written summary
The ABA increase in the growth zone was apparently independent of hydrolysis of its conjugated form.
Zea maysNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under water stress conditions, induced by mannitol solutions (0 to 0.66 M ) applied to the apical 12 mm of intact roots of Zea mays L. (cv. LG 11), a growth inhibition, a decrease in the osmotic potential of the cell sap and a significant accumulation of abscisic acid (ABA) were observed”
e4“The greatest increase in ABA (about 10 fold) was obtained in the growth zone”
e5“this increase was apparently independent of the hydrolysis of the conjugated form”
Title
Effects of water stress on growth, osmotic potential and abscisic acid content of maize roots
Jean‐Marcel Ribaut; Paul‐Emile Pilet Physiologia Plantarum 1991. doi:10.1111/j.1399-3054.1991.tb02123.x
Other claims from this paper (9)
- Intervention effect Mannitol-induced water stress inhibited growth of maize root apices.
- Intervention effect Mannitol-induced water stress decreased the osmotic potential of maize root cell sap.
- Intervention effect Mannitol-induced water stress significantly increased abscisic acid accumulation in maize roots.
- Intervention effect Growth rate of maize roots increased again after stressed roots were placed in a humid atmosphere, even though elongation had been totally inhibited.
- Intervention effect Under stress equivalent to an osmotic potential of ‐1.09 MPa, growth of maize roots was totally inhibited.
- Mechanism Root cell turgor pressure was reduced to the yield threshold under the stress that totally inhibited growth.
- Intervention effect The greatest increase in ABA (about 10 fold) in maize roots occurred in the growth zone under water stress.
- Intervention effect A mannitol treatment of 1 h caused a 4-fold increase in ABA efflux into the medium.
- Mechanism Water stress, root growth, osmotic potential and ABA level appear to interact in maize roots.