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Stomatal clustering in Begonia associates with the kinetics of leaf gaseous exchange and influences water use efficiency
Stomata are microscopic pores formed by specialized cells in the leaf epidermis and permit gaseous exchange between the interior of the leaf and the atmosphere. Stomata in most plants are separated by at least one epidermal pavement cell and, individually, overlay a single substomatal cavity within...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5447881/ https://www.ncbi.nlm.nih.gov/pubmed/28369641 http://dx.doi.org/10.1093/jxb/erx072 |
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author | Papanatsiou, Maria Amtmann, Anna Blatt, Michael R. |
author_facet | Papanatsiou, Maria Amtmann, Anna Blatt, Michael R. |
author_sort | Papanatsiou, Maria |
collection | PubMed |
description | Stomata are microscopic pores formed by specialized cells in the leaf epidermis and permit gaseous exchange between the interior of the leaf and the atmosphere. Stomata in most plants are separated by at least one epidermal pavement cell and, individually, overlay a single substomatal cavity within the leaf. This spacing is thought to enhance stomatal function. Yet, there are several genera naturally exhibiting stomata in clusters and therefore deviating from the one-cell spacing rule with multiple stomata overlaying a single substomatal cavity. We made use of two Begonia species to investigate whether clustering of stomata alters guard cell dynamics and gas exchange under different light and dark treatments. Begonia plebeja, which forms stomatal clusters, exhibited enhanced kinetics of stomatal conductance and CO(2) assimilation upon light stimuli that in turn were translated into greater water use efficiency. Our findings emphasize the importance of spacing in stomatal clusters for gaseous exchange and plant performance under environmentally limited conditions. |
format | Online Article Text |
id | pubmed-5447881 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-54478812017-06-02 Stomatal clustering in Begonia associates with the kinetics of leaf gaseous exchange and influences water use efficiency Papanatsiou, Maria Amtmann, Anna Blatt, Michael R. J Exp Bot Research Paper Stomata are microscopic pores formed by specialized cells in the leaf epidermis and permit gaseous exchange between the interior of the leaf and the atmosphere. Stomata in most plants are separated by at least one epidermal pavement cell and, individually, overlay a single substomatal cavity within the leaf. This spacing is thought to enhance stomatal function. Yet, there are several genera naturally exhibiting stomata in clusters and therefore deviating from the one-cell spacing rule with multiple stomata overlaying a single substomatal cavity. We made use of two Begonia species to investigate whether clustering of stomata alters guard cell dynamics and gas exchange under different light and dark treatments. Begonia plebeja, which forms stomatal clusters, exhibited enhanced kinetics of stomatal conductance and CO(2) assimilation upon light stimuli that in turn were translated into greater water use efficiency. Our findings emphasize the importance of spacing in stomatal clusters for gaseous exchange and plant performance under environmentally limited conditions. Oxford University Press 2017-04-01 2017-03-28 /pmc/articles/PMC5447881/ /pubmed/28369641 http://dx.doi.org/10.1093/jxb/erx072 Text en © The Author 2017. Published by Oxford University Press on behalf of the Society for Experimental Biology. http://creativecommons.org/licenses/by/4.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Paper Papanatsiou, Maria Amtmann, Anna Blatt, Michael R. Stomatal clustering in Begonia associates with the kinetics of leaf gaseous exchange and influences water use efficiency |
title | Stomatal clustering in Begonia associates with the kinetics of leaf gaseous exchange and influences water use efficiency |
title_full | Stomatal clustering in Begonia associates with the kinetics of leaf gaseous exchange and influences water use efficiency |
title_fullStr | Stomatal clustering in Begonia associates with the kinetics of leaf gaseous exchange and influences water use efficiency |
title_full_unstemmed | Stomatal clustering in Begonia associates with the kinetics of leaf gaseous exchange and influences water use efficiency |
title_short | Stomatal clustering in Begonia associates with the kinetics of leaf gaseous exchange and influences water use efficiency |
title_sort | stomatal clustering in begonia associates with the kinetics of leaf gaseous exchange and influences water use efficiency |
topic | Research Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5447881/ https://www.ncbi.nlm.nih.gov/pubmed/28369641 http://dx.doi.org/10.1093/jxb/erx072 |
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