Two strains of Luteovulum sphaeroides (purple nonsulfur bacteria) promote rice cultivation in saline soils by increasing available phosphorus

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

“…In Vietnam, pineapple is mainly cultivated in the Mekong Delta in acid sulfate soil (ASS) with a pH in the topsoil ranging from 3.84 to 4.23 [2], and this value continues to decrease along with intensive pineapple cultivation [3]. 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].…”

“…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. For example, this bacterial group has been selected and applied as it has high efcacy in improving soil fertility and paddy yield, whereas cultivation in ASS does not have the same properties [6,7,24,25]. Tis is because of the diferences between wetland (rice) and upland (pineapple) crops.…”

“…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].…”

Improvement of Nutrient Uptake, Yield of Black Sesame (Sesamum indicum L.), and Alluvial Soil Fertility in Dyke by Spent Rice Straw from Mushroom Cultivation as Biofertilizer Containing Potent Strains of Rhodopseudomonas palustris

“…Successful applications of the PNSB Rhodopseudomonas spp. as biofertilizers in paddy felds have been reported to improve adverse efects of soil environments such as acidity, salinity, and toxicity [23][24][25][26][27][28][29] to enhance rice growth at diferent stages [25][26][27][28][30][31][32][33] and also rice productivity [29,33]. Additionally, the PNSB promoted the growth of various crops such as sweet herb Stevia rebaudiana [34], cucumber seedling [35,36], and pineapple [37].…”