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A preliminary overview of possible bacterial communities interacting with Pleurotus eryngii cultivation process

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Abstract  

Although mushroom production is sterile, bacterial communities are associated with the mushroom culture process. After noticing colonies of bacteria on the mycelium, spawn, and culture surfaces, we aim to isolate and identify the bacterial species present during each stage of Pleurotus eryngii culture. For this purpose, bacteria were characterized biochemically by catalase and oxidase assays and molecularly by 16S ribosomal RNA sequencing and were found to belong to the families of Enterobacteriaceae and Bacillaceae. Results reveal the presence of five species: Bacillus subtilis, B. tequilensis, B. cereus, Ewingella americana, and Klebsiella grimontii. The inhibitory activity of the isolated bacteria on mycelia growth on PDA reveals that Klebsiella grimonti and Bacillus cereus have a significant inhibitory effect on the development of Pleurotus eryngii var. ferulae mycelium.

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All data was included in the manuscript.

Abbreviations

16S rRNA:

16S ribosomal RNA

ANOVA:

Analysis of Variance

BET:

Ethidium bromide

BHI:

Solid Brain Heart Infusion

BLAST:

Basic Local Alignment Search Tool

BLAST:

Basic local alignment search tool

Bp:

Base pair

CaCO3 :

Calcium carbonate

ddNTPs:

Dideoxynucleotide triphosphates

DNA:

Deoxyribonucleic acid

dNTPs:

Deoxynucleotide triphosphates

PCR:

Polymerase chain reaction

PDA:

Potato Dextrose Agar

Rpm:

Rotation per minute

rRNA:

Ribosomal ribonucleic acid

SAP:

Shrimp alkaline phosphatase

TAE:

Tris Acetate EDTA

TE:

Tris- EDTA

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Acknowledgements

We thank the Plant, Soil and Environment Interactions Laboratory at the University of El-Manar, Faculty of Sciences and the Epidemiology Laboratory and Veterinary Microbiology, Bacteriology and Biotechnology Development Group at the Pasteur Institute of Tunis for providing lab facilities.

Funding

This study was not funded by any organizations.

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Correspondence to Ayda Khadhri.

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On behalf of all the authors, I do declare that we do not have any conflict of interest.

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Jaffali, C., Khadhri, A., Kmiha, S. et al. A preliminary overview of possible bacterial communities interacting with Pleurotus eryngii cultivation process. Biologia 78, 2649–2656 (2023). https://doi.org/10.1007/s11756-023-01420-8

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  • DOI: https://doi.org/10.1007/s11756-023-01420-8

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