Conifeiyl alcohol

McDougall G.J. (2001) Cell-wall proteins from stika spruce xylem are selectively insolubilised during formation of dehydrogenation polymers of conifeiyl alcohol // Phytochem V. 57. P. 157-163. 

Culture media partially optimized for P. chrysosporium (50) unless otherwise indicated, nmol/min. measured at room temperature per mg dry mycelial weight for vanillylacetoneas a Mn -dependent peroxidase substrate and veratiyl alcohol as a lignin peroxidase substrate 0 denotes activity below detectable limit while — indicates assay not performed. Time, at 39 C for P. chrysosporium or at 30 C for L edodes, after inoculation when maximum activity appears (d ). Interval over which C02 evolution from dehydrogenative polymerizate (DHP) of [ring- /- C]conifeiyl alcohol is measured (days after inoculation). Culture media partially optimized for L. edodes at 22 C (83). 

Coniterin in. sap of coniferous trees C K,H 20 i 185 glucose conifeiyl alcohol... 

Biosynthesis. The primary precursors of L. are con-iferyl, sinapyl and p-coumaiyl alcohoi, which are derived from 4-hydroxycinnamic acid. L. from conifers (i. e. from softwood) is derived chiefly from conifeiyl alcohol with variable but small proportions of sinapyl and p-coumaryl alcohol. L. from dicotyledonous an-giosperms (i.e. from hardwood), particularly deciduous trees, is formed chiefly from sinapyl (-44%) and coniferyl (-48 %) alcohol, with about 8 % p-cou-maryl alcohol. L. in grasses is formed from p-coumar-yl (-30%), coniferyl (-50%) and sinapyl (-20%) alcohol. These primary L. precursors are formed from the aromatic amino acids L-phenylalanine and L-tyro-sine by a series of reactions shown (Rg.). The first reaction is catalysed by L-Phenylalanine ammonia-lyase (EC 4.3.1.5) (see) this enzyme is induced by light in a process involving phytochrome, and it is of general importance in the synthesis of plant phenolic compounds from phenylalanine and tyrosine. 

Hapiot P, Pinson J, Neta P, Francesch C, Mhamdi F, Rolando C, Schneider S. Mechanism of oxidative couphng of conifeiyl alcohol. Ph) tochemistry 1994 36 1013-1020. 

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