Effects of elevated carbon dioxide on plant growth and leaf photosynthesis of annual ryegrass along a phosphorus deficiency gradient
IntroductionSoil phosphorus (P) deficiency limits plant growth and productivity in grassland ecosystems and may moderate the growth-promoting effects of “carbon dioxide (CO2) fertilization effect”.MethodsTo evaluate the interactive effects of these two factors on the growth and physiology for annual...
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Frontiers Media S.A.
2023-11-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2023.1271262/full |
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| author | Fei Li Chunlin He Zhijie Chang Chao Ma Jingjin Yu Liang Liu Yunxin Zhang Lihua Hao |
| author_facet | Fei Li Chunlin He Zhijie Chang Chao Ma Jingjin Yu Liang Liu Yunxin Zhang Lihua Hao |
| author_sort | Fei Li |
| collection | DOAJ |
| description | IntroductionSoil phosphorus (P) deficiency limits plant growth and productivity in grassland ecosystems and may moderate the growth-promoting effects of “carbon dioxide (CO2) fertilization effect”.MethodsTo evaluate the interactive effects of these two factors on the growth and physiology for annual ryegrass (Lolium multiflorum Lam.), plants were grown in controlled growth chambers with a range of P supply (0.004, 0.012, 0.02, 0.06, 0.1 and 0.5 mM) under two levels of CO2 (400 and 800 μmol mol-1, respectively).ResultsElevated [CO2] dramatically increased the aboveground biomass and net photosynthetic rates of annual ryegrass by 14.5% and 25.3% under sufficient P supply (0.5 mM), respectively, whereas decreased the belowground biomass and net photosynthetic rates under lower P supply of P0.004, P0.02, and P0.06. Two-way ANOVA results showed that CO2 × P (p < 0.001) significantly affected stomatal traits, leaf photosynthesis and biomass. The stimulation of growth and photosynthesis by elevated CO2 concentration (e[CO2]) was reduced or highly suppressed, indicating that the sensitivity of annual ryegrass to P deficiency was enhanced under e[CO2].DiscussionThese results indicated that P limitation may offset the positive effects of e[CO2] on plant growth by altering stomatal traits, leaf photochemical processes and biochemical composition in annual ryegrass. |
| first_indexed | 2024-03-09T14:45:06Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-03-09T14:45:06Z |
| publishDate | 2023-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-0f8f9452cd424402951809cde236b4182023-11-27T06:52:50ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2023-11-011410.3389/fpls.2023.12712621271262Effects of elevated carbon dioxide on plant growth and leaf photosynthesis of annual ryegrass along a phosphorus deficiency gradientFei Li0Chunlin He1Zhijie Chang2Chao Ma3Jingjin Yu4Liang Liu5Yunxin Zhang6Lihua Hao7School of Water Conservancy and Hydropower, Hebei University of Engineering, Handan, ChinaJiangsu Provincial Flood Control and Drought Relief Center, Nanjing, ChinaCollege of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, ChinaSchool of Water Conservancy and Hydropower, Hebei University of Engineering, Handan, ChinaSchool of Agro-Grassland Science, Nanjing Agricultural University, Nanjing, ChinaSchool of Water Conservancy and Hydropower, Hebei University of Engineering, Handan, ChinaSchool of Water Conservancy and Hydropower, Hebei University of Engineering, Handan, ChinaSchool of Water Conservancy and Hydropower, Hebei University of Engineering, Handan, ChinaIntroductionSoil phosphorus (P) deficiency limits plant growth and productivity in grassland ecosystems and may moderate the growth-promoting effects of “carbon dioxide (CO2) fertilization effect”.MethodsTo evaluate the interactive effects of these two factors on the growth and physiology for annual ryegrass (Lolium multiflorum Lam.), plants were grown in controlled growth chambers with a range of P supply (0.004, 0.012, 0.02, 0.06, 0.1 and 0.5 mM) under two levels of CO2 (400 and 800 μmol mol-1, respectively).ResultsElevated [CO2] dramatically increased the aboveground biomass and net photosynthetic rates of annual ryegrass by 14.5% and 25.3% under sufficient P supply (0.5 mM), respectively, whereas decreased the belowground biomass and net photosynthetic rates under lower P supply of P0.004, P0.02, and P0.06. Two-way ANOVA results showed that CO2 × P (p < 0.001) significantly affected stomatal traits, leaf photosynthesis and biomass. The stimulation of growth and photosynthesis by elevated CO2 concentration (e[CO2]) was reduced or highly suppressed, indicating that the sensitivity of annual ryegrass to P deficiency was enhanced under e[CO2].DiscussionThese results indicated that P limitation may offset the positive effects of e[CO2] on plant growth by altering stomatal traits, leaf photochemical processes and biochemical composition in annual ryegrass.https://www.frontiersin.org/articles/10.3389/fpls.2023.1271262/fullelevated CO2 concentrationP limitationstomatal traitsleaf photosynthesisbiochemical |
| spellingShingle | Fei Li Chunlin He Zhijie Chang Chao Ma Jingjin Yu Liang Liu Yunxin Zhang Lihua Hao Effects of elevated carbon dioxide on plant growth and leaf photosynthesis of annual ryegrass along a phosphorus deficiency gradient Frontiers in Plant Science elevated CO2 concentration P limitation stomatal traits leaf photosynthesis biochemical |
| title | Effects of elevated carbon dioxide on plant growth and leaf photosynthesis of annual ryegrass along a phosphorus deficiency gradient |
| title_full | Effects of elevated carbon dioxide on plant growth and leaf photosynthesis of annual ryegrass along a phosphorus deficiency gradient |
| title_fullStr | Effects of elevated carbon dioxide on plant growth and leaf photosynthesis of annual ryegrass along a phosphorus deficiency gradient |
| title_full_unstemmed | Effects of elevated carbon dioxide on plant growth and leaf photosynthesis of annual ryegrass along a phosphorus deficiency gradient |
| title_short | Effects of elevated carbon dioxide on plant growth and leaf photosynthesis of annual ryegrass along a phosphorus deficiency gradient |
| title_sort | effects of elevated carbon dioxide on plant growth and leaf photosynthesis of annual ryegrass along a phosphorus deficiency gradient |
| topic | elevated CO2 concentration P limitation stomatal traits leaf photosynthesis biochemical |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2023.1271262/full |
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