Characterization of phosphate solubilizing plant growth promoting rhizobacterium Lysinibacillus pakistanensis strain PCPSMR15 isolated from Oryza sativa

Abstract

Highlights Lysinibacillus pakistanensis PCPSMR15, a potential bacterium isolated from rice rhizosphere is capable of solubilizing inorganic phosphorus from insoluble compounds. This bacterium exhibited halo tolerant ability and also demonstrated qualitative production of various enzymes of biotechnological and industrial applications. Efficient producer of Indole acetic acid and promoted plant growth in terms of length of root, shoot and leaf. L. pakistanensis PCPSMR15 with remarkable plant growth promoting traits, thus may play an important role in increasing the soil fertility and development of eco-friendly sustainable agriculture.

Efficiency of Combining Strains Ag87 (Bacillus megaterium) and Ag94 (Lysinibacillus sp.) as Phosphate Solubilizers and Growth Promoters in Maize

“…Lysinibacillus species, previously described as members of the genus Bacillus [ 46 ], have 37 described species ( , accessed on 11 April 2022). Most species of this genus are isolated from soil environments, and several works have demonstrated their potential as PSB-PGPR [ 47 , 48 , 49 ]. Evaluating several strains from the rice rhizosphere, Lelapalli et al [ 49 ] found that Lysinibacillus pakistanensis PCPSMR15 has a high capacity for phosphate solubilization and growth promotion in beans, indicating that it is an important strain in the development of a commercial inoculant.…”

Plant growth promoting characterization of indigenous phosphate solubilizing rhizobacteria and effects on germination of some crops in Vietnam

“…These results were consistent with many previous literatures. For example, Lelapalli et al (2021) had shown that PSB strains were able or not to produce amylase and/or lipase. Walpola et al (2012) reported no PSB strains producing protease and chitinase.…”

“…In addition to phosphate solubilization, PSB also possesses many other plant growth-promoting activities. Other plant growth-promoting activities reported in PSB have included nitrogen fixation (Mei et al, 2021), K solubilization (Aliyat et al, 2022), production of indole acetic acid (Kadmiri et al, 2018;Mei et al, 2021), HCN (Aliyat et al, 2022), generation of siderophores (Mei et al, 2021;Aliyat et al, 2022), secreting extracellular hydrolytic enzymes such as amyalse, cellulase, lipase, pectinase, and protease (Lelapalli et al, 2021), and aminocyclopropane-1-carboxylate deaminase activity (Mei et al, 2021). These activities have made PSBusing strategies and results diverse and complex.…”

Characterization of a novel root-associated diazotrophic rare PGPR taxa, Aquabacter pokkalii sp. nov., isolated from pokkali rice: new insights into the plant-associated lifestyle and brackish adaptation

“…The rhizosphere-associated bacteria that confer health benefits to plants are collectively called plant growth-promoting rhizobacteria (PGPR). The well-characterized beneficial functions of PGPR include 1) increasing the availability of essential nutrients inaccessible to the plants, such as nitrogen via fixation of atmospheric nitrogen [ 2 ] and phosphate via solubilization of insoluble soil phosphates through organic acid production [ 3 ], 2) promote plant growth and development via the production of phytohormones [ 4 ], 3) protection against plant pathogens through secreting different classes of antimicrobial substances or by eliciting plant defense hormones [ 5 ], and 4) provide enhanced protection against abiotic stress such as salinity and drought through scavenging plant stress ethylene with the help of 1-aminocyclopropane 1-dicarboxylate (ACC) deaminase [ 6 ]. Despite having huge potential in sustainable agriculture, the current knowledge about the PGPR and its potential beneficial interactions across a wide range of plants, including crops of brackish-associated environments, an interface between marine and terrestrial ecosystems that are agriculturally important, is very limited.…”