Response of photomorphogenesis and photosynthetic properties of sweet pepper seedlings exposed to mixed red and blue light
Various light spectra, especially red (RL) and blue light (BL), have great effects on physiological processes and growth of plants. Previously, we revealed that the plant photomorphogenesis and photosynthesis of sweet pepper was significantly altered under BL or mixed RL and BL. The present study ai...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-02-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2022.984051/full |
| _version_ | 1828040182446686208 |
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| author | Yan Li Yan Li Guofeng Xin Qinghua Shi Fengjuan Yang Min Wei Min Wei |
| author_facet | Yan Li Yan Li Guofeng Xin Qinghua Shi Fengjuan Yang Min Wei Min Wei |
| author_sort | Yan Li |
| collection | DOAJ |
| description | Various light spectra, especially red (RL) and blue light (BL), have great effects on physiological processes and growth of plants. Previously, we revealed that the plant photomorphogenesis and photosynthesis of sweet pepper was significantly altered under BL or mixed RL and BL. The present study aimed to elucidate how mixed RL and BL influences plant photosynthesis during photomorphogenesis. We examined the growth, plant morphology, photosynthetic response of sweet pepper seedlings under monochromatic RL, BL, different ratios of mixed RL and BL (9R1B, 6R1B, 3R1B, 1R1B, 1R3B) with the same photosynthetic photon flux density of 300 μmol·m-2·s-1. White light (WL) were used as a control. The findings showed that the elongation of hypocotyl and first internode as well as leaf expansion were all stimulated by RL, while significantly restrained by BL compared with WL. Conversely, the leaf development, biomass accumulation and photosynthetic properties were inhibited by RL but promoted by BL. Additionally, compared with WL and other treatments, 3R1B could significantly improve the net photosynthetic rate, gas exchange, photosynthetic electron transport capacity, photochemical efficiency, shoot and root biomass accumulation. Furthermore, seedlings grew robustly and exhibited the greatest value of seedling index when exposed to this treatment. Overall, these results suggested that pepper seedlings grown under 3R1B performed better, possibly due to the more balanced light spectrum. It was more conducive to improve the plant photomorphogenesis and photosynthesis of sweet pepper, and a higher biomass accumulation and energy utilization efficiency could be achieved simultaneously under this mixed light spectrum. |
| first_indexed | 2024-04-10T16:53:09Z |
| format | Article |
| id | doaj.art-7dbf6499b93647f09a44d47025d3e497 |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-04-10T16:53:09Z |
| publishDate | 2023-02-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-7dbf6499b93647f09a44d47025d3e4972023-02-07T11:18:00ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2023-02-011310.3389/fpls.2022.984051984051Response of photomorphogenesis and photosynthetic properties of sweet pepper seedlings exposed to mixed red and blue lightYan Li0Yan Li1Guofeng Xin2Qinghua Shi3Fengjuan Yang4Min Wei5Min Wei6College of Horticultural Science and Engineering, Shandong Agricultural University, Tai’an, Shandong, ChinaScientific Observing and Experimental Station of Environment Controlled Agricultural Engineering in Huang-Huai-Hai Region, Ministry of Agriculture, Tai’an, Shandong, ChinaCollege of Horticultural Science and Engineering, Shandong Agricultural University, Tai’an, Shandong, ChinaCollege of Horticultural Science and Engineering, Shandong Agricultural University, Tai’an, Shandong, ChinaCollege of Horticultural Science and Engineering, Shandong Agricultural University, Tai’an, Shandong, ChinaCollege of Horticultural Science and Engineering, Shandong Agricultural University, Tai’an, Shandong, ChinaScientific Observing and Experimental Station of Environment Controlled Agricultural Engineering in Huang-Huai-Hai Region, Ministry of Agriculture, Tai’an, Shandong, ChinaVarious light spectra, especially red (RL) and blue light (BL), have great effects on physiological processes and growth of plants. Previously, we revealed that the plant photomorphogenesis and photosynthesis of sweet pepper was significantly altered under BL or mixed RL and BL. The present study aimed to elucidate how mixed RL and BL influences plant photosynthesis during photomorphogenesis. We examined the growth, plant morphology, photosynthetic response of sweet pepper seedlings under monochromatic RL, BL, different ratios of mixed RL and BL (9R1B, 6R1B, 3R1B, 1R1B, 1R3B) with the same photosynthetic photon flux density of 300 μmol·m-2·s-1. White light (WL) were used as a control. The findings showed that the elongation of hypocotyl and first internode as well as leaf expansion were all stimulated by RL, while significantly restrained by BL compared with WL. Conversely, the leaf development, biomass accumulation and photosynthetic properties were inhibited by RL but promoted by BL. Additionally, compared with WL and other treatments, 3R1B could significantly improve the net photosynthetic rate, gas exchange, photosynthetic electron transport capacity, photochemical efficiency, shoot and root biomass accumulation. Furthermore, seedlings grew robustly and exhibited the greatest value of seedling index when exposed to this treatment. Overall, these results suggested that pepper seedlings grown under 3R1B performed better, possibly due to the more balanced light spectrum. It was more conducive to improve the plant photomorphogenesis and photosynthesis of sweet pepper, and a higher biomass accumulation and energy utilization efficiency could be achieved simultaneously under this mixed light spectrum.https://www.frontiersin.org/articles/10.3389/fpls.2022.984051/fullsweet pepperlight spectrumgrowthplant morphologyphotosynthesis |
| spellingShingle | Yan Li Yan Li Guofeng Xin Qinghua Shi Fengjuan Yang Min Wei Min Wei Response of photomorphogenesis and photosynthetic properties of sweet pepper seedlings exposed to mixed red and blue light Frontiers in Plant Science sweet pepper light spectrum growth plant morphology photosynthesis |
| title | Response of photomorphogenesis and photosynthetic properties of sweet pepper seedlings exposed to mixed red and blue light |
| title_full | Response of photomorphogenesis and photosynthetic properties of sweet pepper seedlings exposed to mixed red and blue light |
| title_fullStr | Response of photomorphogenesis and photosynthetic properties of sweet pepper seedlings exposed to mixed red and blue light |
| title_full_unstemmed | Response of photomorphogenesis and photosynthetic properties of sweet pepper seedlings exposed to mixed red and blue light |
| title_short | Response of photomorphogenesis and photosynthetic properties of sweet pepper seedlings exposed to mixed red and blue light |
| title_sort | response of photomorphogenesis and photosynthetic properties of sweet pepper seedlings exposed to mixed red and blue light |
| topic | sweet pepper light spectrum growth plant morphology photosynthesis |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2022.984051/full |
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