Nutrition of ovule, embryo sac, and young embryo in soybean: an anatomical and autoradiographic study

dc.contributor.author Chamberlin, Mark
dc.contributor.author Horner, Harry
dc.contributor.author Palmer, Reid
dc.contributor.department Agronomy
dc.contributor.department Botany
dc.date 2018-04-02T21:51:23.000
dc.date.accessioned 2020-06-30T00:54:35Z
dc.date.available 2020-06-30T00:54:35Z
dc.date.issued 1993
dc.description.abstract <p>Photosynthesizing soybean plants were exposed to '"0, to study the incorporation of labeled water-insoluble photosynthates in ovules at various developmental stages. Using autoradiographic techniques on sectioned material, we show that the distribution of labeled carbon in different ovular tissues is regulated spatially and temporally. During zygote through globular stages of embryo development, labeled assimilates accumulate in integumentary tissue adjacent to the micropylar and chalazal poles of the embryo sac. A chalazal vascular trace and two adfunicular vascular strands are the pathways for accumulation of I4C in these regions. Up through the proembryo stage, movement of labeled photoassimilates into the lateral regions of the embryo sac seems blocked by a cuticle-like layer between the endothelium and embryo sac. At the globular embryo stage, the greatest accumulation of label is still at the chalazal and the micropylar ends of the embryo sac, but fragmentation of the cuticle-like barrier coincident with cellularization of endosperm allows channeling of labeled carbon from adjacent integumentary tissue into the embryo sac as well. Autoradiographic evidence for carbon flow into the embryo sac can be correlated with ultrastructural and morphological changes in time in ovular and endosperm tissues enclosing the embryo.</p>
dc.description.comments <p>This article is published by Chamberlin, Mark A., Harry T. Horner, and Reid G. Palmer. "Nutrition of ovule, embryo sac, and young embryo in soybean: an anatomical and autoradiographic study." <em>Canadian Journal of Botany</em> 71, no. 9 (1993): 1153-1168. doi: <a href="http://dx.doi.org/10.1139/b93-136" target="_blank">10.1139/b93-136</a>. </p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/bot_pubs/79/
dc.identifier.articleid 1079
dc.identifier.contextkey 11888952
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath bot_pubs/79
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/11332
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/bot_pubs/79/1993_Horner_NutritionOvule.pdf|||Sat Jan 15 01:55:53 UTC 2022
dc.source.uri 10.1139/b93-136
dc.subject.disciplines Agricultural Science
dc.subject.disciplines Agronomy and Crop Sciences
dc.subject.disciplines Botany
dc.subject.disciplines Plant Biology
dc.subject.disciplines Plant Breeding and Genetics
dc.subject.keywords autoradiography
dc.subject.keywords embryo sac
dc.subject.keywords Glycine
dc.subject.keywords nutrition
dc.subject.keywords ovule
dc.title Nutrition of ovule, embryo sac, and young embryo in soybean: an anatomical and autoradiographic study
dc.type article
dc.type.genre article
dspace.entity.type Publication
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relation.isOrgUnitOfPublication 9ac828da-ca66-4c1f-9f0d-17de747c541e
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