Characterization of the melanin pigment of a cosmopolitan fungal endophyte

Trichur S. Suryanarayanan; Jagadesa P. Ravishankar; Govindan Venkatesan; Thokur S. Murali

doi:10.1017/S0953756204000619

Characterization of the melanin pigment of a cosmopolitan fungal endophyte

Trichur S. Suryanarayanan, Jagadesa P. Ravishankar, Govindan Venkatesan, Thokur S. Murali

Research output: Contribution to journal › Article › peer-review

75 Citations (Scopus)

Abstract

Phyllosticta capitalensis (teleomorph Guignardia mangiferae) occurs as a foliar endophyte in woody trees belonging to different families of both temperate and tropical regions. We isolated this endophyte from plants in different habitats, such as mangroves, dry deciduous forest, moist deciduous forest and semi-evergreen forest. This endophyte was found to produce a black pigment that was characterized to be melanin based on uv-visible, IR and ESR spectra and chemical tests. Tricyclazole, a specific inhibitor of pentaketide melanin biosynthesis, inhibited synthesis of the pigment indicating it is a 1-8, dihydroxynaphthalene. This appears to be the first report of such a melanin in Phyllosticta or other foliar endophytes. Melanin in the hyphae of P. capitalensis may be responsible for the success of this fungus as a cosmopolitan endophyte, since melanin is known to enhance the survival capability of fungi in stressful environments.

Original language	English
Pages (from-to)	974-978
Number of pages	5
Journal	Mycological Research
Volume	108
Issue number	8
DOIs	https://doi.org/10.1017/S0953756204000619
Publication status	Published - 2004

All Science Journal Classification (ASJC) codes

Biotechnology
Ecology, Evolution, Behavior and Systematics
Genetics
Plant Science

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title = "Characterization of the melanin pigment of a cosmopolitan fungal endophyte",

abstract = "Phyllosticta capitalensis (teleomorph Guignardia mangiferae) occurs as a foliar endophyte in woody trees belonging to different families of both temperate and tropical regions. We isolated this endophyte from plants in different habitats, such as mangroves, dry deciduous forest, moist deciduous forest and semi-evergreen forest. This endophyte was found to produce a black pigment that was characterized to be melanin based on uv-visible, IR and ESR spectra and chemical tests. Tricyclazole, a specific inhibitor of pentaketide melanin biosynthesis, inhibited synthesis of the pigment indicating it is a 1-8, dihydroxynaphthalene. This appears to be the first report of such a melanin in Phyllosticta or other foliar endophytes. Melanin in the hyphae of P. capitalensis may be responsible for the success of this fungus as a cosmopolitan endophyte, since melanin is known to enhance the survival capability of fungi in stressful environments.",

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AU - Suryanarayanan, Trichur S.

AU - Ravishankar, Jagadesa P.

AU - Venkatesan, Govindan

AU - Murali, Thokur S.

PY - 2004

Y1 - 2004

N2 - Phyllosticta capitalensis (teleomorph Guignardia mangiferae) occurs as a foliar endophyte in woody trees belonging to different families of both temperate and tropical regions. We isolated this endophyte from plants in different habitats, such as mangroves, dry deciduous forest, moist deciduous forest and semi-evergreen forest. This endophyte was found to produce a black pigment that was characterized to be melanin based on uv-visible, IR and ESR spectra and chemical tests. Tricyclazole, a specific inhibitor of pentaketide melanin biosynthesis, inhibited synthesis of the pigment indicating it is a 1-8, dihydroxynaphthalene. This appears to be the first report of such a melanin in Phyllosticta or other foliar endophytes. Melanin in the hyphae of P. capitalensis may be responsible for the success of this fungus as a cosmopolitan endophyte, since melanin is known to enhance the survival capability of fungi in stressful environments.

AB - Phyllosticta capitalensis (teleomorph Guignardia mangiferae) occurs as a foliar endophyte in woody trees belonging to different families of both temperate and tropical regions. We isolated this endophyte from plants in different habitats, such as mangroves, dry deciduous forest, moist deciduous forest and semi-evergreen forest. This endophyte was found to produce a black pigment that was characterized to be melanin based on uv-visible, IR and ESR spectra and chemical tests. Tricyclazole, a specific inhibitor of pentaketide melanin biosynthesis, inhibited synthesis of the pigment indicating it is a 1-8, dihydroxynaphthalene. This appears to be the first report of such a melanin in Phyllosticta or other foliar endophytes. Melanin in the hyphae of P. capitalensis may be responsible for the success of this fungus as a cosmopolitan endophyte, since melanin is known to enhance the survival capability of fungi in stressful environments.

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ER -

Characterization of the melanin pigment of a cosmopolitan fungal endophyte

Abstract

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