ArticleJournal of experimental botany2014
Senescence-inducible cell wall and intracellular purple acid phosphatases: implications for phosphorus remobilization in Hakea prostrata (Proteaceae) and Arabidopsis thaliana (Brassicaceae).
Article in Journal of experimental botany, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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18 citing papers in PubMed, 78 citations in OpenAlex.
- Vacuolar phosphatases are essential for efficient nucleotide salvage in Arabidopsis.Journal of experimental botany · 2025Article
- Sulfate Availability and Hormonal Signaling in the Coordination of Plant Growth and Development.International journal of molecular sciences · 2024Review
- The multifaceted nature of plant acid phosphatases: purification, biochemical features, and applications.Journal of enzyme inhibition and medicinal chemistry · 2023Review
- Metabolic footprints in phosphate-starved plants.Physiology and molecular biology of plants : an international journal of functional plant biology · 2023Review
- Adaptive strategies of plants to conserve internal phosphorus under P deficient condition to improve P utilization efficiency.Physiology and molecular biology of plants : an international journal of functional plant biology · 2022Review
- Mechanisms for improving phosphorus utilization efficiency in plants.Annals of botany · 2022Review
- Purple acid phosphatases: roles in phosphate utilization and new emerging functions.Plant cell reports · 2022Review
- Maize ZmPT7 regulates Pi uptake and redistribution which is modulated by phosphorylation.Plant biotechnology journal · 2020Article
- An Update on Nitric Oxide Production and Role Under Phosphorus Scarcity in Plants.Frontiers in plant science · 2020Review
- Article
- Cell Wall Proteins Play Critical Roles in Plant Adaptation to Phosphorus Deficiency.International journal of molecular sciences · 2019Review
- ZmAPRG, an uncharacterized gene, enhances acid phosphatase activity and Pi concentration in maize leaf during phosphate starvation.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2019Article
- Transcriptional response of rice flag leaves to restricted external phosphorus supply during grain filling in rice cv. IR64.PloS one · 2018Article
- Nutrient Use Efficiency of Southern South America Proteaceae Species. Are there General Patterns in the Proteaceae Family?Frontiers in plant science · 2018Article
- Phosphorus remobilization from rice flag leaves during grain filling: an RNA-seq study.Plant biotechnology journal · 2017Article
- Phosphate Uptake and Allocation - A Closer Look at Arabidopsis thaliana L. and Oryza sativa L.Frontiers in plant science · 2016Review
- Molecular Mechanisms of Phosphorus Metabolism and Transport during Leaf Senescence.Plants (Basel, Switzerland) · 2015Review
- The maize (Zea mays ssp. mays var. B73) genome encodes 33 members of the purple acid phosphatase family.Frontiers in plant science · 2015Article
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4 authors at 2 institutions in 2 countries.
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No grant is acknowledged in the PubMed record.
Abstract
Despite its agronomic importance, the metabolic networks mediating phosphorus (P) remobilization during plant senescence are poorly understood. Highly efficient P remobilization (~85%) from senescing leaves and proteoid roots of harsh hakea (Hakea prostrata), a native 'extremophile' plant of south-western Australia, was linked with striking up-regulation of cell wall-localized and intracellular acid phosphatase (APase) and RNase activities. Non-denaturing PAGE followed by in-gel APase activity staining revealed senescence-inducible 120kDa and 60kDa intracellular APase isoforms, whereas only the 120kDa isoform was detected in corresponding cell wall fractions. Kinetic and immunological properties of the 120kDa and 60kDa APases partially purified from senescing leaves indicated that they are purple acid phosphatases (PAPs). Results obtained with cell wall-targeted hydrolases of harsh hakea were corroborated using Arabidopsis thaliana in which an ~200% increase in cell wall APase activity during leaf senescence was paralleled by accumulation of immunoreactive 55kDa AtPAP26 polypeptides. Senescing leaves of an atpap26 T-DNA insertion mutant displayed a >90% decrease in cell wall APase activity. Previous research established that senescing leaves of atpap26 plants exhibited a similar reduction in intracellular (vacuolar) APase activity, while displaying markedly impaired P remobilization efficiency and delayed senescence. It is hypothesized that up-regulation and dual targeting of PAPs and RNases to the cell wall and vacuolar compartments make a crucial contribution to highly efficient P remobilization that dominates the P metabolism of senescing tissues of harsh hakea and Arabidopsis. To the best of the authors' knowledge, the apparent contribution of cell wall-targeted hydrolases to remobilizing key macronutrients such as P during senescence has not been previously suggested.
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