Epicuticular wax on cherry laurel (Prunus laurocerasus) leaves does not constitute the cuticular transpiration barrier

Planta
Viktoria Zeisler, L Schreiber

Abstract

Epicuticular wax of cherry laurel does not contribute to the formation of the cuticular transpiration barrier, which must be established by intracuticular wax. Barrier properties of cuticles are established by cuticular wax deposited on the outer surface of the cuticle (epicuticular wax) and in the cutin polymer (intracuticular wax). It is still an open question to what extent epi- and/or intracuticular waxes contribute to the formation of the transpiration barrier. Epicuticular wax was mechanically removed from the surfaces of isolated cuticles and intact leaf disks of cherry laurel (Prunus laurocerasus L.) by stripping with different polymers (collodion, cellulose acetate and gum arabic). Scanning electron microscopy showed that two consecutive treatments with all three polymers were sufficient to completely remove epicuticular wax since wax platelets disappeared and cuticle surfaces appeared smooth. Waxes in consecutive polymer strips and wax remaining in the cuticle after treatment with the polymers were determined by gas chromatography. This confirmed that two treatments of the polymers were sufficient for selectively removing epicuticular wax. Water permeability of isolated cuticles and cuticles covering intact leaf disks...Continue Reading

References

Jan 29, 2000·International Journal of Plant Sciences·H J EnsikatW Barthlott
Sep 18, 2001·Journal of Experimental Botany·M Riederer, L Schreiber
Feb 18, 2004·Journal of Experimental Botany·Kerstin KochWilhelm Barthlott
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Citations

Apr 26, 2018·American Journal of Botany·Mark FishbeinAaron Liston
Oct 11, 2017·Journal of Experimental Botany·Victoria FernándezThomas Eichert
Mar 28, 2019·FEMS Microbiology Letters·Simisola OsoMitja N P Remus-Emsermann
Dec 11, 2019·International Journal of Molecular Sciences·Kashif MahmoodKosala Ranathunge
Jun 4, 2020·Environmental Geochemistry and Health·Tatyana G KrupnovaAnna V Somova
Feb 8, 2021·Ecotoxicology and Environmental Safety·Nisha ShabnamHyunook Kim
Jul 20, 2021·Frontiers in Plant Science·Mingjie ChenChangsong Chen

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Methods Mentioned

BETA
environmental stress
atomic force microscopy
scanning electron microscopy

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