The photosynthetic function analysis for leaf photooxidation in rice
Photooxidative damage causes early leaf senescence and plant cell death. In this study, a light-sensitive rice cultivar, 812HS, and a non-light-sensitive cultivar, 812S, were used to investigate early leaf photooxidation. Leaf tips of 812HS exhibited yellowing under a light intensity of 720 µmol(ph...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Academy of Sciences of the Czech Republic, Institute of Experimental Botany
2023-04-01
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| Series: | Photosynthetica |
| Subjects: | |
| Online Access: | https://ps.ueb.cas.cz/artkey/phs-202301-0005_the-photosynthetic-function-analysis-for-leaf-photooxidation-in-rice.php |
| _version_ | 1827967910423822336 |
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| author | H. XU X. CHU K.J. GOU D.X. JIANG Q.Q. LI C.G. LV Z.P. GAO G.X. CHEN |
| author_facet | H. XU X. CHU K.J. GOU D.X. JIANG Q.Q. LI C.G. LV Z.P. GAO G.X. CHEN |
| author_sort | H. XU |
| collection | DOAJ |
| description | Photooxidative damage causes early leaf senescence and plant cell death. In this study, a light-sensitive rice cultivar, 812HS, and a non-light-sensitive cultivar, 812S, were used to investigate early leaf photooxidation. Leaf tips of 812HS exhibited yellowing under a light intensity of 720 µmol(photon) m-2 s-1, accompanied by a decrease in chlorophyll and carotenoids, but 812S was unaffected. The photosynthetic performance of 812HS was also poorer than that of 812S. The H2O2, O2*-, and malondialdehyde content increased sharply in 812HS, and associated antioxidant enzymes were inhibited. The degradation of core proteins in both PSI and PSII, as well as other photosynthesis-related proteins, was accelerated in 812HS. When shaded [180 µmol(photon) m-2 s-1], 812HS recovered to normal. Therefore, our findings suggested excess light disturbed the balance of ROS metabolism, leading to the destruction of the antioxidant system and photosynthetic organs, and thus triggering the senescence of rice leaves. |
| first_indexed | 2024-04-09T18:13:06Z |
| format | Article |
| id | doaj.art-18822547fa9c49cc92decb16482e5088 |
| institution | Directory Open Access Journal |
| issn | 0300-3604 1573-9058 |
| language | English |
| last_indexed | 2024-04-09T18:13:06Z |
| publishDate | 2023-04-01 |
| publisher | Academy of Sciences of the Czech Republic, Institute of Experimental Botany |
| record_format | Article |
| series | Photosynthetica |
| spelling | doaj.art-18822547fa9c49cc92decb16482e50882023-04-13T10:27:28ZengAcademy of Sciences of the Czech Republic, Institute of Experimental BotanyPhotosynthetica0300-36041573-90582023-04-01611485710.32615/ps.2023.004phs-202301-0005The photosynthetic function analysis for leaf photooxidation in riceH. XU0X. CHU1K.J. GOU2D.X. JIANG3Q.Q. LI4C.G. LV5Z.P. GAO6G.X. CHEN7College of Life Sciences, Nanjing Normal University, 210023 Nanjing, ChinaCollege of Life Sciences, Nanjing Normal University, 210023 Nanjing, ChinaCollege of Life Sciences, Nanjing Normal University, 210023 Nanjing, ChinaCollege of Life Sciences, Nanjing Normal University, 210023 Nanjing, ChinaCollege of Life Sciences, Nanjing Normal University, 210023 Nanjing, ChinaCollege of Life Sciences, Nanjing Normal University, 210023 Nanjing, ChinaCollege of Life Sciences, Nanjing Normal University, 210023 Nanjing, ChinaCollege of Life Sciences, Nanjing Normal University, 210023 Nanjing, ChinaPhotooxidative damage causes early leaf senescence and plant cell death. In this study, a light-sensitive rice cultivar, 812HS, and a non-light-sensitive cultivar, 812S, were used to investigate early leaf photooxidation. Leaf tips of 812HS exhibited yellowing under a light intensity of 720 µmol(photon) m-2 s-1, accompanied by a decrease in chlorophyll and carotenoids, but 812S was unaffected. The photosynthetic performance of 812HS was also poorer than that of 812S. The H2O2, O2*-, and malondialdehyde content increased sharply in 812HS, and associated antioxidant enzymes were inhibited. The degradation of core proteins in both PSI and PSII, as well as other photosynthesis-related proteins, was accelerated in 812HS. When shaded [180 µmol(photon) m-2 s-1], 812HS recovered to normal. Therefore, our findings suggested excess light disturbed the balance of ROS metabolism, leading to the destruction of the antioxidant system and photosynthetic organs, and thus triggering the senescence of rice leaves.https://ps.ueb.cas.cz/artkey/phs-202301-0005_the-photosynthetic-function-analysis-for-leaf-photooxidation-in-rice.phpphotooxidationreactive oxygen speciesriceshadingthylakoid membrane proteins |
| spellingShingle | H. XU X. CHU K.J. GOU D.X. JIANG Q.Q. LI C.G. LV Z.P. GAO G.X. CHEN The photosynthetic function analysis for leaf photooxidation in rice Photosynthetica photooxidation reactive oxygen species rice shading thylakoid membrane proteins |
| title | The photosynthetic function analysis for leaf photooxidation in rice |
| title_full | The photosynthetic function analysis for leaf photooxidation in rice |
| title_fullStr | The photosynthetic function analysis for leaf photooxidation in rice |
| title_full_unstemmed | The photosynthetic function analysis for leaf photooxidation in rice |
| title_short | The photosynthetic function analysis for leaf photooxidation in rice |
| title_sort | photosynthetic function analysis for leaf photooxidation in rice |
| topic | photooxidation reactive oxygen species rice shading thylakoid membrane proteins |
| url | https://ps.ueb.cas.cz/artkey/phs-202301-0005_the-photosynthetic-function-analysis-for-leaf-photooxidation-in-rice.php |
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