<i>Bacillus paralicheniformis</i> 2R5 and its impact on canola growth and N-cycle genes in the rhizosphere

Świątczak, Joanna; Kalwasińska, Agnieszka; Felföldi, Tamás; Brzezinska, Maria Swiontek

doi:10.1093/femsec/fiad093

Cited by 4 publications

(2 citation statements)

References 46 publications

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“…30 It should also be noted that Bacillus, as a PGPR, can promote plant growth to further improve plant health levels. 31 Following the application of B. subtilis FJ3 to chickpea, root length increased by 26.2%, shoot length by 36.5%, fresh weight by 27.7% and dry weight by 129.6%. 12 In our experiment, after treatment with the Bacillus mixture via root irrigation, the growth parameters of ginkgo significantly increased, including fresh weight, dry weight, leaf area, leaf thickness, lateral root number and root biomass.…”

Section: Discussionmentioning

confidence: 99%

Bacillus‐derived consortium enhances Ginkgo biloba's health and resistance to Alternaria tenuissima

Ji,

Liu,

Han

et al. 2024

Pest Management Science

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BACKGROUNDBacillus, as a plant‐growth‐promoting rhizobacteria, can enhance the resistance of plants to phytopathogens. So, in our study, the excellent biocontrol Bacillus strains were screened and used to control ginkgo leaf blight (Alternaria tenuissima).RESULTSFour biocontrol Bacillus strains—Bsa537, Bam337, Bso544, and Bsu503—were selected from 286 isolates based on their capacity to inhibit pathogens and promote plant growth. They significantly improved the resistance of ginkgo to leaf blight, especially the mixture of four Bacillus strains, which contributed to the decrease in lesion areas by more than 40%. Hence, a mixture of Bacillus strains was used to control ginkgo leaf blight in the field. Treatment efficiency varied from 30% to 100% (average 81.5%) and was higher than that of the control (from −2% to −18%, average − 8.5%), the antioxidant capacity of the treated ginkgo was also stronger. Additionally, ginkgo biomass rose as a result of treatment with the Bacillus mixture, including leaf weight, area, thickness, number of lateral roots, and root weight. Furthermore, the Bacillus mixture improved the ginkgo rhizosphere soil by boosting the number of beneficial microorganisms, lowering the number of pathogens, and quickening soil catabolism.BACKGROUNDThe Bacillus mixture improved the health status of ginkgo by protecting it from pathogen attack, promoting its growth, improving microorganism community in rhizosphere. This work closes a technological gap in biological control of ginkgo leaf blight, investigates the application methods of compound Bacillus biofertilizers, and establishes a framework for the population and commercialization of these products.This article is protected by copyright. All rights reserved.

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Section: Discussionmentioning

confidence: 99%

Bacillus‐derived consortium enhances Ginkgo biloba's health and resistance to Alternaria tenuissima

Ji,

Liu,

Han

et al. 2024

Pest Management Science

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“…Canola seedlings were maintained in a day–night cycle of 16h light (100 μmol/m2/s) and a temperature of 22°C. The plants were moistened with an equal amount of water and were harvested after 44 days ( Świątczak et al., 2023b ).…”

Section: Methodsmentioning

confidence: 99%

Plant growth–promoting rhizobacteria: Peribacillus frigoritolerans 2RO30 and Pseudomonas sivasensis 2RO45 for their effect on canola growth under controlled as well as natural conditions

Świątczak,

Kalwasińska,

Brzezinska

2024

Front. Plant Sci.

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Even though canola is one of the most important industrial crops worldwide, it has high nutrient requirements and is susceptible to pests and diseases. Therefore, natural methods are sought to support the development of these plants. One of those methods could be a plant growth–promoting rhizobacteria (PGPR) that have a beneficial effect on plant development. The aim of this study was a genomic comparison of two PGPR strains chosen based on their effect on canola growth: Peribacillus frigoritolerans 2RO30, which stimulated canola growth only in sterile conditions, and Pseudomonas sivasensis 2RO45, which promoted canola growth in both sterile and non-sterile conditions. First of all, six bacterial strains: RO33 (Pseudomonas sp.), RO37 (Pseudomonas poae), RO45 (Pseudomonas kairouanensis), 2RO30 (Peribacillus frigoritolerans), 2RO45 (Pseudomonas sivasensis), and 3RO30 (Pseudomonas migulae), demonstrating best PGP traits in vitro, were studied for their stimulating effect on canola growth under sterile conditions. P. frigoritolerans 2RO30 and P. sivasensis 2RO45 showed the best promoting effect, significantly improving chlorophyll content index (CCI) and roots length compared to the non-inoculated control and to other inoculated seedlings. Under non-sterile conditions, only P. sivasensis 2RO45 promoted the canola growth, significantly increasing CCI compared to the untreated control and to other inoculants. Genome comparison revealed that the genome of P. sivasensis 2RO45 was enriched with additional genes responsible for ACC deaminase (acdA), IAA (trpF, trpG), and siderophores production (fbpA, mbtH, and acrB) compared to 2RO30. Moreover, P. sivasensis 2RO45 showed antifungal effect against all the tested phytopathogens and harbored six more biosynthetic gene clusters (BGC), namely, syringomycin, pyoverdin, viscosin, arylpolyene, lankacidin C, and enterobactin, than P. frigoritolerans 2RO30. These BGCs are well known as antifungal agents; therefore, it can be assumed that these BGCs were responsible for the antifungal activity of P. sivasensis 2RO45 against all plant pathogens. This study is the first report describing P. sivasensis 2RO45 as a canola growth promoter, both under controlled and natural conditions, thus suggesting its application in improving canola yield, by improving nutrient availability, enhancing stress tolerance, and reducing environmental impact of farming practices.

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Metagenomic Analysis to Assess the Impact of Plant Growth-Promoting Rhizobacteria on Peanut (Arachis hypogaea L.) Crop Production and Soil Enzymes and Microbial Diversity

Bigatton,

Verdenelli,

Haro

et al. 2024

J. Agric. Food Chem.

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Peanut production could be increased through plant growth-promoting rhizobacteria (PGPR). In this regard, the present field research aimed at elucidating the impact of PGPR on peanut yield, soil enzyme activity, microbial diversity, and structure. Three PGPR strains (Bacillus velezensis, RI3; Bacillus velezensis, SC6; Pseudomonas psychrophila, P10) were evaluated, along with Bradyrhizobium japonicum (BJ), taken as a control. PGPR increased seed yield by 8%, improving the radiation use efficiency (4−14%). PGPR modified soil enzymes (fluorescein diacetate activity by 17% and dehydrogenase activity by 28%) and microbial abundance (12%). However, PGPR did not significantly alter microbial diversity; nonetheless, it modified the relative abundance of key phyla (Actinobacteria > Proteobacteria > Firmicutes) and genera (Bacillus > Arthrobacter > Pseudomonas). PGPRs modified the relative abundance of genes associated with N-fixation and nitrification while increasing genes related to N-assimilation and Navailability. PGPR improved agronomic traits without altering rhizosphere diversity.

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Bacillus paralicheniformis 2R5 and its impact on canola growth and N-cycle genes in the rhizosphere

Cited by 4 publications

References 46 publications

Bacillus‐derived consortium enhances Ginkgo biloba's health and resistance to Alternaria tenuissima

Bacillus‐derived consortium enhances Ginkgo biloba's health and resistance to Alternaria tenuissima

Plant growth–promoting rhizobacteria: Peribacillus frigoritolerans 2RO30 and Pseudomonas sivasensis 2RO45 for their effect on canola growth under controlled as well as natural conditions

Metagenomic Analysis to Assess the Impact of Plant Growth-Promoting Rhizobacteria on Peanut (Arachis hypogaea L.) Crop Production and Soil Enzymes and Microbial Diversity

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