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Deciphering Root Architectural Traits Involved to Cope With Water Deficit in Oat

Drought tolerance is a complex phenomenon comprising many physiological, biochemical and morphological changes at both aerial and below ground levels. We aim to reveal changes on root morphology that promote drought tolerance in oat in both seedling and adult plants. To this aim, we employed two oat...

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Autores principales: Canales, Francisco J., Nagel, Kerstin A., Müller, Carmen, Rispail, Nicolas, Prats, Elena
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6892839/
https://www.ncbi.nlm.nih.gov/pubmed/31850037
http://dx.doi.org/10.3389/fpls.2019.01558
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author Canales, Francisco J.
Nagel, Kerstin A.
Müller, Carmen
Rispail, Nicolas
Prats, Elena
author_facet Canales, Francisco J.
Nagel, Kerstin A.
Müller, Carmen
Rispail, Nicolas
Prats, Elena
author_sort Canales, Francisco J.
collection PubMed
description Drought tolerance is a complex phenomenon comprising many physiological, biochemical and morphological changes at both aerial and below ground levels. We aim to reveal changes on root morphology that promote drought tolerance in oat in both seedling and adult plants. To this aim, we employed two oat genotypes, previously characterized as susceptible and tolerant to drought. Root phenotyping was carried out on young plants grown either in pots or in rhizotrons under controlled environments, and on adult plants grown in big containers under field conditions. Overall, the tolerant genotype showed an increased root length, branching rate, root surface, and length of fine roots, while coarse to fine ratio decreased as compared with the susceptible genotype. We also observed a high and significant correlation between various morphological root traits within and between experiments, identifying several of them as appropriate markers to identify drought tolerant oat genotypes. Stimulation of fine root growth was one of the most prominent responses to cope with gradual soil water depletion, in both seedlings and adult plants. Although seedling experiments did not exactly match the response of adult plants, they were similarly informative for discriminating between tolerant and susceptible genotypes. This might contribute to easier and faster phenotyping of large amount of plants.
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spelling pubmed-68928392019-12-17 Deciphering Root Architectural Traits Involved to Cope With Water Deficit in Oat Canales, Francisco J. Nagel, Kerstin A. Müller, Carmen Rispail, Nicolas Prats, Elena Front Plant Sci Plant Science Drought tolerance is a complex phenomenon comprising many physiological, biochemical and morphological changes at both aerial and below ground levels. We aim to reveal changes on root morphology that promote drought tolerance in oat in both seedling and adult plants. To this aim, we employed two oat genotypes, previously characterized as susceptible and tolerant to drought. Root phenotyping was carried out on young plants grown either in pots or in rhizotrons under controlled environments, and on adult plants grown in big containers under field conditions. Overall, the tolerant genotype showed an increased root length, branching rate, root surface, and length of fine roots, while coarse to fine ratio decreased as compared with the susceptible genotype. We also observed a high and significant correlation between various morphological root traits within and between experiments, identifying several of them as appropriate markers to identify drought tolerant oat genotypes. Stimulation of fine root growth was one of the most prominent responses to cope with gradual soil water depletion, in both seedlings and adult plants. Although seedling experiments did not exactly match the response of adult plants, they were similarly informative for discriminating between tolerant and susceptible genotypes. This might contribute to easier and faster phenotyping of large amount of plants. Frontiers Media S.A. 2019-11-28 /pmc/articles/PMC6892839/ /pubmed/31850037 http://dx.doi.org/10.3389/fpls.2019.01558 Text en Copyright © 2019 Canales, Nagel, Müller, Rispail and Prats http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Canales, Francisco J.
Nagel, Kerstin A.
Müller, Carmen
Rispail, Nicolas
Prats, Elena
Deciphering Root Architectural Traits Involved to Cope With Water Deficit in Oat
title Deciphering Root Architectural Traits Involved to Cope With Water Deficit in Oat
title_full Deciphering Root Architectural Traits Involved to Cope With Water Deficit in Oat
title_fullStr Deciphering Root Architectural Traits Involved to Cope With Water Deficit in Oat
title_full_unstemmed Deciphering Root Architectural Traits Involved to Cope With Water Deficit in Oat
title_short Deciphering Root Architectural Traits Involved to Cope With Water Deficit in Oat
title_sort deciphering root architectural traits involved to cope with water deficit in oat
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6892839/
https://www.ncbi.nlm.nih.gov/pubmed/31850037
http://dx.doi.org/10.3389/fpls.2019.01558
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