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Physiological effects of the combined stresses of freezing-thawing, acid precipitation and deicing salt on alfalfa seedlings

BACKGROUND: Frequent freeze-thaw phenomena, together with widely used deicing salt and intense acid precipitation, often occur in northeastern China, causing damage to various aspects of plants, such as the permeability of biological membranes, osmotic adjustment, and photosystems. Aiming to explore...

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Autores principales: Bao, Guozhang, Tang, Wenyi, An, Qirui, Liu, Yaoxin, Tian, Jiaqi, Zhao, Nan, Zhu, Saning
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7216480/
https://www.ncbi.nlm.nih.gov/pubmed/32393175
http://dx.doi.org/10.1186/s12870-020-02413-4
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author Bao, Guozhang
Tang, Wenyi
An, Qirui
Liu, Yaoxin
Tian, Jiaqi
Zhao, Nan
Zhu, Saning
author_facet Bao, Guozhang
Tang, Wenyi
An, Qirui
Liu, Yaoxin
Tian, Jiaqi
Zhao, Nan
Zhu, Saning
author_sort Bao, Guozhang
collection PubMed
description BACKGROUND: Frequent freeze-thaw phenomena, together with widely used deicing salt and intense acid precipitation, often occur in northeastern China, causing damage to various aspects of plants, such as the permeability of biological membranes, osmotic adjustment, and photosystems. Aiming to explore the resistance of alfalfa to freezing-thawing (F), acid precipitation (A) and deicing salt (D), this study used Medicago sativa cv. Dongmu-70 as the experimental material, and the contents of malondialdehyde (MDA), soluble protein, soluble sugars, proline and chlorophyll were evaluated. RESULTS: As the temperature decreased, the MDA content in the seedlings of the group under combined stress (A-D-F) increased and was significantly higher than that of group F (by 69.48 ~ 136.40%). Compared with those in the control (CK) group, osmotic substances such as soluble sugars and proline in the treatment groups were higher, while the soluble protein content was lower. The chlorophyll contents in the seedlings of the treatment groups were lower than those of the CK group; however, the chlorophyll content displayed a non-significant change during the free-thaw cycle. CONCLUSION: Injury to the permeability of the biological membranes and photosystems of alfalfa results from stress. Moreover, alfalfa maintains osmotic balance by adaptively increasing the potential of osmotic substances such as soluble sugars and proline. Furthermore, the influence of stress from freezing-thawing and deicing salt is highly substantial, but the combined stresses of acid precipitation with the two factors mentioned above had little effect on the plants.
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spelling pubmed-72164802020-05-18 Physiological effects of the combined stresses of freezing-thawing, acid precipitation and deicing salt on alfalfa seedlings Bao, Guozhang Tang, Wenyi An, Qirui Liu, Yaoxin Tian, Jiaqi Zhao, Nan Zhu, Saning BMC Plant Biol Research Article BACKGROUND: Frequent freeze-thaw phenomena, together with widely used deicing salt and intense acid precipitation, often occur in northeastern China, causing damage to various aspects of plants, such as the permeability of biological membranes, osmotic adjustment, and photosystems. Aiming to explore the resistance of alfalfa to freezing-thawing (F), acid precipitation (A) and deicing salt (D), this study used Medicago sativa cv. Dongmu-70 as the experimental material, and the contents of malondialdehyde (MDA), soluble protein, soluble sugars, proline and chlorophyll were evaluated. RESULTS: As the temperature decreased, the MDA content in the seedlings of the group under combined stress (A-D-F) increased and was significantly higher than that of group F (by 69.48 ~ 136.40%). Compared with those in the control (CK) group, osmotic substances such as soluble sugars and proline in the treatment groups were higher, while the soluble protein content was lower. The chlorophyll contents in the seedlings of the treatment groups were lower than those of the CK group; however, the chlorophyll content displayed a non-significant change during the free-thaw cycle. CONCLUSION: Injury to the permeability of the biological membranes and photosystems of alfalfa results from stress. Moreover, alfalfa maintains osmotic balance by adaptively increasing the potential of osmotic substances such as soluble sugars and proline. Furthermore, the influence of stress from freezing-thawing and deicing salt is highly substantial, but the combined stresses of acid precipitation with the two factors mentioned above had little effect on the plants. BioMed Central 2020-05-11 /pmc/articles/PMC7216480/ /pubmed/32393175 http://dx.doi.org/10.1186/s12870-020-02413-4 Text en © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
spellingShingle Research Article
Bao, Guozhang
Tang, Wenyi
An, Qirui
Liu, Yaoxin
Tian, Jiaqi
Zhao, Nan
Zhu, Saning
Physiological effects of the combined stresses of freezing-thawing, acid precipitation and deicing salt on alfalfa seedlings
title Physiological effects of the combined stresses of freezing-thawing, acid precipitation and deicing salt on alfalfa seedlings
title_full Physiological effects of the combined stresses of freezing-thawing, acid precipitation and deicing salt on alfalfa seedlings
title_fullStr Physiological effects of the combined stresses of freezing-thawing, acid precipitation and deicing salt on alfalfa seedlings
title_full_unstemmed Physiological effects of the combined stresses of freezing-thawing, acid precipitation and deicing salt on alfalfa seedlings
title_short Physiological effects of the combined stresses of freezing-thawing, acid precipitation and deicing salt on alfalfa seedlings
title_sort physiological effects of the combined stresses of freezing-thawing, acid precipitation and deicing salt on alfalfa seedlings
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7216480/
https://www.ncbi.nlm.nih.gov/pubmed/32393175
http://dx.doi.org/10.1186/s12870-020-02413-4
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