Antagonism of Some Aquatic Hyphomycetes against Plant Pathogenic Fungi

Sati, S. C.; Arya, P.

doi:10.1100/tsw.2010.80

Cited by 14 publications

(3 citation statements)

References 18 publications

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“…Gulis and Stephanovich [ 21 ] found the growth inhibition of some bacterial and pathogenic fungal strains by using freshwater hyphomycetes, including A. longissima . Recently, Sati and Arya [ 22 ] and Arya and Sati [ 13 ] also reported antimicrobial potential of five freshwater hyphomycetes against seven pathogenic fungi and five bacteria. Xiao et al [ 23 ] isolated antimicrobial compounds from the fungus Pestalotiopsis photiniae and evaluated inhibitory potential of this fungus against some plant pathogenic fungi.…”

Section: Resultsmentioning

confidence: 99%

Bioactivity of Root Endophytic Freshwater HyphomycetesAnguillospora longissima(Sacc. & Syd.) Ingold

Sati

Singh

2014

The Scientific World Journal

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Anguillospora longissima, isolated from root as endophytic freshwater hyphomycetes, was evaluated for its bioactivity (antibacterial potential) against five bacterial strains, namely, Gram-positive (Bacillus subtilis MTCC 121) and Gram-negative (Agrobacterium tumefaciens MTCC 609, Escherichia coli MTCC 40, Erwinia chrysanthemum, and Xanthomonas pseudomonas). Antimicrobial activity was assessed by measuring the zone of inhibition with preliminary and secondary antimicrobial assays. The applied fungus was found significant for all tested bacterial strains as showen by their zone of inhibition. In preliminary antimicrobial assay, maximum zone of inhibition was recorded against Gram-negative human pathogenic bacterial strain Escherichia coli (23 mm) followed by Erwinia chrysanthemi (22 mm), Agrobacterium tumefaciens (21 mm), and Xanthomonas phaseoli (21 mm), while minimum zone of inhibition was observed against Bacillus subtilis (20 mm). In secondary antimicrobial assay, the maximum zone of inhibition was recorded against Erwinia chrysanthemi (11 mm) followed by Agrobacterium tumefaciens (10 mm), Xanthomonas phaseoli (10 mm), and Bacillus subtilis (9 mm) and minimum inhibition was found against Escherichia coli (8 mm).

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Section: Resultsmentioning

confidence: 99%

Bioactivity of Root Endophytic Freshwater HyphomycetesAnguillospora longissima(Sacc. & Syd.) Ingold

Sati

Singh

2014

The Scientific World Journal

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“…While several studies have reported inhibitory effects of aquatic hyphomycetes on bacteria and fungi (e.g. Gulis and Stephanovich, 1999;Sati and Arya, 2010) and chemical inhibition among aquatic hyphomycetes (Shearer and Zare-Maivan, 1988;Treton et al, 2004;Ferreira et al, 2010) or between aquatic hyphomycetes and cooccurring bacterial strains (Gulis and Suberkropp, 2003), the allelopathic effect of aquatic hyphomycetes on stream PP has, to our knowledge, never been studied. Our results show that most of the aquatic hyphomycete species tested (8 out of 12 tested in solid cultures) inhibited at least one diatom species.…”

Section: Discussionmentioning

confidence: 96%

Allelopathic inhibition of primary producer growth and photosynthesis by aquatic fungi

et al. 2017

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Autochthonous primary production is generally much reduced in forested headwater streams. Several hypotheses have been proposed for explaining this observation, among them, the low light intensity, or the strong constraints exerted by stream current. Allelopathic inhibition of competitors is a common ecological process in aquatic environments. Aquatic hyphomycetes are known to chemically inhibit bacteria and other fungi (including other aquatic hyphomycetes) but a possible allelopathic effect of aquatic hyphomycetes on primary producers has never been tested. The inhibitory effect of twelve aquatic hyphomycete species was tested on three diatom species. Nine aquatic hyphomycete species exhibited anti-diatom activity. Up to 100% diatom growth inhibition was observed. Our study reveals that such allelopathic interactions might be common in streams and probably involve an array of fungal compounds. We propose that the generally reduced primary production observed in forested headwater streams is, among other factors, due to the inhibition of primary producers by allelopathic compounds released by aquatic hyphomycetes.

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“…HELU was the most antagonistic species, particularly the S strain in reference conditions. Although some studies claim stronger allelopathic interactions for TEMA than for HELU, a clear inhibitory activity of this latter towards other AH species was previously recognized [40,63]. This trait, combined with high growth rates, may be responsible for its dominance in both mixed assemblages in the decomposition test (S medium).…”

Section: Discussionmentioning

confidence: 97%