Journal ArticleDOI
Leaf wax of oats.
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TLDR
Leaf wax of oats (Kelsey variety) consists of hydrocarbons (5%), esters (10%), free alcohols (45%), free acids (2.5%), β-diketone (5.5), hydroxy-β- diketones (2,5%), and unidentified (29%).Abstract:
Leaf wax of oats (Kelsey variety) consists of hydrocarbons (5%), esters (10%), free alcohols (45%), free acids (2.5%), β-diketone (5.5%), hydroxy-β-diketones (2.5%), and unidentified (29%). Wax on leaf blades contains more free alcohols than wax on leaf sheaths, and wax on the flag leaf sheath contains more β-diketone than wax on the rest of the plant. Principal hydrocarbons are C29, C31, and C33. The esters, mainly C44-C48 and C52, are probably C18-C22 and C26 esters of hexacosanol. Free alcohols are almost entirely hexacosanol. The β-diketone is hentriacontane-14, 16-dione. Hydroxy β-diketones are a mixture of 5-, 6- and 7-hydroxyhentriacontane-14, 16-diones in the proportions 58∶35∶7. The wax also contains a small amount (0.5%) of 1,16-hexacosanediol.read more
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Book ChapterDOI
Cutin, suberin, and waxes
TL;DR: In this article, the authors present a methodology that is useful for examining waxes and polymerized lipids and explain their biosynthesis, degradation, and possible functions, as well as the types of compounds found in plant waxes.
Journal ArticleDOI
Effects of Water Stress on Cuticular Transpiration Rate and Amount and Composition of Epicuticular Wax in Seedlings of Six Oat Varieties
TL;DR: In this paper, six oat varieties (Stormogul II, Risto, Sol II, Selma, Sang and Pendek, arranged according to decreasing drought resistance) were cultivated under controlled conditions and exposed to water stress on 4 consecutive days.
Journal ArticleDOI
Aphid responses to non-host epicuticular lipids
TL;DR: Epicuticular lipids play an important role in the early stages of host-plant selection by A. fabae and are applied to artificial (glass) substrates in order to investigate their behavioural activity.
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The role of the abaxial leaf surface waxes of Lolium spp in resistance to Erysiphe graminis.
TL;DR: Observations of Lolium spp.
Journal ArticleDOI
Organic geochemical evidence for the origin of ancient anthropogenic soil deposits at Tofts Ness, Sanday, Orkney
TL;DR: In this paper, the combined assessment of lipid distributional and compound specific stable carbon isotope data enabled the identification of grass turves as the most probable material used in the formation of the anthropogenic soil deposits.
References
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Journal ArticleDOI
Leaf Epicuticular Waxes
G. Eglinton,Richard J. Hamilton +1 more
TL;DR: Enzymic studies, radiolabeling, and electron microscopy will be needed to reveal the mode of biogenesis of the wax constituents and their site of formation and subsequent pathway through the cuticle to the leaf surface.
Journal ArticleDOI
Nuclear Magnetic Resonance Spectroscopy. Carbon-13 Chemical Shifts in Acyclic and Alicyclic Alcohols
TL;DR: In this article, the chemical shifts of a variety of acyclic and alicyclic alcohols have been determined by high resolution spectroscopy with the aid of proton decoupling.
Journal ArticleDOI
The fermentation of long-chain compounds by torulopsis magnoliae: i. structures of the hydroxy fatty acids obtained by the fermentation of fatty acids and hydrocarbons
TL;DR: The yield of extracellular glycolipid produced by Torulopsis magnoliae is increased three to fivefold by the addition of suitable compounds to the growing culture as mentioned in this paper.
Journal ArticleDOI
The composition of Eucalyptus and some other leaf waxes
TL;DR: The most commonly occurring β-diketone is n-tritriacontan-16,18-dione, but in two species, Eucalyptus risdoni and E. coccifera, β-Diketones of shorter chain length predominate as mentioned in this paper.
Journal ArticleDOI
Composition of leaf surface waxes of Triticum species: Variation with age and tissue☆
TL;DR: From 66 to 100 days ester content of wax increases, especially in Selkirk wheat, apparently due to formation of wax containing high proportions of esters of trans-α,β-unsaturated C22 and C24 acids.