Cold acclimation alleviates photosynthetic inhibition and oxidative damage induced by cold stress in citrus seedlings
Cold stress seriously inhibits plant growth and development, geographical distribution, and yield stability of plants. Cold acclimation (CA) is an important strategy for modulating cold stress, but the mechanism by which CA induces plant resistance to cold stress is still not clear. The purpose of t...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2023-12-01
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| Series: | Plant Signaling & Behavior |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/15592324.2023.2285169 |
| _version_ | 1827379147249287168 |
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| author | Chao Xu Yuting Wang Huidong Yang Yuqing Tang Buchun Liu Xinlong Hu Zhongdong Hu |
| author_facet | Chao Xu Yuting Wang Huidong Yang Yuqing Tang Buchun Liu Xinlong Hu Zhongdong Hu |
| author_sort | Chao Xu |
| collection | DOAJ |
| description | Cold stress seriously inhibits plant growth and development, geographical distribution, and yield stability of plants. Cold acclimation (CA) is an important strategy for modulating cold stress, but the mechanism by which CA induces plant resistance to cold stress is still not clear. The purpose of this study was to investigate the effect of CA treatment on the cold resistance of citrus seedlings under cold stress treatment, and to use seedlings without CA treatment as the control (NA). The results revealed that CA treatment increased the content of photosynthetic pigments under cold stress, whereas cold stress greatly reduced the value of gas exchange parameters. CA treatment also promoted the activity of Rubisco and FBPase, as well as led to an upregulation of the transcription levels of photosynthetic related genes (rbcL and rbcS)，compared to the NA group without cold stress. In addition, cold stress profoundly reduced photochemical chemistry of photosystem II (PSII), especially the maximum quantum efficiency (Fv/Fm) in PSII. Conversely, CA treatment improved the chlorophyll a fluorescence parameters, thereby improving electron transfer efficiency. Moreover, under cold stress, CA treatment alleviated oxidative stress damage to cell membranes by inhibiting the concentration of H2O2 and MDA, enhancing the activities of superoxide dismutase (SOD), catalase (CAT), ascorbic acid peroxidase (APX) and glutathione reductase (GR), accompanied by an increase in the expression level of antioxidant enzyme genes (CuZnSOD1, CAT1, APX and GR). Additionally, CA also increased the contents of abscisic acid (ABA) and salicylic acid (SA) in plants under cold stress. Overall, we concluded that CA treatment suppressed the negative effects of cold stress by enhancing photosynthetic performance, antioxidant enzymes functions and plant hormones contents. |
| first_indexed | 2024-03-08T13:07:57Z |
| format | Article |
| id | doaj.art-11de11c4156d4f2f9c17eeed04647362 |
| institution | Directory Open Access Journal |
| issn | 1559-2316 1559-2324 |
| language | English |
| last_indexed | 2024-03-08T13:07:57Z |
| publishDate | 2023-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Plant Signaling & Behavior |
| spelling | doaj.art-11de11c4156d4f2f9c17eeed046473622024-01-18T15:58:23ZengTaylor & Francis GroupPlant Signaling & Behavior1559-23161559-23242023-12-0118110.1080/15592324.2023.22851692285169Cold acclimation alleviates photosynthetic inhibition and oxidative damage induced by cold stress in citrus seedlingsChao Xu0Yuting Wang1Huidong Yang2Yuqing Tang3Buchun Liu4Xinlong Hu5Zhongdong Hu6Jiangxi Academy of Agricultural SciencesJiangxi Academy of Agricultural SciencesJiangxi Academy of Agricultural SciencesJiangxi Academy of Agricultural SciencesCAASJiangxi Academy of Agricultural SciencesJiangxi Academy of Agricultural SciencesCold stress seriously inhibits plant growth and development, geographical distribution, and yield stability of plants. Cold acclimation (CA) is an important strategy for modulating cold stress, but the mechanism by which CA induces plant resistance to cold stress is still not clear. The purpose of this study was to investigate the effect of CA treatment on the cold resistance of citrus seedlings under cold stress treatment, and to use seedlings without CA treatment as the control (NA). The results revealed that CA treatment increased the content of photosynthetic pigments under cold stress, whereas cold stress greatly reduced the value of gas exchange parameters. CA treatment also promoted the activity of Rubisco and FBPase, as well as led to an upregulation of the transcription levels of photosynthetic related genes (rbcL and rbcS)，compared to the NA group without cold stress. In addition, cold stress profoundly reduced photochemical chemistry of photosystem II (PSII), especially the maximum quantum efficiency (Fv/Fm) in PSII. Conversely, CA treatment improved the chlorophyll a fluorescence parameters, thereby improving electron transfer efficiency. Moreover, under cold stress, CA treatment alleviated oxidative stress damage to cell membranes by inhibiting the concentration of H2O2 and MDA, enhancing the activities of superoxide dismutase (SOD), catalase (CAT), ascorbic acid peroxidase (APX) and glutathione reductase (GR), accompanied by an increase in the expression level of antioxidant enzyme genes (CuZnSOD1, CAT1, APX and GR). Additionally, CA also increased the contents of abscisic acid (ABA) and salicylic acid (SA) in plants under cold stress. Overall, we concluded that CA treatment suppressed the negative effects of cold stress by enhancing photosynthetic performance, antioxidant enzymes functions and plant hormones contents.http://dx.doi.org/10.1080/15592324.2023.2285169citruscold acclimationcold stressoxidative stressphotosynthesis |
| spellingShingle | Chao Xu Yuting Wang Huidong Yang Yuqing Tang Buchun Liu Xinlong Hu Zhongdong Hu Cold acclimation alleviates photosynthetic inhibition and oxidative damage induced by cold stress in citrus seedlings Plant Signaling & Behavior citrus cold acclimation cold stress oxidative stress photosynthesis |
| title | Cold acclimation alleviates photosynthetic inhibition and oxidative damage induced by cold stress in citrus seedlings |
| title_full | Cold acclimation alleviates photosynthetic inhibition and oxidative damage induced by cold stress in citrus seedlings |
| title_fullStr | Cold acclimation alleviates photosynthetic inhibition and oxidative damage induced by cold stress in citrus seedlings |
| title_full_unstemmed | Cold acclimation alleviates photosynthetic inhibition and oxidative damage induced by cold stress in citrus seedlings |
| title_short | Cold acclimation alleviates photosynthetic inhibition and oxidative damage induced by cold stress in citrus seedlings |
| title_sort | cold acclimation alleviates photosynthetic inhibition and oxidative damage induced by cold stress in citrus seedlings |
| topic | citrus cold acclimation cold stress oxidative stress photosynthesis |
| url | http://dx.doi.org/10.1080/15592324.2023.2285169 |
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