Plant growth promoting and inducible antifungal activities of irrigation well water-bacteria

Tabli, Nassira; Rai, Abdelwahab; Bensidhoum, Leila; Palmieri, Gianna; Gogliettino, Marta; Cocca, Ennio; Consiglio, Carmela; Cillo, Fabrizio; Bubici, Giovanni; Nabti, Elhafid

doi:10.1016/j.biocontrol.2017.10.010

Cited by 22 publications

(12 citation statements)

References 41 publications

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“…Indeed, in this study, only S. quinivorans was identified as a HCN producer, a volatile antifungal compound capable of inhibiting growth of several plant pathogens [ 45 ]. Other Serratia genus members have been also reported as active producers of different lytic enzymes and several antibiotics, as well as HCN producers [ 46 , 47 ]. Inhibition of B. mediterranea growth has been described to be affected by microbial volatiles produced by the cork oak beneficial endophytes, Coniothyrium carteri and Fusarium oxysporum [ 25 ].…”

Section: Discussionmentioning

confidence: 99%

Cork Oak Forests Soil Bacteria: Potential for Sustainable Agroforest Production

et al. 2021

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Plant growth promoting rhizobacteria (PGPR) are in increasing demand due to their role in promoting sustainable practices, not only in agriculture but also in forestry. Keeping in mind the future application of PGPR for increasing cork oak sustainability, the aim of this study was to find cork oak PGPR isolates with increased nutrient solubilisation traits, able to promote root morphological changes and/or antagonize cork oak bark phytopathogens. Soils from three cork oak forests with distinct bioclimates (humid, semi-humid and semi-arid) were used for isolating bacteria. From the 7634 colony-forming units, 323 bacterial isolates were biochemically assayed for PGPR traits (siderophores production, phosphate solubilizing and organic acids production), and 51 were found to display all these traits. These PGPR were able to induce root morphological changes on Arabidopsis thaliana, like suppression of primary root growth, increase of lateral roots or root hairs formation. However, the most proficient PGPR displayed specific ability in changing a single root morphological trait. This ability was related not only to bacterial genotype, but also with the environment where bacteria thrived and isolation temperature. Bacteria from semi-arid environments (mainly Bacillus megaterium isolates) could hold a promising tool to enhance plant development. Other isolates (Serratia quinivorens or B. cereus) could be further explored for biocontrol purposes.

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Section: Discussionmentioning

confidence: 99%

Cork Oak Forests Soil Bacteria: Potential for Sustainable Agroforest Production

et al. 2021

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“…Velusamy and Kim found a strong correlation between bacterial chitinolytic activity and the lysis of the fungal mycelium under in vitro conditions (Velusamy and Kim, 2011). Some genera of endophytic bacteria, such as Enterobacter, Bacillus, Micromonospora, Streptomyces, Burkholderia and Stenotrophomonas were reported with chitinolytic activities and effective against fungal phytopathogens (Tabli et al, 2018;Gasmi et al, 2019). However, Bach et al did not detect chitinolytic activities in tests performed with isolates, which were positive for the presence of other hydrolytic enzymes (Bach et al, 2015).…”

Section: Chitinasesmentioning

confidence: 99%

Knock, knock-let the bacteria in: enzymatic potential of plant associated bacteria

Carro

Menéndez

2020

Molecular Aspects of Plant Beneficial Microbes in Agriculture

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“…The role of siderophores in plant-bacteria association is to mobilize various metal ions, such as Fe, Cu and Zn (Tabli et al, 2018). Siderophores may excite the biosynthesis of other antimicrobial compounds directly by enriching the accessibility of minerals to bacteria that may stop the development of phytopathogenic fungi as well as other pathogenic microorganisms.…”

Section: Indole-3 Acetic Acid (Iaa) Production and Phosphate Solubili...mentioning

confidence: 99%

Characterization of broad-spectrum biocontrol efficacy of Bacillus velezensis against Fusarium oxysporum in Triticum aestivum L.

AGHA

Jahan

Azeem

et al. 2022

Not Bot Horti Agrobo

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Fungi are the most important phytopathogens that cause yield losses. The mycotoxins released by fungi cause spoilage of stored food consumed by humans and feed supplied to animals. Fungi-antagonistic microbes are gaining attention as potential biocontrol agents (BCAs). This study was designed to isolate bacterial isolates from different crops and evaluate their in vitro antifungal assay against three phytopathogens, plant growth promoting (PGP) characteristics, molecular identification, and in vivo efficiency against the most devastating phytopathogenic fungus Fusarium oxysporum Schltdl. In the in vitro experiment, the 3 isolates BA, GL-1, and 5a out of 360 isolates showed more than 60% inhibitory activity against the selected fungi in this study. On the basis of 16S rRNA sequencing and phylogenetic analysis, BA isolate was identified as Bacillus velezensis. All three isolates produced indole acetic acid (IAA), hydrogen cyanide (HCN), and cellulase enzymes, while the BA and GL-1 isolates also produced siderophores and the BA isolate also produced ammonia. BA was selected on basis of not only Biocontrol efficacy but also maximum PGPR activity compared to GL-1 and 5a. In vivo assay, the isolate BA showed a significant decrease in disease severity caused by Fusarium oxysporum by 64.97% after 100 days of inoculation on wheat (FD-08) seedlings in a greenhouse assay and enhanced the shoot root height, fresh and dry mass. The wide-ranging antagonistic action of Bacillus velezensis isolated from the phyllosphere of wheat crops showed promising fungicidal and plant growth-promoting capabilities, suggesting it can be used as a biofungicide.

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Plant growth promoting and inducible antifungal activities of irrigation well water-bacteria

Cited by 22 publications

References 41 publications

Cork Oak Forests Soil Bacteria: Potential for Sustainable Agroforest Production

Cork Oak Forests Soil Bacteria: Potential for Sustainable Agroforest Production

Knock, knock-let the bacteria in: enzymatic potential of plant associated bacteria

Characterization of broad-spectrum biocontrol efficacy of Bacillus velezensis against Fusarium oxysporum in Triticum aestivum L.

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