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Issue 12, 2008
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A yellow chlorophyll catabolite is a pigment of the fall colours

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Abstract

Here we describe the detection and identification of a yellow chlorophyll catabolite (Cj-YCC) in fresh extracts of senescent leaves of Cercidiphyllum japonicum. In addition, we report its partial synthesis by oxidation of Cj-NCC-1, the major (colourless) “nonfluorescent” chlorophyll catabolite (NCC) found in degreened leaves of C. japonicum. The spectroscopic analysis and structural characterization indicated Cj-YCC to be a simple dehydrogenation product of Cj-NCC-1 (by formal removal of a hydrogen atom at the C(20)- and C(1)-positions). Indeed, NCCs are easily oxidized and were first called “rusty pigments”, as they had a tendency to turn brown upon storage on a dry silica gel plate. The yellow tetrapyrroleCj-YCC may thus come about by oxidation of Cj-NCC-1 in the leaves. Its presence in the yellow leaves of a deciduous tree provides the first evidence for the contribution of a coloured chlorophyll catabolite to the fall colours.

Graphical abstract: A yellow chlorophyll catabolite is a pigment of the fall colours

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Publication details

The article was received on 06 Aug 2008, accepted on 07 Oct 2008 and first published on 17 Oct 2008


Article type: Paper
DOI: 10.1039/B813558D
Citation: Photochem. Photobiol. Sci., 2008,7, 1577-1581
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    A yellow chlorophyll catabolite is a pigment of the fall colours

    S. Moser, M. Ulrich, T. Müller and B. Kräutler, Photochem. Photobiol. Sci., 2008, 7, 1577
    DOI: 10.1039/B813558D

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