Plant growth-promoting and heavy metal-resistant Priestia and Bacillus strains associated with pioneer plants from mine tailings

Zelaya-Molina, Lily X.; Guerra-Camacho, Jairo E.; Ortiz-Alvarez, Jossue M.; Vigueras-Cortés, Juan M.; Villa-Tanaca, Lourdes; Hernández-Rodríguez, César

doi:10.1007/s00203-023-03650-5

Cited by 4 publications

(2 citation statements)

References 132 publications

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“…reatments with ADJ6 comparatively showed more enhanced wheat growth promotion and productivity parameters than those with ADJ1. As with the ADJ1 and AdJ6 isolates, a substantial number of other B. cereus [115][116][117][118][119][120][121] and P. aryabhattai [122][123][124][125][126][127] have been shown with PGP assets.…”

Section: Discussionmentioning

confidence: 92%

Novel Bacillus and Prestia isolates from Dwarf century plant enhance crop yield and salinity tolerance

Dhar,

Kaur,

Singh

et al. 2024

Sci Rep

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Soil salinity is a major environmental stressor impacting global food production. Staple crops like wheat experience significant yield losses in saline environments. Bioprospecting for beneficial microbes associated with stress-resistant plants offers a promising strategy for sustainable agriculture. We isolated two novel endophytic bacteria, Bacillus cereus (ADJ1) and Priestia aryabhattai (ADJ6), from Agave desmettiana Jacobi. Both strains displayed potent plant growth-promoting (PGP) traits, such as producing high amounts of indole-3-acetic acid (9.46, 10.00 µgml−1), ammonia (64.67, 108.97 µmol ml−1), zinc solubilization (Index of 3.33, 4.22, respectively), ACC deaminase production and biofilm formation. ADJ6 additionally showed inorganic phosphate solubilization (PSI of 2.77), atmospheric nitrogen fixation, and hydrogen cyanide production. Wheat seeds primed with these endophytes exhibited enhanced germination, improved growth profiles, and significantly increased yields in field trials. Notably, both ADJ1 and ADJ6 tolerated high salinity (up to 1.03 M) and significantly improved wheat germination and seedling growth under saline stress, acting both independently and synergistically. This study reveals promising stress-tolerance traits within endophytic bacteria from A. desmettiana. Exploiting such under-explored plant microbiomes offers a sustainable approach to developing salt-tolerant crops, mitigating the impact of climate change-induced salinization on global food security.

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Section: Discussionmentioning

confidence: 92%

Novel Bacillus and Prestia isolates from Dwarf century plant enhance crop yield and salinity tolerance

Dhar,

Kaur,

Singh

et al. 2024

Sci Rep

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“…Enterobacter sp., and Stenotrophomonas maltophilia ). Pseudomonas frederiksbergensis and Lelliottia amnigena are commonly recognized as plant growth promoters with heavy-metal resistance [ 51 , 52 , 53 , 54 ]. This is the first study to report Pseudomonas frederiksbergensis and Lelliottia amnigena as PGPRs with heavy-metal resistance.…”

Section: Discussionmentioning

confidence: 99%

Characterization of Rhizosphere Microbial Diversity and Selection of Plant-Growth-Promoting Bacteria at the Flowering and Fruiting Stages of Rapeseed

Wang,

Sun,

2024

Plants

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Plant rhizosphere microorganisms play an important role in modulating plant growth and productivity. This study aimed to elucidate the diversity of rhizosphere microorganisms at the flowering and fruiting stages of rapeseed (Brassica napus). Microbial communities in rhizosphere soils were analyzed via high-throughput sequencing of 16S rRNA for bacteria and internal transcribed spacer (ITS) DNA regions for fungi. A total of 401 species of bacteria and 49 species of fungi in the rhizosphere soil samples were found in three different samples. The composition and diversity of rhizosphere microbial communities were significantly different at different stages of rapeseed growth. Plant-growth-promoting rhizobacteria (PGPRs) have been widely applied to improve plant growth, health, and production. Thirty-four and thirty-one PGPR strains were isolated from the rhizosphere soil samples collected at the flowering and fruiting stages of rapeseed, respectively. Different inorganic phosphorus- and silicate-solubilizing and auxin-producing capabilities were found in different strains, in addition to different heavy-metal resistances. This study deepens the understanding of the microbial diversity in the rapeseed rhizosphere and provides a microbial perspective of sustainable rapeseed cultivation.

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Carbonic anhydrase-mediated phosphogypsum degradation and enhanced CO2 sequestration: a promising sustainable strategy for biological resource utilization of phosphogypsum

Sengupta,

Dhal

2024

Journal of Applied Microbiology

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Aims This study continues our previous investigation of the intrinsic degradation of phosphogypsum (PG) by indigenous microorganisms on amending adequate nutrients. We aim to unravel the intricate mechanisms involved in PG biotransformation by a bacterial consortium. Methods and Results We isolated and characterised seven multi-metal-resistant bacterial strains from a nutrient-amended PG-contaminated microcosm and identified them through 16S rRNA gene sequencing. Primarily aerobic, gram-positive chemolithotrophs, these strains demonstrated significant heavy metal (HM) uptake and PG degradation potential. Further analysis revealed that all strains produced carbonic anhydrase (CA), while six also produced urease, which may facilitate microbial-induced carbonate precipitation (MICP). Microstructural and elemental analysis using SEM-EDX and XRD confirmed the PG bio-transformation, indicating substantial increases in carbonate concentrations and reductions in sulfate levels. Conclusions The consortium, composed of seven urease and CA-producing bacterial strains, effectively degraded PG, transforming it from an acidic to an alkaline state and significantly enhancing CO2 sequestration.

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Plant growth-promoting and heavy metal-resistant Priestia and Bacillus strains associated with pioneer plants from mine tailings

Cited by 4 publications

References 132 publications

Novel Bacillus and Prestia isolates from Dwarf century plant enhance crop yield and salinity tolerance

Novel Bacillus and Prestia isolates from Dwarf century plant enhance crop yield and salinity tolerance

Characterization of Rhizosphere Microbial Diversity and Selection of Plant-Growth-Promoting Bacteria at the Flowering and Fruiting Stages of Rapeseed

Carbonic anhydrase-mediated phosphogypsum degradation and enhanced CO2 sequestration: a promising sustainable strategy for biological resource utilization of phosphogypsum

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