Assessment of Rice Associated Bacterial Ability to Enhance Rice Seed Germination and Rice Growth Promotion

Gholamalizadeh, R.; Khodakaramian, Gholam; Ebadi, Ali

doi:10.1590/1678-4324-2017160410

Cited by 25 publications

(14 citation statements)

References 35 publications

(34 reference statements)

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“…Therefore, results clearly indicate that germination and growth of rice seeds reinforce the role of Bacillus spp. as a plant growth promoter, as well as the findings of some previous studies (Naseer et al 2020;Liu et al 2020;Gholamalizadeh et al 2017).…”

Section: Discussionsupporting

confidence: 68%

Control of Magnaporthe oryzae and Rice Growth Promotion by Bacillus subtilis JN005

Zhu

Zhou

Ren

et al. 2021

J Plant Growth Regul

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It is quite important to develop the microorganism resources with biocontrol capacity for rice blast. This study evaluated Bacillus subtilis JN005 for growth promotion and biocontrol efficacy against Magnaporthe oryzae. Results showed that rice seeds treated with 1 × 107 cfu/mL suspension of B. subtilis JN005 had 16% germination energy, 14% germination rate, 15% germination index, and 270% vigor index compared to those treated with sterile water (control). In pot experiments, the JN005 strain-treated rice plants exhibited notable increase in plant height, root length, stem circumference, and fresh weight, as well as higher concentration of chlorophyll a, chlorophyll b, and total chlorophyll in rice leaves. Rice leaves inoculated with the JN005 strain resulted in increased activities of defense-related enzymes, including peroxidase (POD), phenylalanine ammonialyase (PAL), superoxide dismutase (SOD), and catalase (CAT) compared to the water and the M. oryzae-inoculated treatments. In vitro inoculated rice leaves with 1 × 107 cfu/mL bacterial suspension compared to sterile water or control treatment exhibited lower disease incidence in the curative and preventive groups by 79% and 76%, respectively. Field experiment showed that after spraying with 1 × 107 cfu/mL bacterial suspension, efficacy rates on controlling rice blast on plants were (56.82 ± 1.12)% and (58.39 ± 3.05)% at seedling and maturity stages, respectively, and that rice production yield was (524.40 ± 17.88) g/m2. Therefore, B. subtilis JN005 could be a promising biological control agent for rice blast, thereby warranting further investigation of its efficacy.

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Section: Discussionsupporting

confidence: 68%

Control of Magnaporthe oryzae and Rice Growth Promotion by Bacillus subtilis JN005

Zhu

Zhou

Ren

et al. 2021

J Plant Growth Regul

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“…cereus were dominant in mixture treatment. B. idriensis was the most abundant Bacillus of A. adenophora , which have the potential abilities to promote seedling root growth, desorbing phosphorus and producing indoleacetic acid and ammonia ( Afzal et al, 2016 ; Gholamalizadeh et al, 2017 ). B. cereus enhanced the soil microbial biomass, enzyme activity, N 2 -fixation, and P solubilization ( Nayak et al, 2018 ; Azeem et al, 2021 ).…”

Section: Discussionmentioning

confidence: 99%

Rhizospheric Bacillus-Facilitated Effects on the Growth and Competitive Ability of the Invasive Plant Ageratina adenophora

Chen

et al. 2022

Front. Plant Sci.

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The rhizospheric microbial community affects the population establishment of invasive plants in introduced areas, among which Bacillus has numerous functions in promoting plant growth. This study isolated and enriched the Bacillus community in the rhizospheric soil of the invasive plant Ageratina adenophora and the native accompanying plant Rabdosia amethystoides. The effects of these rhizospheric Bacillus communities on the growth and competition of A. adenophora and R. amethystoides were evaluated in pot experiments. The results showed that the number and diversity of Bacillus in the rhizospheric soil of A. adenophora were higher than those of R. amethystoides (A. adenophora: 122 strains in soil, 16 Bacillus taxa; R. amethystoides: 88 strains in soil, 9 Bacillus taxa). After Bacillus inoculation of A. adenophora in a pot experiment, Bacillus idriensis, Bacillus toyonensis and Bacillus cereus were accumulated in the rhizospheric of A. adenophora, which significantly increased the nitrate nitrogen (NO3–-N) content in the soil and the total carbon and nitrogen concentrations in A. adenophora in the mixed treatment. The selective accumulation of Bacillus enhanced the competitive advantage of A. adenophora over the native accompanying plant; the corrected index of relative competition intensity of A. adenophora-inoculated Bacillus reached double that of the uninoculated treatment, and the growth of native plants was greatly suppressed under mixed planting. Our study confirmed that invasion of A. adenophora can lead to the accumulation of specific Bacillus taxa in the rhizospheric soil, which in turn can increase the competitive advantage of A. adenophora.

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“…Phytostimulation by indole compounds production and increase nutrients availability by phosphates solubilizing and siderophores production are some of the mechanisms used by Pantoea to promote the rice and wheat growth (Gholamalizadeh et al, 2017;Tahir et al, 2020). The biofilms formation enhances the rhizosphere colonization and beneficial effects of microbial metabolites on the plant growth (Ansari & Ahmad, 2018).…”

Section: Discussionmentioning

confidence: 99%

New bacteria genera associated with rice (Oryza sativa L.) in Cuba promote the crop growth

et al. 2022

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Introduction. The rice cultivar INCA LP-7 is one of the eleven principal cultivars in Cuba due to their high yield potential, salinity tolerance, and pathogens resistance. However, there are not reports about the isolation, identification, and characterization of bacteria associated to this cultivar that promote its growth. Objective. To select promising bacteria from the rhizosphere of the INCA LP-7 rice cultivar to promote the crop growth. Materials and methods. The investigation was carried out in 2015 and 2016 at the Instituto Nacional de Ciencias Agropecuarias, Cuba and Instituto de Investigaciones Biologicas Clemente Estable, Uruguay. The 16SrNA gene of bacteria associated with the INCA LP-7 rice cultivar was isolated and identified by sequencing. Characterization was performed as plant growth promoting bacteria and the effect of bacterial inoculation on rice growth was studied. Results. Eleven rizopheric bacteria were isolated from rice plants of the INCA LP-7cultivar. A phylogenetic analysis showed that for the first time in Cuba Pantoea, Acinetobacter, and Mitsuaria genera were reported associated with rice. Rhizobium and Enterobacter genera were also informed as rhizospheric bacteria of INCA LP-7 rice cultivar. Some isolates solubilize inorganic phosphates and potassium, produce siderophores and indolic compound, had exo-celulase and protease activity and formed biofilm. The inoculation of isolates belonging to Pantoea genus produced an increase in height, root length, and biomass of rice plants under greenhouse conditions. Conclusions. Pantoea sp. GG1 and Pantoea sp. GG2 were the most promising strains for the inoculation of the INCA LP-7 rice cultivar. This is the first report in Cuba that focuses on the characterization of the bacterial microbiota part associated to Cuban rice cultivar INCA LP-7 and reports bacteria of the Pantoea genus as crop growth promoters.

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Assessment of Rice Associated Bacterial Ability to Enhance Rice Seed Germination and Rice Growth Promotion

Abstract: ABSTRACT

Cited by 25 publications

References 35 publications

Control of Magnaporthe oryzae and Rice Growth Promotion by Bacillus subtilis JN005

Control of Magnaporthe oryzae and Rice Growth Promotion by Bacillus subtilis JN005

Rhizospheric Bacillus-Facilitated Effects on the Growth and Competitive Ability of the Invasive Plant Ageratina adenophora

New bacteria genera associated with rice (Oryza sativa L.) in Cuba promote the crop growth

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