ULTRASTRUCTURE, CHEMICAL COMPOSITION, AND RECRYSTALLIZATION OF EPICUTICULAR WAXES : TRANSVERSELY RIDGED RODLETS
作者： Iris Meusel , Christoph Neinhuis , Claus Markstädter , Wilhelm Barthlott
DOI: 10.1139/B98-229
关键词: Wax 、 Aristolochiales 、 Biology 、 Botany 、 Chemical composition 、 Ultrastructure 、 Recrystallization (metallurgy) 、 Laurales 、 Crystallization 、 Magnoliales
摘要: Transversely ridged rodlets (Aristolochia-type) are of high systematic significance characterizing the ancestral Aristolochiales, Magnoliales, and Laurales. Sporadically, they also occur in various unrelated derived taxa. The ultrastructure, chemistry, recrystallization epicuticular waxes nine species were investigated by resolution scanning electron microscopy, gas chromatography, mass spectrometry. Chemical analyses show that transversely clearly differ their composition. Waxes one group characterized ketones, whereas a second completely lacks ketones is dominated alkanes. Hentriacontan-16-one (palmitone) was found to be characteristic for Aristolochia, Laurus, Paeonia. Standard solutions taken experiments under different conditions solvent, crystallization velocity, temperature. It shown or related crystals grow from total all but never crystallize individual compounds such as alkanes palmitone. We concluded formed self-assembly based on slow process presence additives. This paper shows convergently within angiosperms similar mode chemical role palmitone chemotaxonomic character discussed.
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