Effect of Indigenous Plant Growth-Promoting Rhizobacteria on Wheat (<i>Triticum Aestivum</i>L.) Productivity and Soil Nutrients

Sood, Gaurav; Kaushal, Rajesh; Panwar, G. S.; Dhiman, Meenakshi

doi:10.1080/00103624.2018.1556282

Cited by 19 publications

(6 citation statements)

References 17 publications

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“…61 All isolated strains produced siderophores in this study, with activity of the nine PSBs ranging from 11.29 to 64.50 units. The siderophore production activity of ten bacterial isolates from wheat (rhizosphere soil and root endosphere) ranged from 31.71 to 53.71 units, 62 which is similar to the current study.…”

Section: Discussionsupporting

confidence: 87%

Growth promotion ability of phosphate‐solubilizing bacteria from the soybean rhizosphere under maize–soybean intercropping systems

et al. 2021

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BACKGROUND Optimum cultivation and management measures are needed to increase the phosphorus (P) absorption efficiency of crops for sustainable agricultural production. Previous studies indicated that leguminous crops can promote P absorption by neighboring gramineous crops. In this study, we isolated and screened the phosphate‐solubilizing bacteria (PSB) from soybean rhizosphere under a maize–soybean intercropping system in Southwest China, and nine PSBs with high P‐solubilizing ability were identified. RESULTS 16S rDNA sequencing and phylogenetic analysis showed that these PSBs belong mainly to Bacillus and Pseudomonas. The phosphate solubility of Bacillus aryabhattai B8W22 reached 388.62 μg mL−1. High‐performance liquid chromatographic analysis showed that each strain could secrete a large quantity of organic acids, including oxalic acid, malonic acid, citric acid and succinic acid. In addition, all strains produced indole acetic acid (IAA) and siderophores that could promote plant growth. Seed germination experiments testified that PSBs isolated in this study have an innate ability to promote plant growth. The plant culture pot experiment further illustrated that soil acid phosphatase (ACP) activity and available P content, as well as plant P uptake, increased significantly with PSBs inoculation. CONCLUSION PSBs from the rhizosphere soil of intercropped soybean could secrete organic acids that increase the solubilization of unavailable P, improve soil ACP activity and P availability, and produce IAA and siderophores that promote maize seed germination and seedling growth. Our findings indicate the PSBs from soybean rhizosphere have significant potential to reduce the application of chemical phosphate fertilizers and to promote sustainable agricultural development. © 2021 Society of Chemical Industry.

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Section: Discussionsupporting

confidence: 87%

Growth promotion ability of phosphate‐solubilizing bacteria from the soybean rhizosphere under maize–soybean intercropping systems

et al. 2021

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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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“…75% nitrogen and P2O5 level with biofertilizer soil applied was statistically at par with 100% nitrogen and P2O5 level without biofertilizer application. This might be due to different root stimulating hormones like auxin, gibberellins, cytokinin etc, mechanisms of N2 fixation, ammonia excretion, phosphate solubilization by inoculated microorganisms and their reaction (Narula et al 2011;Sood et al 2019). Furthermore, microorganism is supplemented by vermicompost as carrier in enhancing biological properties of soil to increase nutrient mobilization from applied nutrients (Kumar et al, 2014;Rady et al, 2016).…”

Section: Grain Yieldmentioning

confidence: 99%

Biofertilizer reduces the dependency on chemical fertilizer on wheat production

Khadka

Balchhaudi

Aryal

et al. 2022

Int J Appl Sci Biotechnol

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Scarce availability of chemical fertilizers threatens sustainability of wheat production in Nepal. Combined application of chemical and biofertilizer can reduce chemical fertilizer and enhance the yield under limited fertilizer availability. A field experiment was carried out to assess the combined application of chemical and biofertilizer on the growth and yield of spring wheat at Rampur, Chitwan from November 2020 to April 2021. The experiment was laid out in strip plot design with four nitrogen and P2O5 levels (0, 50, 75 and 100% of recommended dose) in vertical plots and three biofertilizer application methods (not applied, seed applied and soil applied) in horizontal plots with three replications. The research results revealed significant interaction between nitrogen and P2O5 levels and biofertilizer application methods. The highest grain yield (4624.48 kg ha-1) of wheat was obtained with 100% levels of N and P2O5 with soil applied biofertilizer at par with 75% levels of N and P2O5 with soil applied biofertilizer (4457.54 kg ha-1). The total nitrogen uptake was higher in biofertilizer applied wheat as compared with no application of biofertilizer although statistically not significant. The yield increment in 100% and 75% N and P2O5 levels with soil applied biofertilizer over same level N and P2O5 with no biofertilizer application were 10.96% and 29.60% respectively. The higher gross return, net return and B:C ratio were obtained with 75% and 100% N and P2O5 levels with soil and seed applied biofertilizers. The result indicates that 25% recommended dose of N and P2O5 could be reduced by soil application of biofertilizer without compromising the grain yield of wheat. Int. J. Appl. Sci. Biotechnol. Vol 10(4): 245-253.

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Effect of Indigenous Plant Growth-Promoting Rhizobacteria on Wheat (Triticum AestivumL.) Productivity and Soil Nutrients

Cited by 19 publications

References 17 publications

Growth promotion ability of phosphate‐solubilizing bacteria from the soybean rhizosphere under maize–soybean intercropping systems

Growth promotion ability of phosphate‐solubilizing bacteria from the soybean rhizosphere under maize–soybean intercropping systems

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

Biofertilizer reduces the dependency on chemical fertilizer on wheat production

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