c PPB ‐ a E is discovered from photosynthetic benthic dinoflagellates
Although chlorophyll degradation pathways in higher plants have been well studied, little is known about the mechanisms of chlorophyll degradation in microalgae. In this article, we report the occurrence of a chlorophyll a derivative that has never been discovered in photosynthetic organisms. This c...
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Published in | Journal of phycology Vol. 50; no. 1; pp. 101 - 107 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
01.02.2014
|
Online Access | Get full text |
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Summary: | Although chlorophyll degradation pathways in higher plants have been well studied, little is known about the mechanisms of chlorophyll degradation in microalgae. In this article, we report the occurrence of a chlorophyll
a
derivative that has never been discovered in photosynthetic organisms. This chlorophyll derivative emits no fluorescence and has a peculiar absorbance peak at 425, 451, 625, and 685 nm. From these features, it was identified as 13
2
,17
3
‐cyclopheophorbide
a
enol (c
PPB
‐
a
E), reported as a degradation product of chlorophyll
a
derived from prey algal cells in heterotrophic protists. We discovered c
PPB
‐
a
E in six benthic photosynthetic dinoflagellates that are phylogenetically separated into four clades based on
SSU
r
DNA
molecular phylogeny. This is the first report of this chlorophyll derivative in photosynthetic organisms and we suggest that the derivative is used to quench excess light energy. |
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ISSN: | 0022-3646 1529-8817 |
DOI: | 10.1111/jpy.12135 |