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Phenols and bud dormancy
Author(s) -
CODIGNOLA ARNALDO,
MAFFEI MASSIMO,
FIESCHI MAURIZIO
Publication year - 1988
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1988.tb00285.x
Subject(s) - primordium , dormancy , fagus sylvatica , chlorogenic acid , botany , biology , vanillic acid , phenols , chemistry , biochemistry , food science , beech , germination , gene
summary Qualitative analyses of the endogenous phenols of Fagus sylvatica L. were determined separately in leaf primordia and bud scales of dormant buds (apical, subapical and basal) of Fagus sylvatica L. until bud burst. Qualitative analyses in all leaf primordia showed the presence of phenols which are potential cofactors of IAA oxidase (vanillic acid, 2′4,4′‐trihydroxychalcone), uncoupling agents of oxidative phosphorylation (norwogonin, orobol 7‐O‐rhamnoglucoside, baicalin, 2′4,4′‐trihydroxychalcone and chlorogenic acid), a synergic stimulator of IAA (chlorogenic acid) and others. In all bud scales the qualitative phenol composition includes a mixture of potential IAA oxidase cofactors (vanillic acid and 2′,4,4′‐trihydroxychalcone), uncoupling agents (baicalin and 2′,4,4′‐trihydroxychalcone) and other compounds. In both leaf primordia and bud scales, the qualitative phenol composition does not change significantly during dormancy. These data do not indicate correlations between phenolic matabolism in bud scales and leaf primordia or between single phenolic compounds and the inception and maintenance of dormancy.