Rhizobacteria isolated under field first strategy improved chickpea growth and productivity

Baliyan, Nitin; Dheeman, Shrivardhan; Maheshwari, Dinesh Kumar; Dubey, Ramesh Chandra; Vishnoi, Vineet Kumar

doi:10.1007/s42398-018-00042-0

Cited by 28 publications

(8 citation statements)

References 30 publications

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“…The efficiency of beneficial microbial consortia over their single application was well realized in chickpea for plant growth promotion and for alleviating stress conditions. Baliyan et al [35] observed an enhanced grain yield and biological yield of chickpea by 9.86% and 3.49%, respectively after treating with a consortium of Bacillus altitudinis MRN-16 and Pseudomonas chlororaphis MRN-52. Also, a consortium of phosphate solubilizing bacteria Bacillus sp.…”

Section: Tablementioning

confidence: 99%

Streptomyces consortia-mediated plant defense against Fusarium wilt and plant growth-promotion in chickpea

Ankati

Srinivas

Pratyusha

et al. 2021

Microbial Pathogenesis

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Three strains of Streptomyces griseus (CAI-24, CAI-121 and CAI-127) and one strain each of Streptomyces africanus (KAI-32) and Streptomyces coelicolor (KAI-90) were reported by us as biocontrol agents against Fusarium wilt, caused by Fusarium oxysporum f. sp. ciceri (FOC), and as plant growth-promoters (PGP) in chickpea. In the present study, the combined effect of these Streptomyces strains as a consortium were assessed for their biocontrol potential against Fusarium wilt and PGP in chickpea. Based on their compatibility, biocontrol ability and PGP performance, two consortia were assembled, consortium-1 having all the five strains of Streptomyces sp. and consortium-2 having the two promising strains (CAI-127 and KAI-32). Under greenhouse conditions, consortium-1 and consortium-2 were found to reduce the Fusarium wilt disease incidence by 55% and 74%, while under field conditions, these were by 86% and 96% in year-1 and by 54% and 69% in year-2, respectively, when compared to the positive control (only FOC treated). Shoot samples treated with consortia + FOC contained significantly enhanced antioxidant enzymes such as superoxide dismutase, catalase, ascorbate peroxidase, guaiacol peroxidase, glutathione reductase and phenylalanine ammonia-lyase, when compared to the positive control (only FOC treated) or the negative control samples (neither FOC nor consortia treated). When the consortia were evaluated for their PGP traits under field conditions in two chickpea cultivars, JG11 and ICCV2, and in two consecutive years, nodule number was found to enhance up to 25%, nodule weight up to 49%, leaf area up to 37%, leaf weight up to 43%, root weight up to 23%, shoot weight up to 35%, seed weight up to 30%, seed number up to 29%, total dry matter up to 22% and grain yield up to 22% over the un-inoculated control plants. This study had demonstrated that the selected consortium of Streptomyces spp. has a greater potential for biological control of Fusarium wilt disease and PGP in chickpea.

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Section: Tablementioning

confidence: 99%

Streptomyces consortia-mediated plant defense against Fusarium wilt and plant growth-promotion in chickpea

Ankati

Srinivas

Pratyusha

et al. 2021

Microbial Pathogenesis

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“…Our findings strengthen that Bacillus species dominantly exist in the wheat rhizosphere and promote plant growth under salt stress conditions. As WGT1 and WGT11 bacterial isolates exhibited the highest potential to produce plant growth promoting substance’s ability under in vitro assays that is why these bacteria performed considerably better in pot and field experiments, which is largely supported by literature ( Baliyan et al, 2018 ; Sood et al, 2019 ; Panhwar et al, 2020 ; Iqbal et al, 2020 ; Khudhur, 2020 ; Dasila et al, 2022 ; Khan et al, 2022 ). Most potential bacterial isolates, Bacillus cereus WGT1, and Bacillus thuringiensis WGT11 could be used as biofertilizers to produce safe and healthy food in sustainable manner.…”

Section: Discussionmentioning

confidence: 75%

Dominance of Bacillus species in the wheat (Triticum aestivum L.) rhizosphere and their plant growth promoting potential under salt stress conditions

Zahra

Tariq

Abdullah

et al. 2023

PeerJ

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Wheat (Triticum aestivum L.) is a major source of calorific intake in its various forms and is considered one of the most important staple foods. Improved wheat productivity can contribute substantially to addressing food security in the coming decades. Soil salinity is the most serious limiting factor in crop production and fertilizer use efficiency. In this study, 11 bacteria were isolated from wheat rhizosphere and examined for salt tolerance ability. WGT1, WGT2, WGT3, WGT6, WGT8, and WGT11 were able to tolerate NaCl salinity up to 4%. Bacterial isolates were characterized in vitro for plant growth-promoting properties including indole-3-acetic acid (IAA) production, phosphate solubilization, nitrogen fixation, zinc solubilization, biofilm formation, and cellulase-pectinase production. Six isolates, WGT1, WGT3, WGT4, WGT6, WGT8, and WGT9 showed IAA production ability ranging from 0.7–6 µg m/L. WGT8 displayed the highest IAA production. Five isolates, WGT1, WGT2, WGT5, WGT10, and WGT11, demonstrated phosphate solubilization ranging from 1.4–12.3 µg m/L. WGT2 showed the highest phosphate solubilization. Nitrogen fixation was shown by only two isolates, WGT1 and WGT8. Zinc solubilization was shown by WGT1 and WGT11 on minimal media. All isolates showed biofilm formation ability, where WGT4 exhibited maximum potential. Cellulase production ability was noticed in WGT1, WGT2, WGT4, and WGT5, while pectinase production was observed in WGT2 and WGT3. Phylogenetic identification of potential bacteria isolates confirmed their close relationship with various species of the genus Bacillus. WGT1, WGT2, and WGT3 showed the highest similarity with B. cereus, WGT6 with B. tianshenii, WGT8 with B. subtilis, and WGT11 with B. thuringiensis. Biofertilizer characteristics of salt-tolerant potential rhizospheric bacteria were evaluated by inoculating wheat plants under controlled conditions and field experiments. B. cereus WGT1 and B. thuringiensis WGT11 displayed the maximum potential to increase plant growth parameters and enhance grain yield by 37% and 31%, respectively. Potential bacteria of this study can tolerate salt stress, have the ability to produce plant growth promoting substances under salt stress and contribute significantly to enhance wheat grain yield. These bacterial isolates have the potential to be used as biofertilizers for improved wheat production under salinity conditions and contribute to the sustainable agriculture.

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“…Rhizobacteria as soil ecological population is a heterogeneous group of bacteria and beneficial for the improvement of legume crop production (Baliyan et al 2018). Biosurfactantproducing Bacillus with plant growth-promoting traits as a rationale was studied to prove a better alternative for biocontrol agents of phytopathogens, bioinoculants for plant growth promotion and overall improvement in legume crop yield via eco-balanced ways.…”

Section: Discussionmentioning

confidence: 99%

Cyclic siloxane biosurfactant-producing Bacillus cereus BS14 biocontrols charcoal rot pathogen Macrophomina phaseolina and induces growth promotion in Vigna mungo L.

et al. 2021

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Rhizobacteria are vital component of soil-plant interfaces which helps in plant growth responses and disease management. Precisely, the role of biosurfactant production by rhizobacteria in biocontrol mechanisms is underscored. The current study explores the destructive effect of a biosurfactant-producing bacterium Bacillus cereus BS14 on fungal growth under in vitro experiments and showed in vivo reduction of disease severity in pulse crop Vigna mungo. In this study, B. cereus BS14 was observed as plant growth-promoting rhizobacterium (PGPR) based on abilities of production of phytohormone and HCN, phosphate solubilization and biocontrol of Macrophomina phaseolina. The purified biosurfactant from BS14 inhibited the fungal growth by arresting radially growing mycelia. Scanning electron microscope (SEM) study revealed deformities at cellular level in the mycelia of M. phaseolina. The biosurfactant of Bacillus BS14 was identified as cyclic siloxane in GC-MS spectroscopy and FT-IR spectroscopy analyses. In the pot trial studies, B. cereus BS14 proved its efficiency for the growth promotion of Vigna mungo and significantly reduced disease severity index. The present study concludes that biosurfactant of rhizobacterial origin and rhizobacteria can serve for biological control, improvement in crop production and agricultural sustainability. In future, it can be developed as biological control and biofertilizer formulations for legume crops, and commercialized for routine farming practices.

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Rhizobacteria isolated under field first strategy improved chickpea growth and productivity

Cited by 28 publications

References 30 publications

Streptomyces consortia-mediated plant defense against Fusarium wilt and plant growth-promotion in chickpea

Streptomyces consortia-mediated plant defense against Fusarium wilt and plant growth-promotion in chickpea

Dominance of Bacillus species in the wheat (Triticum aestivum L.) rhizosphere and their plant growth promoting potential under salt stress conditions

Cyclic siloxane biosurfactant-producing Bacillus cereus BS14 biocontrols charcoal rot pathogen Macrophomina phaseolina and induces growth promotion in Vigna mungo L.

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