Devi Shikha, Sharma Shivesh, Tiwari Ashish, Bhatt Arvind Kumar, Singh Nand Kumar, Singh Monika, Kumar Ajay
Department of Microbiology, Himachal Pradesh University, Summerhill, Shimla 171005, India.
Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Prayagraj 211004, India.
Microorganisms. 2023 Apr 21;11(4):1085. doi: 10.3390/microorganisms11041085.
Multifarious plant growth-promoting strains recovered from rhizospheric soils of the Indo Gangetic plains (IGPs) were identified as MNNITSR2 and MNNITSR18 based on their biochemical characteristics and 16S rDNA gene analysis. Both strains exhibited the ability to produce IAA, siderophores, ammonia, lytic enzymes, HCN production, and phosphate solubilization capability and strongly inhibited the growth of phytopathogens such as and in vitro. In addition, these strains are also able to grow at a high temperature of 50 °C and tolerate up to 10-15% NaCl and 25% PEG 6000. The results of the pot experiment showed that individual seed inoculation and the coinoculation of multifarious plant growth promoting (PGP) strains (SR2 and SR18) in rice fields significantly enhanced plant height, root length volume, tiller numbers, dry weight, and yield compared to the untreated control. This indicates that these strains are potential candidates for use as PGP inoculants/biofertilizers to increase rice productivity under field conditions for IGPs in Uttar Pradesh, India.
从印度河恒河平原（IGPs）根际土壤中分离出的多种促进植物生长的菌株，根据其生化特性和16S rDNA基因分析，被鉴定为MNNITSR2和MNNITSR18。这两种菌株都表现出产生吲哚-3-乙酸（IAA）、铁载体、氨、裂解酶、HCN的能力以及溶解磷的能力，并且在体外强烈抑制了诸如[此处原文缺失病原菌名称]等植物病原体的生长。此外，这些菌株还能够在50°C的高温下生长，耐受高达10 - 15%的氯化钠和25%的聚乙二醇6000（PEG 6000）。盆栽试验结果表明，与未处理的对照相比，在稻田中单独接种种子以及同时接种多种促进植物生长（PGP）菌株（SR2和SR18）显著提高了株高、根长、根体积、分蘖数、干重和产量。这表明这些菌株是有潜力的候选菌株，可作为PGP接种剂/生物肥料用于提高印度北方邦IGPs田间条件下的水稻产量。
