Bacillus thuringiensis as a Biofertilizer and Plant Growth Promoter

Delfim, Jorge; Dijoo, Zulaykha Khurshid

doi:10.1007/978-3-030-61010-4_12

Cited by 9 publications

(4 citation statements)

References 53 publications

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“…Strain AR11 exhibited strong phosphate solubilization, nitrogen fixation abilities, and increased plant growth. These multifunctional traits suggest that AR11 could be a plant growth promoter, aligning with previous studies that have highlighted B. thuringiensis as a powerful phosphate-solubilizing bacterium [31], nitrogen fixer [32] and effective plant growth-promoter [33]. Seed germination started within 48 h post-inoculation with selected endophytic bacteria, indicating their potential as biofertilizers.…”

Section: Plant Growth-promoting Characteristicssupporting

confidence: 86%

Exploring Endophytic Bacteria from Artemisia spp. and Beneficial Traits on Pea Plants

Hadian,

Smith,

Kopriva

et al. 2024

Plants

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Endophytic microorganisms represent promising solutions to environmental challenges inherent in conventional agricultural practices. This study concentrates on the identification of endophytic bacteria isolated from the root, stem, and leaf tissues of four Artemisia plant species. Sixty-one strains were isolated and sequenced by 16S rDNA. Sequencing revealed diverse genera among the isolated bacteria from different Artemisia species, including Bacillus, Pseudomonas, Enterobacter, and Lysinibacillus. AR11 and VR24 obtained from the roots of A. absinthium and A. vulgaris demonstrated significant inhibition on Fusarium c.f. oxysporum mycelial growth. In addition, AR11, AR32, and CR25 exhibited significant activity in phosphatase solubilization, nitrogen fixation, and indole production, highlighting their potential to facilitate plant growth. A comparative analysis of Artemisia species showed that root isolates from A. absinthium, A. campestris, and A. vulgaris have beneficial properties for inhibiting pathogen growth and enhancing plant growth. AR11 with 100% similarity to Bacillus thuringiensis, could be considered a promising candidate for further investigation as microbial biofertilizers. This finding highlights their potential as environmentally friendly alternatives to chemical pesticides, thereby contributing to sustainable crop protection practices.

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Section: Plant Growth-promoting Characteristicssupporting

confidence: 86%

Exploring Endophytic Bacteria from Artemisia spp. and Beneficial Traits on Pea Plants

Hadian,

Smith,

Kopriva

et al. 2024

Plants

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“…Bacillus cereus WGT1 and Bacillus thuringiensis WGT11 showed the highest plant growth-promoting potential by increasing 37% and 31% grain yield, respectively. Delfim & Dijoo (2021) also demonstrated that Bacillus thuringiensis have potential to produce diverse PGP compounds for crop production and can be used as biofertilizers. Previously, Huang et al (2022) also reported that salt-tolerant PGPR have the potential to increase plant fresh weight by 36.31% and plant length by 71.21%.…”

Section: Discussionmentioning

confidence: 94%

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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“…In Table 5, shows the growth of P. vulgaris in terms of the phenology and biomass at physiological maturity due to B. thuringiensis and M. echinospora with NH 4 NO 3 30%, its reported that organic compounds from photosynthesis transformed into phytohormones that stimulated the generation of vegetative axillary buds that induced root elongation, [22][23][24] in that sense the root systems were able to exploration soil to uptake and optimized NH 4 NO 3 reduced at 30%, even that with healthy plant growth, compared to P. vulgaris without B. thuringiensis and M. echinospora fed with NH 4 NO 3 at 100% (RC), the root system grew less as its observed in Figure 5, indicating that the recommended dose was not uptake.…”

Section: Discussionmentioning

confidence: 99%

Bacillus thuringiensis and Micromonospora echinospora ongrowth of Phaseolus vulgaris

Velázquez-Medina¹,

Cruz²,

Sanchez–Yáñez³

2022

HIJ

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The well-known bacteria genus called as Bacillus thuringiensis (Bt) is recognized for being used in the biological control of insect pests in agriculture. However, there is little information on the effect of Bt as a plant growth promoter and in interaction with Micromonospora echinopora, which, being an endophyte, could improve the response of Phaseolus vulgaris with NH4NO3 atreduced at 30%of common recommended without risk of affecting plant health or yield.The objective of this work was to analyze the response of P. vulgaris to Bt and M. echinospora with NH4NO3 at 30% of recommended dose. The experiment was conducted under a randomized block design, using the response variables: germination percentage, phenology and biomass. The experimental data were analyzed by ANOVA/Tukey HSD (P<0.05). In the results, it was found that B.thuringiensis induced in P. vulgaris a yield of 3.2Ton/Ha, while with M. echinospora 3.6Ton/Ha was reached, with NF reduced at 30%, while it was shown that B.thuringiensis improved the yield with M. echinospora with 4.0Ton /Ha, values with statistical difference compared to the 2.8 Ton/Ha of P. vulgaris without B.thuringiensis or M. echinospora used as relative control with 100% of the NF.Concluded that B. thuringiensis is not only useful in biological control but that it can be an excellent growth promoter that can be improved with M. echinospora, another option for the sustainable production of P. vulgaris.

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Bacillus thuringiensis as a Biofertilizer and Plant Growth Promoter

Cited by 9 publications

References 53 publications

Exploring Endophytic Bacteria from Artemisia spp. and Beneficial Traits on Pea Plants

Exploring Endophytic Bacteria from Artemisia spp. and Beneficial Traits on Pea Plants

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

Bacillus thuringiensis and Micromonospora echinospora ongrowth of Phaseolus vulgaris

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