Utilization of Phototrophic Bacteria to Enhance Carbon Sequestration in Rice Paddy
Rice paddies are a major source of agricultural greenhouse gas emissions, primarily caused by the proliferation of anaerobic, methanogenic bacteria during prolonged inundation. Phototrophic bacteria utilize light energy for metabolism and are potential candidates for carbon and nitrogen fixation, an...
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2024-08-01
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| author | Alyssa Katsuyama Wang Kun-Yi Kao Yang-Cheng Kuo Rey-May Liou |
| author_facet | Alyssa Katsuyama Wang Kun-Yi Kao Yang-Cheng Kuo Rey-May Liou |
| author_sort | Alyssa Katsuyama Wang |
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| description | Rice paddies are a major source of agricultural greenhouse gas emissions, primarily caused by the proliferation of anaerobic, methanogenic bacteria during prolonged inundation. Phototrophic bacteria utilize light energy for metabolism and are potential candidates for carbon and nitrogen fixation, and reduction of methane gas emissions. We investigated the effect of applying the phototrophic bacterium <i>Rhodopseudomonas palustris</i> (PNSB) during the cropping period on soil organic carbon (SOC) and methane emissions for second-crop rice in the Tainan Guantian region. In the experimental group, PNSB was applied five times during the rice cultivation period. Compared to the control group, the experimental group demonstrated a significant reduction in methane emissions, especially in the tillering stage, where emissions averaged 37.26 ± 12.97 g-CH<sub>4</sub>/m<sup>2</sup>/season compared to 49.48 ± 25.06 g-CH<sub>4</sub>/m<sup>2</sup>/season of the control group. Over the entire growing season, the experimental group reduced the emission of 3.05 Mg·CO<sub>2</sub>e/ha. Additionally, administering PNSB improved soil carbon sequestration, from 4.89 tons-C/ha in the control group to 17.45 tons-C/ha. The phototrophic bacterium PNSB was beneficial for soil carbon sequestration and reducing greenhouse gas emissions. However, further research is required to optimize the methodology of applying phototrophic bacteria for agricultural purposes. |
| format | Article |
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| institution | Kabale University |
| issn | 2673-4591 |
| language | English |
| publishDate | 2024-08-01 |
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| spelling | doaj-art-b9d3c5c3c7004d799fe7e9245bbd42c52024-12-27T14:24:19ZengMDPI AGEngineering Proceedings2673-45912024-08-017413010.3390/engproc2024074030Utilization of Phototrophic Bacteria to Enhance Carbon Sequestration in Rice PaddyAlyssa Katsuyama Wang0Kun-Yi Kao1Yang-Cheng Kuo2Rey-May Liou3Taipei American School, Taipei 111, TaiwanDepartment of Environmental Engineering and Science, Chia-Nan University of Pharmacy and Science, Tainan 717, TaiwanBioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu 300, TaiwanDepartment of Environmental Engineering and Science, Chia-Nan University of Pharmacy and Science, Tainan 717, TaiwanRice paddies are a major source of agricultural greenhouse gas emissions, primarily caused by the proliferation of anaerobic, methanogenic bacteria during prolonged inundation. Phototrophic bacteria utilize light energy for metabolism and are potential candidates for carbon and nitrogen fixation, and reduction of methane gas emissions. We investigated the effect of applying the phototrophic bacterium <i>Rhodopseudomonas palustris</i> (PNSB) during the cropping period on soil organic carbon (SOC) and methane emissions for second-crop rice in the Tainan Guantian region. In the experimental group, PNSB was applied five times during the rice cultivation period. Compared to the control group, the experimental group demonstrated a significant reduction in methane emissions, especially in the tillering stage, where emissions averaged 37.26 ± 12.97 g-CH<sub>4</sub>/m<sup>2</sup>/season compared to 49.48 ± 25.06 g-CH<sub>4</sub>/m<sup>2</sup>/season of the control group. Over the entire growing season, the experimental group reduced the emission of 3.05 Mg·CO<sub>2</sub>e/ha. Additionally, administering PNSB improved soil carbon sequestration, from 4.89 tons-C/ha in the control group to 17.45 tons-C/ha. The phototrophic bacterium PNSB was beneficial for soil carbon sequestration and reducing greenhouse gas emissions. However, further research is required to optimize the methodology of applying phototrophic bacteria for agricultural purposes.https://www.mdpi.com/2673-4591/74/1/30phototrophic bacteriacarbon sequestrationpaddy fields |
| spellingShingle | Alyssa Katsuyama Wang Kun-Yi Kao Yang-Cheng Kuo Rey-May Liou Utilization of Phototrophic Bacteria to Enhance Carbon Sequestration in Rice Paddy Engineering Proceedings phototrophic bacteria carbon sequestration paddy fields |
| title | Utilization of Phototrophic Bacteria to Enhance Carbon Sequestration in Rice Paddy |
| title_full | Utilization of Phototrophic Bacteria to Enhance Carbon Sequestration in Rice Paddy |
| title_fullStr | Utilization of Phototrophic Bacteria to Enhance Carbon Sequestration in Rice Paddy |
| title_full_unstemmed | Utilization of Phototrophic Bacteria to Enhance Carbon Sequestration in Rice Paddy |
| title_short | Utilization of Phototrophic Bacteria to Enhance Carbon Sequestration in Rice Paddy |
| title_sort | utilization of phototrophic bacteria to enhance carbon sequestration in rice paddy |
| topic | phototrophic bacteria carbon sequestration paddy fields |
| url | https://www.mdpi.com/2673-4591/74/1/30 |
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