Enhanced retinal longwave sensitivity using a chlorophyll-derived photosensitiser in Malacosteus niger, a deep-sea dragon fish with far red bioluminescence

R. H. Douglas, J. C. Partridge, K. S. Dulai, D. M. Hunt, C. W. Mullineaux, P. H. Hynninen

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

Through partial bleaching of both visual pigment extracts and cell suspensions we show that the deep-sea stomiid Malacosteus niger, which produces far red bioluminescence, has two visual pigments within its retina which form a rhodopsin/porphyropsin pigment pair with λ(max) values around 520 and 540 nm, but lacks the very longwave sensitive visual pigments (λ(max)>550 nm) observed in two other red light producing stomiids. The presence of only a single opsin gene in the M. niger genome was confirmed by molecular and cladistic analysis. To compensate for its apparently reduced longwave sensitivity compared to related species, the outer segments of M. niger contain additional pigments, which we identify as a mixture of defarnesylated and demetallated derivatives of bacteriochlorophylls c and d, that are used as a photosensitiser to enhance its sensitivity to longwave radiation. Copyright (C) 1999 Elsevier Science Ltd.

Original languageEnglish
Pages (from-to)2817-2832
Number of pages16
JournalVision Research
Volume39
Issue number17
DOIs
Publication statusPublished - 1 Aug 1999
Externally publishedYes

Fingerprint Dive into the research topics of 'Enhanced retinal longwave sensitivity using a chlorophyll-derived photosensitiser in Malacosteus niger, a deep-sea dragon fish with far red bioluminescence'. Together they form a unique fingerprint.

Cite this