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Photosynthetic response and antioxidative activity of ‘Hass’ avocado cultivar treated with short-term low temperature
To investigate the effects of short-term low temperatures, three-year-old avocado (Persea americana cv. Hass) seedlings were treated with 1, − 2, or − 5 °C for 1 h and subsequently recovered in ambient condition for 24 h. Leaf color changes were investigated with chlorophyll, carotenoid, and phenoli...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9270441/ https://www.ncbi.nlm.nih.gov/pubmed/35804002 http://dx.doi.org/10.1038/s41598-022-15821-3 |
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author | Chung, Sun Woo Rho, Hyungmin Lim, Chan Kyu Jeon, Mi Kyoung Kim, Seolah Jang, Yeon Jin An, Hyun Joo |
author_facet | Chung, Sun Woo Rho, Hyungmin Lim, Chan Kyu Jeon, Mi Kyoung Kim, Seolah Jang, Yeon Jin An, Hyun Joo |
author_sort | Chung, Sun Woo |
collection | PubMed |
description | To investigate the effects of short-term low temperatures, three-year-old avocado (Persea americana cv. Hass) seedlings were treated with 1, − 2, or − 5 °C for 1 h and subsequently recovered in ambient condition for 24 h. Leaf color changes were investigated with chlorophyll, carotenoid, and phenolic contents. Photosynthetic responses were examined using gas exchange analysis. With H(2)O(2) contents as oxidative stresses, enzymatic (ascorbate peroxidase, APX; glutathione reductase, GR; catalase, CAT; peroxidase, POD) and non-enzymatic antioxidant activities were determined using spectrophotometry. Leaves in the avocado seedlings started to be discolored with changes in the contents of chlorophyll a, carotenoids, and phenolics when treated with − 5 °C. However, the H(2)O(2) content was not different in leaves treated with low temperatures. Photosynthetic activities decreased in leaves in the seedlings treated with − 5 °C. Of antioxidant enzymes, APX and GR have high activities in leaves in the seedlings treated with 1 and − 2 °C. In leaves in the seedlings treated with − 5 °C, the activities of all enzymes decreased. Non-enzymatic antioxidant activity was not different among leaves treated with low temperatures. These results indicated that APX and GR would play a critical role in withstanding chilling stress in ‘Hass’ avocado seedlings. However, under lethal temperature, even for a short time, the plants suffered irreversible damage with the breakdown of photosystem and antioxidant system. |
format | Online Article Text |
id | pubmed-9270441 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-92704412022-07-10 Photosynthetic response and antioxidative activity of ‘Hass’ avocado cultivar treated with short-term low temperature Chung, Sun Woo Rho, Hyungmin Lim, Chan Kyu Jeon, Mi Kyoung Kim, Seolah Jang, Yeon Jin An, Hyun Joo Sci Rep Article To investigate the effects of short-term low temperatures, three-year-old avocado (Persea americana cv. Hass) seedlings were treated with 1, − 2, or − 5 °C for 1 h and subsequently recovered in ambient condition for 24 h. Leaf color changes were investigated with chlorophyll, carotenoid, and phenolic contents. Photosynthetic responses were examined using gas exchange analysis. With H(2)O(2) contents as oxidative stresses, enzymatic (ascorbate peroxidase, APX; glutathione reductase, GR; catalase, CAT; peroxidase, POD) and non-enzymatic antioxidant activities were determined using spectrophotometry. Leaves in the avocado seedlings started to be discolored with changes in the contents of chlorophyll a, carotenoids, and phenolics when treated with − 5 °C. However, the H(2)O(2) content was not different in leaves treated with low temperatures. Photosynthetic activities decreased in leaves in the seedlings treated with − 5 °C. Of antioxidant enzymes, APX and GR have high activities in leaves in the seedlings treated with 1 and − 2 °C. In leaves in the seedlings treated with − 5 °C, the activities of all enzymes decreased. Non-enzymatic antioxidant activity was not different among leaves treated with low temperatures. These results indicated that APX and GR would play a critical role in withstanding chilling stress in ‘Hass’ avocado seedlings. However, under lethal temperature, even for a short time, the plants suffered irreversible damage with the breakdown of photosystem and antioxidant system. Nature Publishing Group UK 2022-07-08 /pmc/articles/PMC9270441/ /pubmed/35804002 http://dx.doi.org/10.1038/s41598-022-15821-3 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This 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/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Chung, Sun Woo Rho, Hyungmin Lim, Chan Kyu Jeon, Mi Kyoung Kim, Seolah Jang, Yeon Jin An, Hyun Joo Photosynthetic response and antioxidative activity of ‘Hass’ avocado cultivar treated with short-term low temperature |
title | Photosynthetic response and antioxidative activity of ‘Hass’ avocado cultivar treated with short-term low temperature |
title_full | Photosynthetic response and antioxidative activity of ‘Hass’ avocado cultivar treated with short-term low temperature |
title_fullStr | Photosynthetic response and antioxidative activity of ‘Hass’ avocado cultivar treated with short-term low temperature |
title_full_unstemmed | Photosynthetic response and antioxidative activity of ‘Hass’ avocado cultivar treated with short-term low temperature |
title_short | Photosynthetic response and antioxidative activity of ‘Hass’ avocado cultivar treated with short-term low temperature |
title_sort | photosynthetic response and antioxidative activity of ‘hass’ avocado cultivar treated with short-term low temperature |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9270441/ https://www.ncbi.nlm.nih.gov/pubmed/35804002 http://dx.doi.org/10.1038/s41598-022-15821-3 |
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