Application of nitrogen-fixing purple non-sulfur bacteria in improving nitrogen uptake, growth, and yield of rice grown on extremely saline soil under greenhouse conditions
Highly saline soils negatively affect crop growth, especially rice. Although chemical approaches can be used, they damage the environment and the sustainability of the agriculture. Thus, a biological candidate should be assessed. Therefore, the study evaluated the impact of nitrogen (N)-fixing purpl...
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De Gruyter
2025-03-01
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| Series: | Open Agriculture |
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| Online Access: | https://doi.org/10.1515/opag-2025-0425 |
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| author | Anh Nguyen Hoang Quang Huynh Thanh Huong Bui Thi Thien Quang Le Thanh Thu Le Thi My Trong Nguyen Duc Nguyen Tran Trong Khoi Xuan Ly Ngoc Thanh Phong Ngo Thanh Khuong Nguyen Quoc |
| author_facet | Anh Nguyen Hoang Quang Huynh Thanh Huong Bui Thi Thien Quang Le Thanh Thu Le Thi My Trong Nguyen Duc Nguyen Tran Trong Khoi Xuan Ly Ngoc Thanh Phong Ngo Thanh Khuong Nguyen Quoc |
| author_sort | Anh Nguyen Hoang |
| collection | DOAJ |
| description | Highly saline soils negatively affect crop growth, especially rice. Although chemical approaches can be used, they damage the environment and the sustainability of the agriculture. Thus, a biological candidate should be assessed. Therefore, the study evaluated the impact of nitrogen (N)-fixing purple non-sulfur bacteria (PNSB) strains on improving soil properties, nutrient uptake, growth, and rice yield on highly saline soil in My Xuyen district, Soc Trang province. The N-fixing PNSB were hypothesized to boost soil nutrient availability and reduce soil salinity, leading to a greater rice growth and yield. A pot experiment was arranged in a completely randomized block design with two factors, including four N applying rates (100, 75, 50, and 0%) and N-fixing PNSB Rhodobacter sphaeroides (no added bacteria, single bacterial strain R. sphaeroides S01, single bacterial strain R. sphaeroides S06, and a mixture of two bacterial strains R. sphaeroides S01 and S06). The results showed that adding single strains S01, S06, and mixed strains S01 and S06 improved plant height by 4.02–10.4% (the first season) and 3.86–6.84% (the second season). Under the application of the mixture of two strains S01 and S06, the soil NH4
+ increased by 31.8–50.5%, while the soil Na+ decreased by 16.0–25.7% in both seasons. From there, the total N uptake was also improved by 34.9–73.8% and the total Na uptake went down by 19.1–26.5% via two seasons. This led to greater rice growth and yield traits, such as the number of panicles per pot, the number of seeds per panicle, and the filled seed rate in both seasons. Ultimately, the rice grain yield was improved by 10.2–14.8% by the N-fixing PNSB under greenhouse condition. In conclusion, the current study successfully provided a potent N-fixer as a candidate for improvements of saline rice growth and soil health. Thus, this liquid biofertilizer should be further tested under field trails. |
| format | Article |
| id | doaj-art-dfcfef048bbe4cb090e33dbd7ba94ffe |
| institution | DOAJ |
| issn | 2391-9531 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | De Gruyter |
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| series | Open Agriculture |
| spelling | doaj-art-dfcfef048bbe4cb090e33dbd7ba94ffe2025-08-20T02:41:36ZengDe GruyterOpen Agriculture2391-95312025-03-01101pp. 3115410.1515/opag-2025-0425Application of nitrogen-fixing purple non-sulfur bacteria in improving nitrogen uptake, growth, and yield of rice grown on extremely saline soil under greenhouse conditionsAnh Nguyen Hoang0Quang Huynh Thanh1Huong Bui Thi Thien2Quang Le Thanh3Thu Le Thi My4Trong Nguyen Duc5Nguyen Tran Trong Khoi6Xuan Ly Ngoc Thanh7Phong Ngo Thanh8Khuong Nguyen Quoc9Faculty of Crop Science, College of Agriculture, Can Tho University, Can Tho, VietnamFaculty of Crop Science, College of Agriculture, Can Tho University, Can Tho, VietnamFaculty of Crop Science, College of Agriculture, Can Tho University, Can Tho, VietnamFaculty of Crop Science, College of Agriculture, Can Tho University, Can Tho, VietnamFaculty of Crop Science, College of Agriculture, Can Tho University, Can Tho, VietnamFaculty of Crop Science, College of Agriculture, Can Tho University, Can Tho, VietnamFaculty of Crop Science, College of Agriculture, Can Tho University, Can Tho, VietnamAn Giang University, Vietnam National University, Ho Chi Minh City, An Giang, VietnamDepartment of Biology, College of Natural Sciences, Can Tho University, Can Tho, VietnamFaculty of Crop Science, College of Agriculture, Can Tho University, Can Tho, VietnamHighly saline soils negatively affect crop growth, especially rice. Although chemical approaches can be used, they damage the environment and the sustainability of the agriculture. Thus, a biological candidate should be assessed. Therefore, the study evaluated the impact of nitrogen (N)-fixing purple non-sulfur bacteria (PNSB) strains on improving soil properties, nutrient uptake, growth, and rice yield on highly saline soil in My Xuyen district, Soc Trang province. The N-fixing PNSB were hypothesized to boost soil nutrient availability and reduce soil salinity, leading to a greater rice growth and yield. A pot experiment was arranged in a completely randomized block design with two factors, including four N applying rates (100, 75, 50, and 0%) and N-fixing PNSB Rhodobacter sphaeroides (no added bacteria, single bacterial strain R. sphaeroides S01, single bacterial strain R. sphaeroides S06, and a mixture of two bacterial strains R. sphaeroides S01 and S06). The results showed that adding single strains S01, S06, and mixed strains S01 and S06 improved plant height by 4.02–10.4% (the first season) and 3.86–6.84% (the second season). Under the application of the mixture of two strains S01 and S06, the soil NH4 + increased by 31.8–50.5%, while the soil Na+ decreased by 16.0–25.7% in both seasons. From there, the total N uptake was also improved by 34.9–73.8% and the total Na uptake went down by 19.1–26.5% via two seasons. This led to greater rice growth and yield traits, such as the number of panicles per pot, the number of seeds per panicle, and the filled seed rate in both seasons. Ultimately, the rice grain yield was improved by 10.2–14.8% by the N-fixing PNSB under greenhouse condition. In conclusion, the current study successfully provided a potent N-fixer as a candidate for improvements of saline rice growth and soil health. Thus, this liquid biofertilizer should be further tested under field trails.https://doi.org/10.1515/opag-2025-0425liquid biofertilizernitrogen fixationpnsbrhodobacter sphaeroidessalt intrusion |
| spellingShingle | Anh Nguyen Hoang Quang Huynh Thanh Huong Bui Thi Thien Quang Le Thanh Thu Le Thi My Trong Nguyen Duc Nguyen Tran Trong Khoi Xuan Ly Ngoc Thanh Phong Ngo Thanh Khuong Nguyen Quoc Application of nitrogen-fixing purple non-sulfur bacteria in improving nitrogen uptake, growth, and yield of rice grown on extremely saline soil under greenhouse conditions Open Agriculture liquid biofertilizer nitrogen fixation pnsb rhodobacter sphaeroides salt intrusion |
| title | Application of nitrogen-fixing purple non-sulfur bacteria in improving nitrogen uptake, growth, and yield of rice grown on extremely saline soil under greenhouse conditions |
| title_full | Application of nitrogen-fixing purple non-sulfur bacteria in improving nitrogen uptake, growth, and yield of rice grown on extremely saline soil under greenhouse conditions |
| title_fullStr | Application of nitrogen-fixing purple non-sulfur bacteria in improving nitrogen uptake, growth, and yield of rice grown on extremely saline soil under greenhouse conditions |
| title_full_unstemmed | Application of nitrogen-fixing purple non-sulfur bacteria in improving nitrogen uptake, growth, and yield of rice grown on extremely saline soil under greenhouse conditions |
| title_short | Application of nitrogen-fixing purple non-sulfur bacteria in improving nitrogen uptake, growth, and yield of rice grown on extremely saline soil under greenhouse conditions |
| title_sort | application of nitrogen fixing purple non sulfur bacteria in improving nitrogen uptake growth and yield of rice grown on extremely saline soil under greenhouse conditions |
| topic | liquid biofertilizer nitrogen fixation pnsb rhodobacter sphaeroides salt intrusion |
| url | https://doi.org/10.1515/opag-2025-0425 |
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