Effects of Shading Nets on Reactive Oxygen Species Accumulation, Photosynthetic Changes, and Associated Physiochemical Attributes in Promoting Cold-Induced Damage in <i>Camellia sinensis</i> (L.) Kuntze
Climate change and extreme weather affect tea growing. A competitive tea market needs quick, short-term solutions. This study evaluates the effects of various shade nets under mild and extreme cold stress on tea leaf physiology, photosynthetic alterations, antioxidant activities, and physiochemical...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Horticulturae |
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| Online Access: | https://www.mdpi.com/2311-7524/8/7/637 |
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| author | Shah Zaman Jiazhi Shen Shuangshuang Wang Yu Wang Zhaotang Ding Dapeng Song Hui Wang Shibo Ding Xu Pang Mengqi Wang |
| author_facet | Shah Zaman Jiazhi Shen Shuangshuang Wang Yu Wang Zhaotang Ding Dapeng Song Hui Wang Shibo Ding Xu Pang Mengqi Wang |
| author_sort | Shah Zaman |
| collection | DOAJ |
| description | Climate change and extreme weather affect tea growing. A competitive tea market needs quick, short-term solutions. This study evaluates the effects of various shade nets under mild and extreme cold stress on tea leaf physiology, photosynthetic alterations, antioxidant activities, and physiochemical characteristics. Tea plants were treated with SD0 (0% non-shading), SD1 (30% shading), SD2 (60% shading), and SD3 (75% shading). The 30%, 60%, and 75% shade nets shielded tea leaves from cold damage and reduced leaf injury during mild and extreme cold conditions compared with SD0% non-shading. Shading regulates photochemical capacity and efficiency and optimizes chlorophyll a and b, chlorophyll, and carotenoid contents. Moreover, carbon and nitrogen increased during mild cold and decreased in extreme cold conditions. Shading promoted antioxidant activity and physiochemical attributes. In fact, under 60% of shade, superoxide dismutase, peroxidase, catalase, and ω-3 alpha-linolenic acid were improved compared with SD0% non-shading during both mild and extreme cold conditions. From these findings, we hypothesized that the effect of different shades played an important role in the protection of tea leaves and alleviated the defense mechanism for “Zhong Cha 102” during exposure to a cold environment. |
| first_indexed | 2024-03-09T11:49:45Z |
| format | Article |
| id | doaj.art-b5748655f22a4dad9b21662aa2141075 |
| institution | Directory Open Access Journal |
| issn | 2311-7524 |
| language | English |
| last_indexed | 2024-03-09T11:49:45Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Horticulturae |
| spelling | doaj.art-b5748655f22a4dad9b21662aa21410752023-11-30T23:16:59ZengMDPI AGHorticulturae2311-75242022-07-018763710.3390/horticulturae8070637Effects of Shading Nets on Reactive Oxygen Species Accumulation, Photosynthetic Changes, and Associated Physiochemical Attributes in Promoting Cold-Induced Damage in <i>Camellia sinensis</i> (L.) KuntzeShah Zaman0Jiazhi Shen1Shuangshuang Wang2Yu Wang3Zhaotang Ding4Dapeng Song5Hui Wang6Shibo Ding7Xu Pang8Mengqi Wang9Tea Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, ChinaTea Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, ChinaTea Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, ChinaTea Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, ChinaTea Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, ChinaRizhao Tea Research Institute, Rizhao 276800, ChinaRizhao Tea Research Institute, Rizhao 276800, ChinaRizhao Tea Research Institute, Rizhao 276800, ChinaRizhao Tea Research Institute, Rizhao 276800, ChinaRizhao Tea Research Institute, Rizhao 276800, ChinaClimate change and extreme weather affect tea growing. A competitive tea market needs quick, short-term solutions. This study evaluates the effects of various shade nets under mild and extreme cold stress on tea leaf physiology, photosynthetic alterations, antioxidant activities, and physiochemical characteristics. Tea plants were treated with SD0 (0% non-shading), SD1 (30% shading), SD2 (60% shading), and SD3 (75% shading). The 30%, 60%, and 75% shade nets shielded tea leaves from cold damage and reduced leaf injury during mild and extreme cold conditions compared with SD0% non-shading. Shading regulates photochemical capacity and efficiency and optimizes chlorophyll a and b, chlorophyll, and carotenoid contents. Moreover, carbon and nitrogen increased during mild cold and decreased in extreme cold conditions. Shading promoted antioxidant activity and physiochemical attributes. In fact, under 60% of shade, superoxide dismutase, peroxidase, catalase, and ω-3 alpha-linolenic acid were improved compared with SD0% non-shading during both mild and extreme cold conditions. From these findings, we hypothesized that the effect of different shades played an important role in the protection of tea leaves and alleviated the defense mechanism for “Zhong Cha 102” during exposure to a cold environment.https://www.mdpi.com/2311-7524/8/7/637<i>Camellia sinensis</i>shading netscold damageantioxidant activitiesphysiochemical propertieslogical traits |
| spellingShingle | Shah Zaman Jiazhi Shen Shuangshuang Wang Yu Wang Zhaotang Ding Dapeng Song Hui Wang Shibo Ding Xu Pang Mengqi Wang Effects of Shading Nets on Reactive Oxygen Species Accumulation, Photosynthetic Changes, and Associated Physiochemical Attributes in Promoting Cold-Induced Damage in <i>Camellia sinensis</i> (L.) Kuntze Horticulturae <i>Camellia sinensis</i> shading nets cold damage antioxidant activities physiochemical properties logical traits |
| title | Effects of Shading Nets on Reactive Oxygen Species Accumulation, Photosynthetic Changes, and Associated Physiochemical Attributes in Promoting Cold-Induced Damage in <i>Camellia sinensis</i> (L.) Kuntze |
| title_full | Effects of Shading Nets on Reactive Oxygen Species Accumulation, Photosynthetic Changes, and Associated Physiochemical Attributes in Promoting Cold-Induced Damage in <i>Camellia sinensis</i> (L.) Kuntze |
| title_fullStr | Effects of Shading Nets on Reactive Oxygen Species Accumulation, Photosynthetic Changes, and Associated Physiochemical Attributes in Promoting Cold-Induced Damage in <i>Camellia sinensis</i> (L.) Kuntze |
| title_full_unstemmed | Effects of Shading Nets on Reactive Oxygen Species Accumulation, Photosynthetic Changes, and Associated Physiochemical Attributes in Promoting Cold-Induced Damage in <i>Camellia sinensis</i> (L.) Kuntze |
| title_short | Effects of Shading Nets on Reactive Oxygen Species Accumulation, Photosynthetic Changes, and Associated Physiochemical Attributes in Promoting Cold-Induced Damage in <i>Camellia sinensis</i> (L.) Kuntze |
| title_sort | effects of shading nets on reactive oxygen species accumulation photosynthetic changes and associated physiochemical attributes in promoting cold induced damage in i camellia sinensis i l kuntze |
| topic | <i>Camellia sinensis</i> shading nets cold damage antioxidant activities physiochemical properties logical traits |
| url | https://www.mdpi.com/2311-7524/8/7/637 |
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