Influence of Bacteria of the Genus Pseudomonas on Leguminous Plants and Their Joint Application for Bioremediation of Oil Contaminated Soils

Abstract

The modern approach to the creation of biological products to stimulate plant growth is based on the study of specific inter-bacterial interactions. This study describes the impact that the introduction of strains of the genus Pseudomonas has on annual and perennial leguminous plants and the ecosystem of the leguminous plant—the indigenous microbial community. The objects of research under the conditions of vegetation experiments were plants of field peas (Pisum sativum L.), white lupine (Lupinus albus L.), chickpea (Cicer arietinum L.), alfalfa (Medicago sativa subsp. varia (Martyn) Arcang.), and white sweet clover (Melilotus albus Medik.). For the treatment of plant seeds, a liquid culture of strains of growth-stimulating bacteria Pseudomonas koreensis IB-4, and P. laurentiana ANT 17 was used. The positive effect of the studied strains on the germination, growth and development of plants was established. There was no inhibitory effect of inoculants on rhizobia; on the contrary, an increase in nodule formation was observed. The possibility of recultivation of oil-contaminated soil using chickpea and alfalfa as phytomeliorants and growth-stimulating strains P. koreensis IB-4, P. laurentiana ANT 17 as inoculants was evaluated. It is proved that seed treatment improved the morphological parameters of plants, as well as the efficiency of oil destruction.

Metagenome-based diversity and functional analysis of culturable microbes in sugarcane

“…Among sugarcane's endophyte compositions, Pseudomonadota dominated the sugarcane tissues. Pseudomonadota contains a wide range of bacteria with growth-promoting effects on plants, and they usually produce phytohormones, solubilise minerals, fix nitrogen and control plant diseases (25,26). In the present study, we found that the average relative abundance of Pseudomonadota isolated from the leaves of S. robustum and S. officinarum reached 97.9% and 98.1%, respectively.…”

Properties of Potential Plant-Growth-Promoting Bacteria and Their Effect on Wheat Growth Promotion (Triticum aestivum) and Soil Characteristics

“…The ability of Pseudomonas sp. to enhance plant growth has been attributed to various mechanisms, such as phytohormone production, nutrient solubilization, HCN, siderophore secretion, and biocontrol activity [28]. Pseudomonas koreensis is a species whose representatives are repeatedly mentioned in relation to the possibility of nitrogen fixation and phytohormone production [29], as well as phosphate solubilization, ammonium, and siderophore production [30].…”

Combined Use of a Bacterial Consortium and Early-Colonizing Plants as a Treatment for Soil Recovery after Fire: A Model Based on Los Guájares (Granada, Spain) Wildfire

“…Even though the in vitro germination tests with each of the consortium strains did not show an evident improvement in the germination rate (data not shown), the combined effect of these bacteria caused an improvement in the soil structure, which may better retain the moisture, as well as a reduction in the pH of the soil, which could explain the improvement in germination. In addition, despite not having much information about plant growth-promotion in these species, some of the strains included in the consortium, such as Pseudomonas koreensis , Paenibacillus lautus , and Paenarthrobacter nitroguajacolicus , have been described as growth promoters in other legumes, which could explain the improvement in development in both microcosm conditions [ 86 , 87 , 88 ].…”