COMPARATIVE ULTRASTRUCTURAL STUDY OF THE DEGRADATION IN SOIL OF ISOLATED CUTIN FROM <i>ILEX</i> LEAVES AND <i>MALUS</i> FRUIT

Macnamara, O. C.; Beakes, Gordon W.; Dickinson, Claire

doi:10.1111/j.1469-8137.1983.tb03447.x

Cited by 4 publications

(2 citation statements)

References 22 publications

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“…The microstructures present on the outer cuticle surface have been observed in intact F. elastica leaves and have been referred to as ‘wax glands’ (Klimko and Truchan ) or ‘granules’ (Kim ). Finally, the granulated pattern observed on the inner surface of the isolated leaf cuticles has been also reported for other species ( MacNamara et al , Guzmán et al ).…”

Section: Discussionsupporting

confidence: 79%

The presence of cutan limits the interpretation of cuticular chemistry and structure: Ficus elastica leaf as an example

Guzmán‐Delgado

Graça

Cabral

et al. 2016

Physiologia Plantarum

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Plant cuticles have been traditionally classified on the basis of their ultrastructure, with certain chemical composition assumptions. However, the nature of the plant cuticle may be misinterpreted in the prevailing model, which was established more than 150 years ago. Using the adaxial leaf cuticle of Ficus elastica, a study was conducted with the aim of analyzing cuticular ultrastructure, chemical composition and the potential relationship between structure and chemistry. Gradual chemical extractions and diverse analytical and microscopic techniques were performed on isolated leaf cuticles of two different stages of development (i.e. young and mature leaves). Evidence for the presence of cutan in F. elastica leaf cuticles has been gained after chemical treatments and tissue analysis by infrared spectroscopy and electron microscopy. Significant calcium, boron and silicon concentrations were also measured in the cuticle of this species. Such mineral elements which are often found in plant cell walls may play a structural role and their presence in isolated cuticles further supports the interpretation of the cuticle as the most external region of the epidermal cell wall. The complex and heterogeneous nature of the cuticle, and constraints associated with current analytical procedures may limit the chance for establishing a relationship between cuticle chemical composition and structure also in relation to organ ontogeny.

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Section: Discussionsupporting

confidence: 79%

The presence of cutan limits the interpretation of cuticular chemistry and structure: Ficus elastica leaf as an example

Guzmán‐Delgado

Graça

Cabral

et al. 2016

Physiologia Plantarum

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“…The slow decay process of the peat-forming mosses, Sphagnum fuscum and Sphagnum papillosum, involves considerable accumulation of polymerized lipids (Karunen and , Karunen et al 1982. Lipid polymers are apparently highly resistant towards biodegradation and erosion compared with many other plant products (Koiattukudy 1980a, McNamara et al 1983., In order to compare the changes in lipid polymer patterns of the forest mosses with those of the peatforming mosses during their growth, senescence and decay, the contents of polymerized lipids in P. schreberi and H. splendens were investigated in shoot segments of increasing age. The samples ranged from top-most green segments to the oldest segments cotnposed of already partly decomposed tissues.…”

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confidence: 99%

Age‐related contents of polymerized lipids in the ectohydric forest mosses Pleurozium schreberi and Hylocomium splendens

Kälviäinen

Karunen

Ekman

1985

Physiologia Plantarum

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R. 1985. Age-related contents of polymerized lipids in the ectohydric forest mosses, Pleurozium schreberi and Hylocomium splendens. -Physiol. Plant. 65: 269^274.Cell wall preparations of the ectohydric forest mosses, Pteurozium schreberi (Brid.) Mitt, and Hylocomium splendens (Hedw.) B. S. G. contain polymerized lipids consisting of hydroxy acids, dicarboxylic acids, fatty acids, fatty alcohols and unidentified components. The finding of polymerized lipids in ectohydric mosses, which have highly permeable cell wails, indicates that the polymers do not form an effective barrier against water and nutrients, at least not in the cell walls of these mosses. The youngest parts of P. schreberi and H. splendens contained 2.0 and 1.6 mg polymerized lipids, respectively, OB a dry cell wall weight basis. In the senescent, greyish-green parts of P. schreberi and in the one-year-old shoot tissue of H. splendens the corresponding amounts were about 1.5-fold. In both species the increase was due to increases in hydroxy aeids, particularly dihydroxyhexadeeanoic adds, dicarboxylic acids, unknown components and, in the case of H. splendens, also an increase in fatty acids. The increase may be related to the maturation of the cell walls. In still older shoot parts the amounts of polymerized lipids decreased in both species, and remained low until final decay of the tissues into small particles. A slight increase in the amount of the polymerized lipid monomers was found in the oldest and most decomposed parts of H. splendens, probably indicating a better resistance to decay than for other cell wall components. These findings are discussed in relation to what is known from the ectohydric peat-forming Sphagnum mosses.Additional key words -Cell wall, decomposition, dicarboxylic acids, fatty acids, fatty alcohols, hydroxy acids, maturation.E. Kalviainen and P., Karunen (reprint requests),

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In vitro degradation of Ilex aquifolium leaf cutin by phylloplane fungi

Dickinson

Macnamara

1983

Transactions of the British Mycological Society

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COMPARATIVE ULTRASTRUCTURAL STUDY OF THE DEGRADATION IN SOIL OF ISOLATED CUTIN FROM ILEX LEAVES AND MALUS FRUIT

Cited by 4 publications

References 22 publications

The presence of cutan limits the interpretation of cuticular chemistry and structure: Ficus elastica leaf as an example

The presence of cutan limits the interpretation of cuticular chemistry and structure: Ficus elastica leaf as an example

Age‐related contents of polymerized lipids in the ectohydric forest mosses Pleurozium schreberi and Hylocomium splendens

In vitro degradation of Ilex aquifolium leaf cutin by phylloplane fungi

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