Journal article
Effect of phosphorus deficiency and water deficit on phosphatase activities from wheat leaves
Journal of Experimental Botany, Vol.33(4), pp.682-693
1982
Abstract
Wheat was sown in a phosphorus (P) deficient soil. Plants at low levels of applied P had lower growth rates and lower concentrations of phosphate in the shoots than plants grown with ‘high P’. Activities of both insoluble and soluble phosphatase increased with P deficiency in the mature leaves. Soluble phosphatase activities increased 2.5–3.0 fold as the concentration of phosphate in the leaves fell from 0.4% to 0.1% dry weight This increase was not a consequence of reduced growth, as severe nitrogen deficiency had no effect on phosphatase activity.
Soluble phosphatase activities were higher in young than in mature leaves, and also increased 3–4 fold with severe water deficit. However these increases in activity were not accompanied by low concentrations of phosphate. Moreover, soluble phosphatase activities in mature leaves of plants grown under conditions of water deficit rapidly decreased after rewatering. In contrast, the high soluble phosphatase activities in mature leaves of P deficient wheat persisted for up to 12 d after the resupply of P to adequate levels.
Details
- Title
- Effect of phosphorus deficiency and water deficit on phosphatase activities from wheat leaves
- Authors/Creators
- E.G. Barrett-Lennard (Author/Creator) - The University of Western AustraliaA.D. Robson (Author/Creator) - The University of Western AustraliaH. Greenway (Author/Creator) - The University of Western Australia
- Publication Details
- Journal of Experimental Botany, Vol.33(4), pp.682-693
- Publisher
- Oxford University Press
- Identifiers
- 991005546331207891
- Copyright
- © 1982 Oxford University Press
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.45 Soil Science
- 3.45.473 Soil Phosphorus Dynamics
- Web Of Science research areas
- Plant Sciences
- ESI research areas
- Plant & Animal Science