Cited by 428Genetic Mapping and Diversity in Plants and AnimalsGenetics and Plant BreedingCrop Yield and Soil Fertility

Combining quantitative trait Loci analysis and an ecophysiological model to analyze the genetic variability of the responses of maize leaf growth to temperature and water deficit

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Reymond, Matthieu, Muller, Bertrand, Leonardi, Agnès, Charcosset, Alain, Tardieu, François·2003·Plant Physiology

Abstract

Ecophysiological models predict quantitative traits of one genotype in any environment, whereas quantitative trait locus (QTL) models predict the contribution of alleles to quantitative traits under a limited number of environments. We have combined both approaches by dissecting into effects of QTLs the parameters of a model of maize (Zea mays) leaf elongation rate (LER; H. Ben Haj Salah, F. Tardieu [1997] Plant Physiol 114: 893–900). Response curves of LER to meristem temperature, water vapor pressure difference, and soil water status were established in 100 recombinant inbred lines (RILs) of maize in six experiments carried out in the field or in the greenhouse. All responses were linear and common to different experiments, consistent with the model. A QTL analysis was carried out on the slopes of these responses by composite interval mapping confirmed by bootstrap analysis. Most QTLs were specific of one response only. QTLs of abscisic acid concentration in the xylem sap colocalized with QTLs of response to soil water deficit and conferred a low response. Each parameter of the ecophysiological model was computed as the sum of QTL effects, allowing calculation of parameters for 11 new RILs and two parental lines. LERs were simulated and compared with measurements in a growth chamber experiment. The combined model accounted for 74% of the variability of LER, suggesting that it has a general value for any RIL under any environment.

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  • Component physiological traits may be realistically modeled based on a relatively simple genetic architecture, and for such traits QTL explaining a sizable proportion of genetic variance can be mapped and characterized.

    “In contrast to the complex trait of interest, component physiological traits may be realistically modeled based on a relatively simple genetic architecture, and for such traits, QTL explaining a sizable proportion of genetic variance can be mapped and characterized [71, 93–96].”

    From Integrating Crop Growth Models with Whole Genome Prediction through Approximate Bayesian Computation (2015) · cites this paper as [93]

    In “QTLs of Intrinsic LER” (page unavailable), the paper models a component of maize leaf growth and reports that its QTL model explains 55% of phenotypic variability. This supports the feasibility of modeling and mapping component traits, but the model includes nine significant QTLs, six detected through epistatic interactions; it does not establish the relatively simple genetic architecture asserted in the claim. (LLM, conf=0.82)

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Authors
Reymond, M., Muller, B., Leonardi, A., Charcosset, A., & Tardieu, F.
Affiliations
  • Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement (FR)
  • Station de Génétique Végétale (Institut National de la Recherche Agronomique/Université de Paris-Sud/Institut National Agronomique Paris-Grignon) Ferme du Moulon, 91190 Gif-sur-Yvette, France (A.L., A.C.)
  • Institut National de la Recherche Agronomique (FR)
  • Laboratoire d'Ecophysiologie des Plantes sous Stress Environnementaux, (Institut National de la Recherche Agronomique-Ecole Nationale Supérieure d'Agronomie de Montpellier) 2, Place Viala, F–34060 Montpellier cedex, France (M.R., B.M., F.T.); and
Venue
Plant Physiology
Published
2003-02-01
Volume
131
Issue
2
Pages
664-675
ISSN
  • 0032-0889 (ISSN-L)
  • 1532-2548
OpenAlex
W2148634166
Cited by
428
References
43
Citations by year
2026: 8 · 2025: 6 · 2024: 8 · 2023: 9 · 2022: 12 · 2021: 19 · 2020: 19 · 2019: 15 · 2018: 21 · 2017: 15 · 2016: 28 · 2015: 20 · 2014: 25 · 2013: 21 · 2012: 22
FWCI
9.69
Type
journal article
Language
en
Open access
Locations
  • PLANT PHYSIOLOGY (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Université de Montpellier
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Mapping and Diversity in Plants and Animals
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Genetics and Plant Breeding
  • Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Crop Yield and Soil Fertility
Keywords
maize, leaf elongation rate, quantitative trait loci, ecophysiological model, drought stress, temperature effects, recombinant inbred lines, abscisic acid, xylem sap, soil water status, vapor pressure deficit, QTL mapping, composite interval mapping, genetic variation
MeSH terms
Abscisic Acid, Zea mays, Crosses, Genetic, Ecology, Models, Biological, Recombination, Genetic, Soil, Temperature, Genetic Variation, Water, Plant Leaves, Meristem, Quantitative Trait Loci

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