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Increased photosensitivity at early growth as a possible mechanism of maize adaptation to cold springs
Maize is a cold-sensitive species, but selective breeding programs have recently succeeded in producing plants strikingly well adapted to the cold springs of a temperate climate, showing the potential for improved cold tolerance. The aim of the present study was to determine whether the adaptation o...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6506767/ https://www.ncbi.nlm.nih.gov/pubmed/30825373 http://dx.doi.org/10.1093/jxb/erz096 |
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author | Grzybowski, Marcin Adamczyk, Józef Jończyk, Maciej Sobkowiak, Alicja Szczepanik, Jarosław Frankiewicz, Kamil Fronk, Jan Sowiński, Paweł |
author_facet | Grzybowski, Marcin Adamczyk, Józef Jończyk, Maciej Sobkowiak, Alicja Szczepanik, Jarosław Frankiewicz, Kamil Fronk, Jan Sowiński, Paweł |
author_sort | Grzybowski, Marcin |
collection | PubMed |
description | Maize is a cold-sensitive species, but selective breeding programs have recently succeeded in producing plants strikingly well adapted to the cold springs of a temperate climate, showing the potential for improved cold tolerance. The aim of the present study was to determine whether the adaptation of some inbred lines to spring chills is due to their increased true cold tolerance or whether it only represents an avoidance mechanism, which was the sole mode of adaptation during early stages of agricultural dispersal of maize towards higher latitudes. By characterizing numerous physiological features of several lines of different cold sensitivity, we show that a combination of both avoidance and tolerance is involved. A novel avoidance mechanism was found that favored unhindered development of the photosynthetic apparatus through protection of the shoot apex below soil level due to a shortened mesocotyl. It seems to be mediated by increased seedling photosensitivity at early growth stages. True tolerance involved improved protection of the cell membrane against cold injury at temperatures close to 0 °C and stimulation of light-induced processes (accumulation of anthocyanins, carotenoids, and chlorophyll, proper development of chloroplasts) at temperatures in the range of 10–14 °C, likely also related to the increased photosensitivity and mediated by gibberellin signaling. |
format | Online Article Text |
id | pubmed-6506767 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-65067672019-05-13 Increased photosensitivity at early growth as a possible mechanism of maize adaptation to cold springs Grzybowski, Marcin Adamczyk, Józef Jończyk, Maciej Sobkowiak, Alicja Szczepanik, Jarosław Frankiewicz, Kamil Fronk, Jan Sowiński, Paweł J Exp Bot Research Papers Maize is a cold-sensitive species, but selective breeding programs have recently succeeded in producing plants strikingly well adapted to the cold springs of a temperate climate, showing the potential for improved cold tolerance. The aim of the present study was to determine whether the adaptation of some inbred lines to spring chills is due to their increased true cold tolerance or whether it only represents an avoidance mechanism, which was the sole mode of adaptation during early stages of agricultural dispersal of maize towards higher latitudes. By characterizing numerous physiological features of several lines of different cold sensitivity, we show that a combination of both avoidance and tolerance is involved. A novel avoidance mechanism was found that favored unhindered development of the photosynthetic apparatus through protection of the shoot apex below soil level due to a shortened mesocotyl. It seems to be mediated by increased seedling photosensitivity at early growth stages. True tolerance involved improved protection of the cell membrane against cold injury at temperatures close to 0 °C and stimulation of light-induced processes (accumulation of anthocyanins, carotenoids, and chlorophyll, proper development of chloroplasts) at temperatures in the range of 10–14 °C, likely also related to the increased photosensitivity and mediated by gibberellin signaling. Oxford University Press 2019-05-01 2019-03-02 /pmc/articles/PMC6506767/ /pubmed/30825373 http://dx.doi.org/10.1093/jxb/erz096 Text en © The Author(s) 2019. Published by Oxford University Press on behalf of the Society for Experimental Biology. http://creativecommons.org/licenses/by-nc/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com |
spellingShingle | Research Papers Grzybowski, Marcin Adamczyk, Józef Jończyk, Maciej Sobkowiak, Alicja Szczepanik, Jarosław Frankiewicz, Kamil Fronk, Jan Sowiński, Paweł Increased photosensitivity at early growth as a possible mechanism of maize adaptation to cold springs |
title | Increased photosensitivity at early growth as a possible mechanism of maize adaptation to cold springs |
title_full | Increased photosensitivity at early growth as a possible mechanism of maize adaptation to cold springs |
title_fullStr | Increased photosensitivity at early growth as a possible mechanism of maize adaptation to cold springs |
title_full_unstemmed | Increased photosensitivity at early growth as a possible mechanism of maize adaptation to cold springs |
title_short | Increased photosensitivity at early growth as a possible mechanism of maize adaptation to cold springs |
title_sort | increased photosensitivity at early growth as a possible mechanism of maize adaptation to cold springs |
topic | Research Papers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6506767/ https://www.ncbi.nlm.nih.gov/pubmed/30825373 http://dx.doi.org/10.1093/jxb/erz096 |
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