Differentiation Between Tissues from Carnation (Dianthus caryophyllus) Stems by Pyrolysis-Mass Spectrometry |
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Authors: | NIEMANN G J; BAAYEN R P; BOON J J |
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Institution: | * Willie Commelin Scholten Phytopathological Laboratory Javalaan 20, 3742 CP Baarn, The Netherlands
FOM Institute for Atomic and Molecular Physics Kruislaan 407, 1098 SJ Amsterdam, The Netherlands |
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Abstract: | Small pieces of different tissues from stems of young and oldcarnation plants were analyzed for lignification (lignin/celluloseratios) and lignin composition by means of pyrolysis-(gas chromatography)-massspectrometry. The epidermis and phloem of young and old stemswere essentially non-lignified. Pith parenchyma was only lignifiedin mature and senescing tissues. The type of lignin in sclerenchymadiffered from that in xylem and pith. Lignification in the xylemof very young tissues was a mainly guaiacyl-type lignin, whichgradually changed into a mixed guaiacyl-syringyl lignin in oldertissues. In mature tissues, the sclerenchyma was more highlylignified than the xylem. All tissues yielded comparatively large amounts of dihydroferulicacid, a compound which may be specific for carnation. Carnation, Dianthus caryophyllus, epidermis, cortex, sclerenchyma, phloem, xylem, pith, lignification, aging, dihydroferulic acid, pyrolysis-(gas chromatography)-mass spectrometry |
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