Cargando…

Distinct Morphological, Physiological, and Biochemical Responses to Light Quality in Barley Leaves and Roots

Light quality modulates plant growth, development, physiology, and metabolism through a series of photoreceptors perceiving light signal and related signaling pathways. Although the partial mechanisms of the responses to light quality are well understood, how plants orchestrate these impacts on the...

Descripción completa

Detalles Bibliográficos
Autores principales: Klem, Karel, Gargallo-Garriga, Albert, Rattanapichai, Wutthida, Oravec, Michal, Holub, Petr, Veselá, Barbora, Sardans, Jordi, Peñuelas, Josep, Urban, Otmar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6703096/
https://www.ncbi.nlm.nih.gov/pubmed/31475023
http://dx.doi.org/10.3389/fpls.2019.01026
_version_ 1783445368267079680
author Klem, Karel
Gargallo-Garriga, Albert
Rattanapichai, Wutthida
Oravec, Michal
Holub, Petr
Veselá, Barbora
Sardans, Jordi
Peñuelas, Josep
Urban, Otmar
author_facet Klem, Karel
Gargallo-Garriga, Albert
Rattanapichai, Wutthida
Oravec, Michal
Holub, Petr
Veselá, Barbora
Sardans, Jordi
Peñuelas, Josep
Urban, Otmar
author_sort Klem, Karel
collection PubMed
description Light quality modulates plant growth, development, physiology, and metabolism through a series of photoreceptors perceiving light signal and related signaling pathways. Although the partial mechanisms of the responses to light quality are well understood, how plants orchestrate these impacts on the levels of above- and below-ground tissues and molecular, physiological, and morphological processes remains unclear. However, the re-allocation of plant resources can substantially adjust plant tolerance to stress conditions such as reduced water availability. In this study, we investigated in two spring barley genotypes the effect of ultraviolet-A (UV-A), blue, red, and far-red light on morphological, physiological, and metabolic responses in leaves and roots. The plants were grown in growth units where the root system develops on black filter paper, placed in growth chambers. While the growth of above-ground biomass and photosynthetic performance were enhanced mainly by the combined action of red, blue, far-red, and UV-A light, the root growth was stimulated particularly by supplementary far-red light to red light. Exposure of plants to the full light spectrum also stimulates the accumulation of numerous compounds related to stress tolerance such as proline, secondary metabolites with antioxidative functions or jasmonic acid. On the other hand, full light spectrum reduces the accumulation of abscisic acid, which is closely associated with stress responses. Addition of blue light induced accumulation of γ-aminobutyric acid (GABA), sorgolactone, or several secondary metabolites. Because these compounds play important roles as osmolytes, antioxidants, UV screening compounds, or growth regulators, the importance of light quality in stress tolerance is unequivocal.
format Online
Article
Text
id pubmed-6703096
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-67030962019-08-30 Distinct Morphological, Physiological, and Biochemical Responses to Light Quality in Barley Leaves and Roots Klem, Karel Gargallo-Garriga, Albert Rattanapichai, Wutthida Oravec, Michal Holub, Petr Veselá, Barbora Sardans, Jordi Peñuelas, Josep Urban, Otmar Front Plant Sci Plant Science Light quality modulates plant growth, development, physiology, and metabolism through a series of photoreceptors perceiving light signal and related signaling pathways. Although the partial mechanisms of the responses to light quality are well understood, how plants orchestrate these impacts on the levels of above- and below-ground tissues and molecular, physiological, and morphological processes remains unclear. However, the re-allocation of plant resources can substantially adjust plant tolerance to stress conditions such as reduced water availability. In this study, we investigated in two spring barley genotypes the effect of ultraviolet-A (UV-A), blue, red, and far-red light on morphological, physiological, and metabolic responses in leaves and roots. The plants were grown in growth units where the root system develops on black filter paper, placed in growth chambers. While the growth of above-ground biomass and photosynthetic performance were enhanced mainly by the combined action of red, blue, far-red, and UV-A light, the root growth was stimulated particularly by supplementary far-red light to red light. Exposure of plants to the full light spectrum also stimulates the accumulation of numerous compounds related to stress tolerance such as proline, secondary metabolites with antioxidative functions or jasmonic acid. On the other hand, full light spectrum reduces the accumulation of abscisic acid, which is closely associated with stress responses. Addition of blue light induced accumulation of γ-aminobutyric acid (GABA), sorgolactone, or several secondary metabolites. Because these compounds play important roles as osmolytes, antioxidants, UV screening compounds, or growth regulators, the importance of light quality in stress tolerance is unequivocal. Frontiers Media S.A. 2019-08-14 /pmc/articles/PMC6703096/ /pubmed/31475023 http://dx.doi.org/10.3389/fpls.2019.01026 Text en Copyright © 2019 Klem, Gargallo-Garriga, Rattanapichai, Oravec, Holub, Veselá, Sardans, Peñuelas and Urban 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
Klem, Karel
Gargallo-Garriga, Albert
Rattanapichai, Wutthida
Oravec, Michal
Holub, Petr
Veselá, Barbora
Sardans, Jordi
Peñuelas, Josep
Urban, Otmar
Distinct Morphological, Physiological, and Biochemical Responses to Light Quality in Barley Leaves and Roots
title Distinct Morphological, Physiological, and Biochemical Responses to Light Quality in Barley Leaves and Roots
title_full Distinct Morphological, Physiological, and Biochemical Responses to Light Quality in Barley Leaves and Roots
title_fullStr Distinct Morphological, Physiological, and Biochemical Responses to Light Quality in Barley Leaves and Roots
title_full_unstemmed Distinct Morphological, Physiological, and Biochemical Responses to Light Quality in Barley Leaves and Roots
title_short Distinct Morphological, Physiological, and Biochemical Responses to Light Quality in Barley Leaves and Roots
title_sort distinct morphological, physiological, and biochemical responses to light quality in barley leaves and roots
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6703096/
https://www.ncbi.nlm.nih.gov/pubmed/31475023
http://dx.doi.org/10.3389/fpls.2019.01026
work_keys_str_mv AT klemkarel distinctmorphologicalphysiologicalandbiochemicalresponsestolightqualityinbarleyleavesandroots
AT gargallogarrigaalbert distinctmorphologicalphysiologicalandbiochemicalresponsestolightqualityinbarleyleavesandroots
AT rattanapichaiwutthida distinctmorphologicalphysiologicalandbiochemicalresponsestolightqualityinbarleyleavesandroots
AT oravecmichal distinctmorphologicalphysiologicalandbiochemicalresponsestolightqualityinbarleyleavesandroots
AT holubpetr distinctmorphologicalphysiologicalandbiochemicalresponsestolightqualityinbarleyleavesandroots
AT veselabarbora distinctmorphologicalphysiologicalandbiochemicalresponsestolightqualityinbarleyleavesandroots
AT sardansjordi distinctmorphologicalphysiologicalandbiochemicalresponsestolightqualityinbarleyleavesandroots
AT penuelasjosep distinctmorphologicalphysiologicalandbiochemicalresponsestolightqualityinbarleyleavesandroots
AT urbanotmar distinctmorphologicalphysiologicalandbiochemicalresponsestolightqualityinbarleyleavesandroots