Vegetos
(An International Journal of Plant Research & Biotechnology)
(eISSN: 2229-4473)
Greenhouse Gas-reducing Purple Nonsulfur Bacteria Blastochloris sulfoviridis and Rhodobacter sphaeroides Improve Soil Properties, Nutrient Uptake, and Rice Yield Cultivated on Acid Sulfate Soil
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Research Articles | Published: 19 September, 2026
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Keywords: Greenhouse gas-reducing purple nonsulfur bacteria, Methane, Nitrous oxide, Nutrient uptake, Paddy acid sulfate soil, Rice yield
Abstract
The objective of this study was to evaluate the effectiveness of purple nonsulfur bacteria (PNSB) previously characterized for nitrous oxide emission-reducing (NOER-PNSB) Rhodobacter sphaeroides SVG-8, SVG-10A, and WVG-3A, and methane emission-reducing (MER-PNSB) Blastochloris sulfoviridis WHA-9B, R. sphaeroides SPL-4A, and WHA-1A in improving soil properties, nutrient uptakes, and rice yield grown on acid sulfate soil. A completely randomized design pot experiment under greenhouse conditions included four treatments: (i) Control, (ii) NOER-PNSB addition, (iii) MER-PNSB addition, and (iv) (NOER?+?MER)-PNSB addition, with four replications. Addition of NOER-PNSB and MER-PNSB increased soil pH by 0.26–0.34 units, while increasing NH4+, soluble P, and exchangeable K contents by 27.7–45.8%, 36.9–69.3%, and 16.3–20.8%, respectively. The treatments also reduced soil Al3+, Fe2+, and Mn2+ concentrations by 38.0–50.9%, 25.1–29.3%, and 39.2–49.0%, respectively, compared with the control. Simultaneously, NOER-PNSB and MER-PNSB increased total N, P, and K uptake (23.3–29.2%, 29.8–42.5%, and 24.7–29.8%, respectively), reduced total Al, Fe, and Mn uptake (35.5–38.0%, 28.5–37.0%, and 36.2–43.8%, respectively), increased plant height (5.24–12.3%), and grain yield (13.4–22.5%) compared with the control. The combination of NOER-PNSB and MER-PNSB shows potential application in low-emission rice cultivation on acid sulfate soil due to improved soil quality and rice productivity.
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Author Information
Institute of Biotechnology and Food Technology, Can Tho University, Can Tho, Vietnam