Below-ground physiological processes enhancing phosphorus acquisition in plants
| Autor: | Malcolm J. Hawkesford, Renu Pandey, P. R. Soumya, Krishnapriya Vengavasi, Kadambot H. M. Siddique |
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| Rok vydání: | 2021 |
| Předmět: |
Phosphorus uptake
Rhizosphere Carboxylic acids Root exudation Physiology Phosphorus Microorganism Phosphatases food and beverages chemistry.chemical_element Plant physiology Low molecular weight compounds Cell Biology Plant Science Anion transporters Bioavailability Plant ecology chemistry Agronomy Soil water Genetics Eutrophication Ecology Evolution Behavior and Systematics |
| Zdroj: | Plant Physiology Reports. 26:600-613 |
| ISSN: | 2662-2548 2662-253X |
| DOI: | 10.1007/s40502-021-00627-8 |
| Popis: | Phosphorus (P) is an essential element for crop growth and development. In acid soils, inorganic P (Pi) is immobilised with Fe3+ and Al3+, whereas in calcareous soils, it is fixed with Ca2+. Therefore, P nutrition is not constrained by soil P content per se but by its bioavailability to plants. The large amounts of P fertiliser applied to agricultural land to increase crop P availability can cause eutrophication of non-flowing water bodies. Being a non-renewable resource, P reserves are becoming depleted. Soil P mobilisation is governed by multiple adaptations at the physiological and molecular levels. Below-ground physiological processes including favourable root architecture and morphology, and release of carboxylates, protons and root secretory phosphohydrolases result in significant modification of the rhizosphere microenvironment thereby enhancing P acquisition. Beneficial soil microorganisms work in tandem with plants to mobilise bioavailable soil P. Phosphorus acquisition through rhizosphere modifications is an exciting area of research for plant nutritionists. |
| Databáze: | OpenAIRE |
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