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A novel blue fluorescent chlorophyll catabolite accumulates in senescent leaves of the peace lily and indicates a split path of chlorophyll breakdown
Author(s) -
Kräutler Bernhard,
Banala Srinivas,
Moser Simone,
Vergeiner Clemens,
Müller Thomas,
Lütz Cornelius,
Holzinger Andreas
Publication year - 2010
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/j.febslet.2010.09.011
Subject(s) - catabolite repression , chlorophyll , fluorescence , botany , chlorophyll a , biology , chemistry , biochemistry , physics , gene , quantum mechanics , mutant
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)‐β‐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.