Claim · model-written summary
Nitrate supply increased apoplastic pH in young green sunflower leaves relative to ammonium supply.
- Taxon
- Helianthus annuus
Helianthus annuuse0 - Organ / stage
- young green leavese0
- Treatment
- nitrate supplye0
- Outcome
- pHe0
- Direction
- increasee0
- Comparator
- ammonium supplye0
Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nitrate supply in contrast to ammonium supply induced a pH increase in the apoplast of young green leaves of Helianthus annuus”
Title
Harald Kosegarten; Bernd Hoffmann; Konrad Mengel Journal of Plant Nutrition and Soil Science 2001. doi:10.1002/1522-2624(200104)164:2<155::aid-jpln155>3.0.co;2-f
Other claims from this paper (9)
- Intervention effect Nitrate nutrition was followed within 12 hours by yellowing of sunflower leaves.
- Intervention effect Bicarbonate at physiological concentrations had virtually no influence on leaf apoplastic pH.
- Intervention effect Diluted acid sprays decreased leaf apoplastic pH.
- Intervention effect Diluted acid sprays were followed by leaf re-greening.
- Observation Fe concentrations were the same in yellow control leaves and acid-sprayed green leaves.
- Mechanism Fe efficiency in leaves was interpreted as mainly related to Fe distribution between apoplast and symplast.
- Observation Nitrate-induced Fe chlorosis began at the base of the youngest leaves.
- Observation Yellowing spread from leaf base to tip, reaching 98% after seven days of nitrate supply.
- Method / resource FITC-Dextran loaded into intact leaves did not penetrate the symplast.