Use of potent acid resistant strains of Rhodopseudomonas spp. in Mn-contaminated acidic paddies to produce safer rice and improve soil fertility

Khương, Nguyễn Quốc; Kantachote, Duangporn; Thúc, Lê Vĩnh; Huu, Tran Ngoc; Nhan, Tran Chi; Nguyện, Phan Chí; Thu, Le Thi My; Van, TranThi Bich; Xuan, NguyenThi Thanh; Xuan, Ly Ngoc Thanh; Xuan, Do Thi

doi:10.1016/j.still.2022.105393

Cited by 18 publications

(16 citation statements)

References 31 publications

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“…Moreover, biofertilizers containing rhizosphere bacteria can produce phytohormones, including acetic acid, auxins, and cytokinins, to support the plant development [46,47]. Tus, PNSB can be used as plant growth promoting bacteria to supply IAA, ALA for plant [14,24]. N and P are elements participating in cell division, root development, root traits, anatomy modifcations, and root hair density, resulting in improvement in photosynthesis and plant growth [48][49][50][51].…”

Section: Improvement Of Growth and Agronomic Traits And Fruit Yield O...mentioning

confidence: 99%

“…Although pineapple has been recorded with high adaptation to ASS [4], the soil characteristics of low pH and high aluminum (Al), iron (Fe), hydrogen sulfde, and organic acids result in low availability of P by their immobilization with Al 3+ and Fe 2+ to form insoluble compounds as AlPO 4 • H 2 O and FePO 4 • H 2 O [5][6][7][8][9]. Moreover, high acidity and toxicity inhibited plant growth changed the structure and diversity of microorganism [2,[10][11][12][13][14]. P plays a vital role in pineapple growth; this means that P is defcient, and plant growth and quality are afected adversely [15].…”

Section: Introductionmentioning

confidence: 99%

“…Specifcally, PNSB have a great potential for solubilizing P to support plant growth [2,7]. PNSB also can produce metabolites that enable plants to overcome the stresses as H + , Al 3+ , and Fe 2+ in ASS [6,14]. It means that PNSB can be evolutionarily adapted in diferent ecological systems [23], particularly in ASS.…”

Section: Introductionmentioning

confidence: 99%

“…Tis is because of the diferences between wetland (rice) and upland (pineapple) crops. However, PNSB can be grown under both aerobic and anaerobic environments [2,6,7,13,14,24,25] to improve crop yield [23]. Besides, PNSB were efective in providing plant growth regulators such as IAA and siderophores [13]and compounds such as 5-aminolevulinic acid (ALA) and exopolymeric substances (EPS) to help pineapple development in ASS [13,26,27], and reducing Fe 2+ , Al 3+ , and Mn 2+ contamination [2,13,14].…”

Section: Introductionmentioning

confidence: 99%

“…However, PNSB can be grown under both aerobic and anaerobic environments [2,6,7,13,14,24,25] to improve crop yield [23]. Besides, PNSB were efective in providing plant growth regulators such as IAA and siderophores [13]and compounds such as 5-aminolevulinic acid (ALA) and exopolymeric substances (EPS) to help pineapple development in ASS [13,26,27], and reducing Fe 2+ , Al 3+ , and Mn 2+ contamination [2,13,14]. Terefore, this study aimed to (i) assess purple nonsulfur bacteria (PNSB) possessing the highest (P) solubilizing capacity and (ii) determine the efcacy of PNSB biofertilizers in the improving soil quality, P uptake, growth, and yield of pineapple cultivated in ASS.…”

Section: Introductionmentioning

confidence: 99%

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Potential of Phosphorus Solubilizing Purple Nonsulfur Bacteria Isolated from Acid Sulfate Soil in Improving Soil Property, Nutrient Uptake, and Yield of Pineapple (Ananas comosus L. Merrill) under Acidic Stress

Huu

Giau

Ngan

et al. 2022

Applied and Environmental Soil Science

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This study aimed to (i) evaluate purple nonsulfur bacteria (PNSB) strains possessing the highest phosphorus (P) solubilizing capacity in field and (ii) determine the efficacy of PNSB biofertilizers in improving soil quality, P uptake, growth, and yield of pineapple cultivated in acid sulfate soil (ASS). A field experiment was conducted in a completely randomized block design with two factors, including the first factor as P fertilizer levels (0, 50, 75, and 100% P) based on recommended fertilizer formula (RFF) and the second factor as supplementation of biofertilizers containing P solubilizing PNSB (no inoculated PNSB, Rhodobacter sphaeroides W48, R. sphaeroides W42, and a mixture of R. sphaeroides W48 and W42). The results indicated that the supplementation of PNSB biofertilizers led to an increase of 25.3–33.9% in soluble P concentration in soil compared to control treatment. Among the selected PNSB strains, R. sphaeroides W42 and a mixture of the PNSB in biofertilizers solubilized all insoluble P fractions (Fe-P, Al-P, and Ca-P) and strain W48 in biofertilizers for Fe-P and Al-P. Furthermore, the supplementation of biofertilizers from R. sphaeroides W48 and W42 individually and their mixture raised plant height by 3.56–4.10% and available P concentration by 25.3–33.9%. Total P uptake in pineapple treatments with biofertilizers from mixed PNSB was 42.9% higher than that in the control treatment ( p < 0.05 ). Application of mixed PNSB strains can reduce 25% P of chemical fertilizer, but the pineapple yield rose over 12.1%. Both R. sphaeroides W48 and W42 are potent for use as crop yield enhancers to obtain the sustainable pineapple cultivation under acidic stress.

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