Journal
CHEMISTRY & BIODIVERSITY
Volume 13, Issue 11, Pages 1441-1453Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cbdv.201600181
Keywords
Chlorophyll; Fruit; Phyllobilins; Porphyrins; Plant senescence
Funding
- Interreg IV Italy-Austria Program (ERDF) [5345 CUP: B25E11000300007]
- Austrian Science Foundation (FWF) [I-563, P-28522]
- Autonomous Province of Bolzano
- Austrian Science Fund (FWF) [P28522] Funding Source: Austrian Science Fund (FWF)
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In cold extracts of senescent leaves of the plum tree (Prunus domestica ssp. domestica), six colorless non-fluorescent chlorophyll catabolites (NCCs) were characterized, named Pd-NCCs. In addition, several minor NCC fractions were tentatively classified. The structure of the most polar one of the NCCs, named Pd-NCC-3(2), featured an unprecedented twofold glycosidation pattern. Three of the NCCs are also functionalized at their 32-position by a glucopyranosyl group. In addition, two of these glycosidated NCCs carry a dihydroxyethyl group at their 18-position. In the polar Pd-NCC-32, the latter group is further glycosidated at the terminal 18(2)-position. Four other major Pd-NCCs and one minor Pd-NCC were identified with five NCCs from higher plants known to belong to the 'epi'-series. In addition, tentative structures were derived for two minor fractions, classified as yellow chlorophyll catabolites, which represented (formal) oxidation products of two of the observed Pd-NCCs. The chlorophyll catabolites in leaves of plum feature the same basic structural pattern as those found in leaves of apple and pear trees.
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