Biological Control of Faba Bean Pathogenic Fungi by Three Cyanobacterial Filtrates

Abo-Shady, Atef M.; Al-ghaffar, Behia A; Rahhal, M. M. H.; Monem, H A Abd-el

doi:10.3923/pjbs.2007.3029.3038

Cited by 21 publications

(1 citation statement)

References 7 publications

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“…Most antifungal screening has focussed on medicinal applications where microalgal extracts are tested against human pathogens such as Candida albicans (Falaise et al, 2016;Poveda, 2021) with fewer studies focusing on plant pathogens. Examples of microalgae with phytopathogenic activity include Nostoc commune and Oscillatoria tenuis inhibiting Fusarium oxysporum, Phytophthora capsici and Alternaria alternata (Kim, 2006) and Anabaena subcylindrica, Nostoc muscorum and Oscillatoria angusta inhibiting seven pathogenic fungi isolated from infected Faba bean plants ( Abo-Shady et al, 2007). There are examples of microalgae extracts reducing fungal diseases in greenhouse and eld trials.…”

Section: Introductionmentioning

confidence: 99%

Cataloguing microalgae and Cyanobacteria strains from the Mosonmagyaróvár Algal Culture Collection with in vitro antagonistic activity against phytopathogenic fungi and oomycetes

et al. 2023

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Microalgae produce many secondary metabolites that are biologically active, including compounds with antifungal activity. These could potentially function as biofungicides. Selection criteria for potential strains include having good antifungal activity against speci c phytopathogenic fungi and high biomass productivity rates to ensure su cient biomass can be generated. Water extracts were prepared from 280 strains comprising of 33 Cyanophyceae strains (13 genera), 157 Chlorophyceae strains (29 genera), 80 Trebouxiophyceae strains (19 genera), 5 Klebsormidiophyceae strains (1 genus) and 1 Zygnematophyceae strain. These were tested against 9 phytopathogenic fungi. In total, 45% of the species had antifungal activity against at least one fungal pathogen. Cyanobacteria had the highest "hit-rate" (64%), followed by the Chlorophyceae (49%) and Trebouxiophyceae (30%). Water extracts of 19 strains had fungicidal activity -these were predominantly Cyanobacteria. The Cyanobacteria displayed a wider spectrum of activity with ve strains being active (either fungicidal or fungistatic) against three or more fungal strains -Trichormis variabilis MACC-304 and Tolypothrix tennis MACC-205 had antifungal activity against 6 phytopathogens and Nostoc linckia MACC-612 inhibited 4 fungi. Each Chlorophyta strain was only active against 1-2 fungal strains. However, the daily productivity rates of Cyanobacteria were signi cantly lower than Chlorophyta strains. Further investigation of 15 Nostocales species (Families Nostocaceae, Tolypothrichaceae and Calotrichaceae) showed the Nostoc species generally had signi cantly lower biomass generation compared to other Nostocacaeae strains. The most promising strain was Tolypothrix tenuis MACC-205 which had the most potent, broad spectrum antifungal activity as well as signi cantly higher daily biomass productivity rates. Some microalgae strains (8%) had a stimulatory effect, suggesting the potential to screen strains especially from the Klebsormidiophyceae, for stimulating activity of bene cial plant growth promoting fungi. Thus, Cyanobacteria can potentially be developed as effective agricultural tools for environmentally-friendly disease management.

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Section: Introductionmentioning

confidence: 99%

Cataloguing microalgae and Cyanobacteria strains from the Mosonmagyaróvár Algal Culture Collection with in vitro antagonistic activity against phytopathogenic fungi and oomycetes

et al. 2023

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Auxin producing non‐heterocystous Cyanobacteria and their impact on the growth and endogenous auxin homeostasis of wheat

Mazhar

Cohen

Hasnain

2013

J. Basic Microbiol.

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Four non-heterocystous cyanobacterial strains isolated from rhizosphere and soil surface mat of rice, wheat, and maize were identified by 16S rRNA gene sequencing and evaluated for auxin production as well as growth promotion of wheat. Isolated strains produced a diverse amount of auxin in BG11 media supplemented with different concentrations of L-tryptophan. The amount of auxin detected with colorimetric methods was higher as compared to GC-MS analysis. Auxin production by cyanobacterial strains in BG 11 medium supplemented with 250 µg ml(-1) L-tryptophan ranged from 0.20 to 1.63 µg ml(-1) IAA as revealed by gas chromatography and mass spectrometric (GC-MS) analysis. In a hydroponic growth system, the vegetative growth of wheat was stimulated appreciably by inoculation with cyanobacterial strains. The endogenous auxin content of wheat was significantly correlated with the exogenous auxin production of the cyanobacterial strains. It was observed that cyanobacterial strains produced more endogenous and exogenous auxin in the presence of a plant, showing that plants might be releasing some signals responsible for higher auxin production by cyanobacterial cultures. It was concluded that the auxin producing potential of cyanobacterial strains can be exploited for the promotion of wheat growth.

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Diseases of Broad Bean

Alananbeh,

Alkarablieh,

Salem

et al. 2024

Handbook of Vegetable and Herb Diseases

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Biological Control of Faba Bean Pathogenic Fungi by Three Cyanobacterial Filtrates

Cited by 21 publications

References 7 publications

Cataloguing microalgae and Cyanobacteria strains from the Mosonmagyaróvár Algal Culture Collection with in vitro antagonistic activity against phytopathogenic fungi and oomycetes

Cataloguing microalgae and Cyanobacteria strains from the Mosonmagyaróvár Algal Culture Collection with in vitro antagonistic activity against phytopathogenic fungi and oomycetes

Auxin producing non‐heterocystous Cyanobacteria and their impact on the growth and endogenous auxin homeostasis of wheat

Diseases of Broad Bean

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