Nigrosporins A and B, New Phytotoxic and Antibacterial Metabolites Produced by a Fungus<i>Nigrospora oryzae</i>

Tanaka, Masayasu; Fukushima, Toshiro; Tsujino, Yasuko; Fujimori, Takahiro

doi:10.1271/bbb.61.1848

Cited by 37 publications

(36 citation statements)

References 6 publications

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“…Crataeva magna, a medicinal plant growing along the streams and rivers constituting riparian vegetations in Karnataka, South India is reported to host N. oryzae as an endophyte (Nalini et al 2005). Phytotoxic and antibacterial metabolite, nigrosporin A and B were isolated in pure form (Tanaka et al 1997). However, in the present study it was not found active against any of the test fungi.…”

Section: Discussioncontrasting

confidence: 62%

Isolation, characterization, and bioactivity of endophytic fungi of Tylophora indica

Kumar

Kaushik

Edrada-Ebel

et al. 2010

World J Microbiol Biotechnol

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Dothediomycetes sp., Alternaria tenuissima, Thielavia subthermophila, Alternaria sp., Nigrospora oryzae, Colletotrichum truncatum, and Chaetomium sp. were isolated as endophytic fungi from leaves and stems of the medicinal plant, Tylophora indica, based on rDNA sequencing of ITS region and microscopic examination. Alternaria tenuissima, Colletotrichum truncatum, and Alternaria sp. were found to be active against both Sclerotinia sclerotiorum and Fusarium oxysporum. Chaetomium sp. showed very mild activity against Sclerotinia sclerotiorum and Fusarium oxysporum. Whereas Dothideomycete sp. and Thielavia subthermophila showed high activity against Sclerotinia sclerotiorum. Methanol extract of Dothediomycetes sp. showed 66. 5% growth inhibition (GI) at 500 μg/ml

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Section: Discussioncontrasting

confidence: 62%

Isolation, characterization, and bioactivity of endophytic fungi of Tylophora indica

Kumar

Kaushik

Edrada-Ebel

et al. 2010

World J Microbiol Biotechnol

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“…The results herein are in accordance with the results of Tanaka et al [54] and Abass et al [29] when they used leaf puncture assay to reveal the phytotoxicity of N. oryzae and N. sphaerica on different plants including green foxtail; barnyard grass; velvet leaf; corn; cowpea and date palm. The phytotoxicity of Nigrospora spp.…”

Section: Discussionsupporting

confidence: 91%

“…The phytotoxicity of Nigrospora spp. could be explained by the inhibition activity against (1) starch synthesis (revealed in barnyard grass plant) (2) photosynthetic CO 2 fixation (revealed in Chlorella vulgaris algae) (3) root elongation (revealed in lettuce plant) (4) oxygen evolution (revealed in pumpkin plant) (5) inducing of electrolyte leakage from photosynthetic tissues of cucumber cotyledons and Zinnia elegans leaves [54,55].…”

Section: Discussionmentioning

confidence: 99%

In Vitro Antifungal Activity of Different Plant Hormones on the Growth and Toxicity of Nigrospora Spp. on Date Palm (Phoenix dactylifera L.)

Abass¹

2017

TOPSJ

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Objective:The profound negative impact of chemical fungicides on human and animal health, as well as, the whole agroecosystem encouraged tremendous efforts to find alternative approaches to suppress the growth of plant pathogens. Method:Recently, plant hormones have been considered to reduce fungal severity. Five different plant hormones namely 2, 4-D (2,4-Dichlorophenoxyacetic acid); BAP (6-Benzylaminopurine); Dicamba (3,6-Dichloro-2-methoxybenzoic acid, 3,6-Dichloro-o-anisic acid); IAA (Indole-2-acetic acid) and SA (Salicylic acid) were selected to examine their antifungal activity against the growth of two species of date palm fungal pathogen Nigrospora spp. Results:Results showed that SA at 50 ppm was sufficient to inhibit the mycelium growth of N. oryzae completely, while with N. sphaerica; the treatments of 2, 4-D (40-50 ppm) and SA (40-50 ppm) led to similar complete inhibition results of mycelium growth. The data of BAP and IAA indicated no toxic effect toward mycelium growth of the pathogens. Similar trends of results have been obtained for phytotoxicity bioassay which performed on detached date palm leaves, 2, 4-D and SA at 30 ppm led to a complete inhibition for the production of toxins in the culture of N. oryzae and N. sphaerica. Conclusion:58% significant reduction in toxin production was obtained with Dicamba 30 ppm. Results presented here reveal the antifungal activity of different plant hormones in in vitro experiments, and are important to examine their efficiency in farther field studies on date palm.

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“…18 According to current published data, little is known about the activities and acting mechanisms of this type of compounds are almost lacking. 19 In this study, we investigated the antitumor activities of 1403P-3 and related molecular mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Anthracenedione derivative 1403P-3 induces apoptosis in KB and KBv200 cells via reactive oxygen species-independent mitochondrial pathway and death receptor pathway

Zhang¹,

Wu²,

Xia³

et al. 2007

Cancer Biology & Therapy

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Nigrosporins A and B, New Phytotoxic and Antibacterial Metabolites Produced by a FungusNigrospora oryzae

Cited by 37 publications

References 6 publications

Isolation, characterization, and bioactivity of endophytic fungi of Tylophora indica

Isolation, characterization, and bioactivity of endophytic fungi of Tylophora indica

In Vitro Antifungal Activity of Different Plant Hormones on the Growth and Toxicity of Nigrospora Spp. on Date Palm (Phoenix dactylifera L.)

Anthracenedione derivative 1403P-3 induces apoptosis in KB and KBv200 cells via reactive oxygen species-independent mitochondrial pathway and death receptor pathway

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