A conceptual model of root hair ideotypes for future agricultural environments

what combination of traits should be targeted to cope with limited P availability?

L. K. Brown, T. S. George, L. X. Dupuy, P. J. White

    Research output: Contribution to journalEditorial

    60 Citations (Scopus)

    Abstract

    Phosphorus (P) often limits crop production and is frequently applied as fertilizer; however, supplies of quality rock phosphate for fertilizer production are diminishing. Plants have evolved many mechanisms to increase their P acquisition, and an understanding of these traits could result in improved long-term sustainability of agriculture. This Viewpoint focuses on the potential benefits of root hairs to sustainable production.

    First the various root-related traits that could be deployed to improve agricultural sustainability are catalogued, and their potential costs and benefits to the plant are discussed. A novel mathematical model describing the effects of length, density and longevity of root hairs on P acquisition is developed, and the relative benefits of these three root-hair traits to plant P nutrition are calculated. Insights from this model are combined with experimental data to assess the relative benefits of a range of root hair ideotypes for sustainability of agriculture.

    A costbenefit analysis of root traits suggests that root hairs have the greatest potential for P acquisition relative to their cost of production. The novel modelling of root hair development indicates that the greatest gains in P-uptake efficiency are likely to be made through increased length and longevity of root hairs rather than by increasing their density. Synthesizing this information with that from published experiments we formulate six potential ideotypes to improve crop P acquisition. These combine appropriate root hair phenotypes with architectural, anatomical and biochemical traits, such that more root-hair zones are produced in surface soils, where P resources are found, on roots which are metabolically cheap to construct and maintain, and that release more P-mobilizing exudates. These ideotypes could be used to inform breeding programmes to enhance agricultural sustainability.

    Original languageEnglish
    Pages (from-to)317-330
    Number of pages14
    JournalAnnals of Botany
    Volume112
    Issue number2
    DOIs
    Publication statusPublished - 2013

    Keywords

    • WHITE LUPIN
    • LUPINUS-ALBUS L
    • Hordeum vulgare
    • BARLEY HORDEUM-VULGARE
    • benefit
    • ARBUSCULAR MYCORRHIZAL FUNGI
    • phosphorus
    • modelling
    • root function
    • cost
    • root architecture
    • TRIFOLIUM-SUBTERRANEUM L.
    • INDUCED CHEMICAL-CHANGES
    • barley
    • root hairs
    • BEAN PHASEOLUS-VULGARIS
    • PLANT-GROWTH PROMOTION
    • root anatomy
    • Arabidopsis
    • LOW PHOSPHORUS AVAILABILITY
    • ARABIDOPSIS-THALIANA

    Cite this

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    title = "A conceptual model of root hair ideotypes for future agricultural environments: what combination of traits should be targeted to cope with limited P availability?",
    abstract = "Phosphorus (P) often limits crop production and is frequently applied as fertilizer; however, supplies of quality rock phosphate for fertilizer production are diminishing. Plants have evolved many mechanisms to increase their P acquisition, and an understanding of these traits could result in improved long-term sustainability of agriculture. This Viewpoint focuses on the potential benefits of root hairs to sustainable production.First the various root-related traits that could be deployed to improve agricultural sustainability are catalogued, and their potential costs and benefits to the plant are discussed. A novel mathematical model describing the effects of length, density and longevity of root hairs on P acquisition is developed, and the relative benefits of these three root-hair traits to plant P nutrition are calculated. Insights from this model are combined with experimental data to assess the relative benefits of a range of root hair ideotypes for sustainability of agriculture.A costbenefit analysis of root traits suggests that root hairs have the greatest potential for P acquisition relative to their cost of production. The novel modelling of root hair development indicates that the greatest gains in P-uptake efficiency are likely to be made through increased length and longevity of root hairs rather than by increasing their density. Synthesizing this information with that from published experiments we formulate six potential ideotypes to improve crop P acquisition. These combine appropriate root hair phenotypes with architectural, anatomical and biochemical traits, such that more root-hair zones are produced in surface soils, where P resources are found, on roots which are metabolically cheap to construct and maintain, and that release more P-mobilizing exudates. These ideotypes could be used to inform breeding programmes to enhance agricultural sustainability.",
    keywords = "WHITE LUPIN, LUPINUS-ALBUS L, Hordeum vulgare, BARLEY HORDEUM-VULGARE, benefit, ARBUSCULAR MYCORRHIZAL FUNGI, phosphorus, modelling, root function, cost, root architecture, TRIFOLIUM-SUBTERRANEUM L., INDUCED CHEMICAL-CHANGES, barley, root hairs, BEAN PHASEOLUS-VULGARIS, PLANT-GROWTH PROMOTION, root anatomy, Arabidopsis, LOW PHOSPHORUS AVAILABILITY, ARABIDOPSIS-THALIANA",
    author = "Brown, {L. K.} and George, {T. S.} and Dupuy, {L. X.} and White, {P. J.}",
    year = "2013",
    doi = "10.1093/aob/mcs231",
    language = "English",
    volume = "112",
    pages = "317--330",
    journal = "Annals of Botany",
    issn = "0305-7364",
    publisher = "Oxford University Press",
    number = "2",

    }

    A conceptual model of root hair ideotypes for future agricultural environments : what combination of traits should be targeted to cope with limited P availability? / Brown, L. K.; George, T. S.; Dupuy, L. X.; White, P. J.

    In: Annals of Botany, Vol. 112, No. 2, 2013, p. 317-330.

    Research output: Contribution to journalEditorial

    TY - JOUR

    T1 - A conceptual model of root hair ideotypes for future agricultural environments

    T2 - what combination of traits should be targeted to cope with limited P availability?

    AU - Brown, L. K.

    AU - George, T. S.

    AU - Dupuy, L. X.

    AU - White, P. J.

    PY - 2013

    Y1 - 2013

    N2 - Phosphorus (P) often limits crop production and is frequently applied as fertilizer; however, supplies of quality rock phosphate for fertilizer production are diminishing. Plants have evolved many mechanisms to increase their P acquisition, and an understanding of these traits could result in improved long-term sustainability of agriculture. This Viewpoint focuses on the potential benefits of root hairs to sustainable production.First the various root-related traits that could be deployed to improve agricultural sustainability are catalogued, and their potential costs and benefits to the plant are discussed. A novel mathematical model describing the effects of length, density and longevity of root hairs on P acquisition is developed, and the relative benefits of these three root-hair traits to plant P nutrition are calculated. Insights from this model are combined with experimental data to assess the relative benefits of a range of root hair ideotypes for sustainability of agriculture.A costbenefit analysis of root traits suggests that root hairs have the greatest potential for P acquisition relative to their cost of production. The novel modelling of root hair development indicates that the greatest gains in P-uptake efficiency are likely to be made through increased length and longevity of root hairs rather than by increasing their density. Synthesizing this information with that from published experiments we formulate six potential ideotypes to improve crop P acquisition. These combine appropriate root hair phenotypes with architectural, anatomical and biochemical traits, such that more root-hair zones are produced in surface soils, where P resources are found, on roots which are metabolically cheap to construct and maintain, and that release more P-mobilizing exudates. These ideotypes could be used to inform breeding programmes to enhance agricultural sustainability.

    AB - Phosphorus (P) often limits crop production and is frequently applied as fertilizer; however, supplies of quality rock phosphate for fertilizer production are diminishing. Plants have evolved many mechanisms to increase their P acquisition, and an understanding of these traits could result in improved long-term sustainability of agriculture. This Viewpoint focuses on the potential benefits of root hairs to sustainable production.First the various root-related traits that could be deployed to improve agricultural sustainability are catalogued, and their potential costs and benefits to the plant are discussed. A novel mathematical model describing the effects of length, density and longevity of root hairs on P acquisition is developed, and the relative benefits of these three root-hair traits to plant P nutrition are calculated. Insights from this model are combined with experimental data to assess the relative benefits of a range of root hair ideotypes for sustainability of agriculture.A costbenefit analysis of root traits suggests that root hairs have the greatest potential for P acquisition relative to their cost of production. The novel modelling of root hair development indicates that the greatest gains in P-uptake efficiency are likely to be made through increased length and longevity of root hairs rather than by increasing their density. Synthesizing this information with that from published experiments we formulate six potential ideotypes to improve crop P acquisition. These combine appropriate root hair phenotypes with architectural, anatomical and biochemical traits, such that more root-hair zones are produced in surface soils, where P resources are found, on roots which are metabolically cheap to construct and maintain, and that release more P-mobilizing exudates. These ideotypes could be used to inform breeding programmes to enhance agricultural sustainability.

    KW - WHITE LUPIN

    KW - LUPINUS-ALBUS L

    KW - Hordeum vulgare

    KW - BARLEY HORDEUM-VULGARE

    KW - benefit

    KW - ARBUSCULAR MYCORRHIZAL FUNGI

    KW - phosphorus

    KW - modelling

    KW - root function

    KW - cost

    KW - root architecture

    KW - TRIFOLIUM-SUBTERRANEUM L.

    KW - INDUCED CHEMICAL-CHANGES

    KW - barley

    KW - root hairs

    KW - BEAN PHASEOLUS-VULGARIS

    KW - PLANT-GROWTH PROMOTION

    KW - root anatomy

    KW - Arabidopsis

    KW - LOW PHOSPHORUS AVAILABILITY

    KW - ARABIDOPSIS-THALIANA

    U2 - 10.1093/aob/mcs231

    DO - 10.1093/aob/mcs231

    M3 - Editorial

    VL - 112

    SP - 317

    EP - 330

    JO - Annals of Botany

    JF - Annals of Botany

    SN - 0305-7364

    IS - 2

    ER -