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首页> 外文期刊>Applied Microbiology and Biotechnology >Evaluation of the effects of different liquid inoculant formulations on the survival and plant-growth-promoting efficiency of Rhodopseudomonas palustris strain PS3
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Evaluation of the effects of different liquid inoculant formulations on the survival and plant-growth-promoting efficiency of Rhodopseudomonas palustris strain PS3

机译：评价不同液体孕育剂制剂对大红假单胞菌PS3的存活和促进植物生长的作用

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摘要

Biofertilizers can help improve soil quality, promote crop growth, and sustain soil health. The photosynthetic bacterium Rhodopseudomonas palustris strain PS3 (hereafter, PS3), which was isolated from Taiwanese paddy soil, can not only exert beneficial effects on plant growth but also enhance the efficiency of nutrient uptake from applied fertilizer. To produce this elite microbial isolate for practical use, product development and formulation are needed to permit the maintenance of the high quality of the inoculant during storage. The aim of this study was to select a suitable formulation that improves the survival and maintains the beneficial effects of the PS3 inoculant. Six additives (alginate, polyethylene glycol [PEG], polyvinylpyrrolidone-40 [PVP], glycerol, glucose, and horticultural oil) were used in liquid-based formulations, and their capacities for maintaining PS3 cell viability during storage in low, medium, and high temperature ranges were evaluated. Horticultural oil (0.5 %) was chosen as a potential additive because it could maintain a relatively high population and conferred greater microbial vitality under various storage conditions. Furthermore, the growth-promoting effects exerted on Chinese cabbage by the formulated inoculants were significantly greater than those of the unformulated treatments. The fresh and dry weights of the shoots were significantly increased, by 10-27 and 22-40 %, respectively. Horticultural oil is considered a safe, low-cost, and easy-to-process material, and this formulation would facilitate the practical use of strain PS3 in agriculture.
机译：生物肥料可以帮助改善土壤质量，促进作物生长并维持土壤健康。从台湾稻田土壤中分离出来的光合细菌大红假单胞菌菌株PS3（以下称为PS3）不仅可以对植物生长产生有益的作用，还可以提高施肥对养分的吸收效率。为了生产这种实用的精制微生物分离物，需要进行产品开发和配制，以在储存过程中保持高质量的孕育剂。这项研究的目的是选择一种合适的制剂，以提高其存活率并保持PS3接种剂的有益作用。在液基制剂中使用了六种添加剂（藻酸盐，聚乙二醇[PEG]，聚乙烯吡咯烷酮40 [PVP]，甘油，葡萄糖和园艺油），它们在低，中和低温条件下储存时可保持PS3细胞活力。评估了高温范围。选择了园艺油（0.5％）作为潜在的添加剂，因为它可以维持相对较高的种群并在各种存储条件下赋予更大的微生物活力。此外，配制的接种剂对大白菜的生长促进作用明显大于未配制的处理剂。芽的鲜重和干重分别显着增加了10-27％和22-40％。园艺用油被认为是一种安全，低成本且易于加工的材料，这种配方将有助于PS3菌株在农业中的实际使用。

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