Claim · model-written summary
The data support ABA glucose conjugate as a long-distance ABA transport form.
- Taxon
- barley
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Hordeum vulgaree1 - Compound
- glucose conjugatee0
- Outcome
- long‐distance transport form of ABAe0
Not reportedMaterialGeneOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
e0“the glucose conjugate is a long‐distance transport form of ABA”
e1“barley primary leaves (Hordeum vulgare cv. Gerbel)”
Title
Karl‐Josef Dietz; Angela Sauter; Kathrin Wichert; et al. Journal of Experimental Botany 2000. doi:10.1093/jxb/51.346.937
Other claims from this paper (13)
- Intervention effect Salinity increased ABA conjugate concentration in barley xylem sap.
- Observation ABA conjugate concentration remained low in barley primary-leaf intercellular washing fluid.
- Mechanism Barley leaf intercellular washing fluid contained glucosidase activity that released ABA from conjugate.
- Intervention effect Incubating ABA glucose ester with intercellular washing fluid released free ABA.
- Observation The released product matched authentic ABA on chromatography and ABA-ELISA.
- Observation The barley glucosidase KM for pNPG was 1.8 mmol l−1.
- Intervention effect ABA glucopyranoside competitively inhibited glucosidase activity with KI 400 μmol l−1.
- Intervention effect ABA glucopyranoside showed the highest glucosidase inhibition.
- Intervention effect Zeatin riboside showed the highest glucosidase inhibition.
- Intervention effect ABA methyl ester inhibition of glucosidase was insignificant.
- Intervention effect Zeatin-9-beta-d-glucoside inhibition of glucosidase was insignificant.
- Observation Specific glucosidase activity was 16-fold greater in intercellular washing fluid than crude leaf extracts.
- Intervention effect NaCl-supplemented hydroponic growth strongly increased glucosidase activity.