دورية أكاديمية
Enhancing leaf photosynthesis from altered chlorophyll content requires optimal partitioning of nitrogen
| العنوان: | Enhancing leaf photosynthesis from altered chlorophyll content requires optimal partitioning of nitrogen |
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| المؤلفون: | Zhou, Zhenxiang, Struik, Paul C., Gu, Junfei, van der Putten, Peter E.L., Wang, Zhiqin, Yin, Xinyou, Yang, Jianchang |
| المصدر: | Crop and Environment 2 (2023) 1 ; ISSN: 2773-126X |
| سنة النشر: | 2023 |
| المجموعة: | Wageningen UR (University & Research Centre): Digital Library |
| مصطلحات موضوعية: | Chlorophyll content, Light energy utilisation efficiency, Nitrogen partitioning, Non-photochemical quenching, Oryza sativa, Photosynthetic capacity |
| الوصف: | While optimising leaf chlorophyll content ([CHL]) has been proposed as a relevant means to manipulate canopy light penetration and canopy photosynthesis, effects of modifying [CHL] on leaf photosynthesis are yet to be investigated thoroughly. A greenhouse experiment and a field experiment were conducted involving rice genotypes of different genetic backgrounds and their leaf-colour variants. Leaf photosynthesis was more influenced by alteration to yellow-leaf than to stay-green cases. Higher specific leaf area and stomatal conductance were observed in two yellow-leaf variants, while only one yellow-leaf variant showed significantly increased Rubisco carboxylation capacity (Vcmax), maximum electron transport rate (Jmax), and photosynthetic nitrogen-use efficiency (PNUE). Model analysis indicated that reducing leaf [CHL] decreased the energy loss via non-photochemical quenching, but improving Vcmax, Jmax, and PNUE would require an improved nitrogen distribution pattern within the leaf. Label-free quantitative proteomics confirmed that an increased investment of nitrogen in Cyt b6/f and Rubisco was observed in the yellow-leaf variant of the genetic background with improved Vcmax, Jmax, and PNUE, but not in the other background. Our results suggest that reducing [CHL] can improve leaf photosynthesis only if the saved nitrogen is optimally distributed to proteins that are more rate-limiting to photosynthesis. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| العلاقة: | https://edepot.wur.nl/639469Test; https://research.wur.nl/en/publications/enhancing-leaf-photosynthesis-from-altered-chlorophyll-content-reTest |
| DOI: | 10.1016/j.crope.2023.02.001 |
| الإتاحة: | https://doi.org/10.1016/j.crope.2023.02.001Test https://research.wur.nl/en/publications/enhancing-leaf-photosynthesis-from-altered-chlorophyll-content-reTest |
| حقوق: | https://creativecommons.org/licenses/by-nc-nd/4.0Test/ ; Wageningen University & Research |
| رقم الانضمام: | edsbas.FEBB236F |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.crope.2023.02.001 |
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