Developmental changes in the inner epidermis of the bean seed coat

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dc.contributor.authorCavey, Michael J.en
dc.contributor.authorYeung, E.C.en
dc.contributor.departmentBiological Sciencesen
dc.contributor.facultyFaculty of Scienceen
dc.contributor.institutionUniversity of Calgaryen
dc.date.accessioned2006-08-14T21:05:06Z
dc.date.available2006-08-14T21:05:06Z
dc.date.issued1990
dc.description.abstractThe inner epidermis of the bean seed coat shows remarkable structural changes during seed development. At the globular stage of development, a moderately electron-dense substance begins to accumulate in the outer tangential and radial walls of the cells. The staining and fluorescence characteristics, together with the localization ofperoxidase in the wall, suggest that this electron-dense material is a phenolic substance. At the same stage of embryo development, structural specialization can be detected in the cytoplasm of the epidermal cells with an increase in the abundance of organelles, especially the endoplasmic reticulum, mitochondria, and dictyosomes. These structural features are similar to those in the underlying branched parenchyma cells. As the seed rapidly expands during the maturation stage of embryo development, the epidermal cells and the inner layers of the branched parenchyma cells begin to degenerate. Small ruptures can be detected in the epidermis, exposing the branched parenchyma cells. These structural changes are discussed in relation to their possible functions during embryo development.en
dc.description.refereedyesen
dc.description.sponsorshipDepartment of Biological Sciences, The University of Calgary, Calgary, Albertaen
dc.format.extent4001232 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.citationE. C. Yeung and M. J. Cavey "Developmental changes in the inner epidermis of the bean seed coat" Protoplasma (1990) 154:45-52en
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/35098
dc.identifier.issn0033-183X
dc.identifier.urihttp://hdl.handle.net/1880/43420
dc.language.isoenen
dc.publisherSpringer-Verlagen
dc.publisher.urlhttp://www.springerlink.com/content/1615-6102/
dc.subjectBiologyen
dc.subject.otherPhaseolusen
dc.subject.otherBeanen
dc.subject.otherSeed coaten
dc.subject.otherInner epidermisen
dc.titleDevelopmental changes in the inner epidermis of the bean seed coaten
dc.typejournal article
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