Structural basis of the rind disorder oleocellosis in Washington navel orange (Citrus sinensis L. Osbeck).
Identifieur interne : 000E07 ( PubMed/Checkpoint ); précédent : 000E06; suivant : 000E08Structural basis of the rind disorder oleocellosis in Washington navel orange (Citrus sinensis L. Osbeck).
Auteurs : Tobyg Knight [Australie] ; Andreas Klieber ; Margaret SedgleySource :
- Annals of botany [ 0305-7364 ] ; 2002.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Plant Oils.
- chemistry : Citrus sinensis, Fruit.
- drug effects : Citrus sinensis, Fruit.
- chemical , toxicity : Plant Oils.
- ultrastructure : Citrus sinensis, Fruit.
- Microscopy, Confocal, Microscopy, Electron, Microscopy, Electron, Scanning.
Abstract
Oleocellosis, a physiological rind disorder of citrus fruit, is an unattractive surface blemish caused by phytotoxic effects of released rind oils. The development of oleocellosis in Washington navel orange (Citrus sinensis L. Osbeck) was examined by following a time sequence of surface symptoms and microscopic rind changes. The two natural causes of oleocellosis were simulated: mechanical damage to the fruit and transfer of rind oil between fruit. Mechanical fruit injury resulted in rupture of the epidermis above oil glands. Released surface oil appeared to infiltrate the rind via the ruptured epidermis resulting in rapid degeneration of cortical, but not epidermal, cell contents. Oil application to the rind surface produced a more severe blemish than did mechanical damage. The oil appeared to diffuse through the cuticle causing degeneration of the contents of all cell layers, including the epidermis. Loss of membrane integrity was detected within 30 min, followed by cell content degeneration and cell collapse. The resulting blemish, characterized by rind collapse and darkening, developed substantially within 3 d and was attributed to the cellular damage.
PubMed: 12451032
Affiliations:
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pubmed:12451032Le document en format XML
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<term>Fruit (drug effects)</term>
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<term>Microscopy, Confocal</term>
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<front><div type="abstract" xml:lang="en">Oleocellosis, a physiological rind disorder of citrus fruit, is an unattractive surface blemish caused by phytotoxic effects of released rind oils. The development of oleocellosis in Washington navel orange (Citrus sinensis L. Osbeck) was examined by following a time sequence of surface symptoms and microscopic rind changes. The two natural causes of oleocellosis were simulated: mechanical damage to the fruit and transfer of rind oil between fruit. Mechanical fruit injury resulted in rupture of the epidermis above oil glands. Released surface oil appeared to infiltrate the rind via the ruptured epidermis resulting in rapid degeneration of cortical, but not epidermal, cell contents. Oil application to the rind surface produced a more severe blemish than did mechanical damage. The oil appeared to diffuse through the cuticle causing degeneration of the contents of all cell layers, including the epidermis. Loss of membrane integrity was detected within 30 min, followed by cell content degeneration and cell collapse. The resulting blemish, characterized by rind collapse and darkening, developed substantially within 3 d and was attributed to the cellular damage.</div>
</front>
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<Abstract><AbstractText>Oleocellosis, a physiological rind disorder of citrus fruit, is an unattractive surface blemish caused by phytotoxic effects of released rind oils. The development of oleocellosis in Washington navel orange (Citrus sinensis L. Osbeck) was examined by following a time sequence of surface symptoms and microscopic rind changes. The two natural causes of oleocellosis were simulated: mechanical damage to the fruit and transfer of rind oil between fruit. Mechanical fruit injury resulted in rupture of the epidermis above oil glands. Released surface oil appeared to infiltrate the rind via the ruptured epidermis resulting in rapid degeneration of cortical, but not epidermal, cell contents. Oil application to the rind surface produced a more severe blemish than did mechanical damage. The oil appeared to diffuse through the cuticle causing degeneration of the contents of all cell layers, including the epidermis. Loss of membrane integrity was detected within 30 min, followed by cell content degeneration and cell collapse. The resulting blemish, characterized by rind collapse and darkening, developed substantially within 3 d and was attributed to the cellular damage.</AbstractText>
<CopyrightInformation>Copyright 2002 Annals of Botany Company</CopyrightInformation>
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