Journal
FEBS LETTERS
Volume 584, Issue 19, Pages 4215-4221Publisher
WILEY
DOI: 10.1016/j.febslet.2010.09.011
Keywords
Chlorophyll; Catabolite; Luminescence; Pigment; Structure determination; Tetrapyrrole
Funding
- Austrian National Science Foundation (FWF) [P19596, L472]
- Austrian Science Fund (FWF) [L 472] Funding Source: researchfish
- Austrian Science Fund (FWF) [P19596, L472] Funding Source: Austrian Science Fund (FWF)
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Colorless, non-fluorescent Chl-catabolites (NCCs) are the typical, ubiquitous products of chlorophyll (Chl)-breakdown in senescent leaves. However, a fluorescent Chl-catabolite (FCC) accumulated in de-greened leaves of Spathiphyllum wallisii (Peace Lily), which showed a weak blue luminescence. The FCC, named Sw-FCC-62, was 'hypermodified' with an unprecedented 6-(2-[3,4-dihydroxy-phenyl]-ethyl)-beta-glucopyranosidyl ester at the propionyl group. Such esters stabilize FCCs against their typical and rapid, spontaneous isomerization to NCCs. Chl-breakdown in Sp. wallisii thus branches off from the 'common' path in leaves, and furnishes unique and 'persistent' FCCs. Our findings on 'hypermodified' FCCs also call for attention as to possible physiological roles of Chl-catabolites in plants. (C) 2010 Published by Elsevier B. V. on behalf of the Federation of European Biochemical Societies.
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