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 journalArticle

53 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 languageEnglish
Pages (from-to)974-978
Number of pages5
JournalMycological Research
Volume108
Issue number8
DOIs
Publication statusPublished - 2004

Fingerprint

Endophytes
melanin
endophyte
Melanins
endophytes
pigment
pigments
Phyllosticta
deciduous forests
deciduous forest
Fungi
tricyclazole
Guignardia
fungus
Mangifera
fungi
Hyphae
evergreen forest
dry forest
dry forests

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Ecology, Evolution, Behavior and Systematics
  • Genetics
  • Plant Science

Cite this

Suryanarayanan, Trichur S. ; Ravishankar, Jagadesa P. ; Venkatesan, Govindan ; Murali, Thokur S. / Characterization of the melanin pigment of a cosmopolitan fungal endophyte. In: Mycological Research. 2004 ; Vol. 108, No. 8. pp. 974-978.
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Characterization of the melanin pigment of a cosmopolitan fungal endophyte. / Suryanarayanan, Trichur S.; Ravishankar, Jagadesa P.; Venkatesan, Govindan; Murali, Thokur S.

In: Mycological Research, Vol. 108, No. 8, 2004, p. 974-978.

Research output: Contribution to journalArticle

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