Diurnal and developmental changes in levels of nucleotide compounds in developing maize endosperms

dc.contributor.author Scott, M. P.
dc.contributor.author Scott, M. Paul
dc.contributor.department Agronomy
dc.date 2018-02-18T15:01:29.000
dc.date.accessioned 2020-06-29T23:03:09Z
dc.date.available 2020-06-29T23:03:09Z
dc.date.issued 2000-11-01
dc.description.abstract <p>Maize endosperm is dependent on source tissues to supply the energy and carbon required for development. This supply varies during the course of each day and also throughout development. The impact of these variations on the metabolism of developing endosperm was examined by determining the energy status of the endosperm throughout the course of a day. The adenylate energy charge decreased as the tissue matured, and exhibited a distinct diurnal pattern, reaching a minimum in the afternoon, when the flux of photosynthate is the highest. The minimum value observed was similar to the adenylate energy charge in tissues under mild stress. As the endosperm matured, the adenylate energy charge decreased steadily. The levels of the polysaccharide precursors ADP-glucose and UDP-glucose did not reflect the daily fluctuations in adenylate energy charge, but did exhibit similar long-term behaviour in the latter half of development, decreasing steadily after 21 d after pollination. Similarities in the metabolic patterns of adenylate and uridylate nucleotide levels are discussed in terms of the analogous roles of these compounds in starch and cellulose biosynthesis, respectively. These data provide insight into the metabolic rhythms occurring during endosperm development, and provide a framework for efforts directed toward metabolic engineering.</p>
dc.description.comments <p>This article is published as Scott, M. P. (2000), Diurnal and developmental changes in levels of nucleotide compounds in developing maize endosperms. <em>Plant, Cell & Environment</em>, 23: 1281–1286. doi:<a href="http://dx.doi.org/10.1046/j.1365-3040.2000.00627.x" target="_blank">10.1046/j.1365-3040.2000.00627.x</a>.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/agron_pubs/175/
dc.identifier.articleid 1169
dc.identifier.contextkey 10439267
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath agron_pubs/175
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/4505
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/agron_pubs/175/2000_Scott_DiurnalDevelopmental.pdf|||Fri Jan 14 21:24:27 UTC 2022
dc.source.uri 10.1046/j.1365-3040.2000.00627.x
dc.subject.disciplines Agricultural Science
dc.subject.disciplines Agronomy and Crop Sciences
dc.subject.disciplines Plant Breeding and Genetics
dc.subject.keywords Zea mays
dc.subject.keywords adenylate energy charge
dc.subject.keywords endosperm
dc.subject.keywords starch
dc.title Diurnal and developmental changes in levels of nucleotide compounds in developing maize endosperms
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 97acee5f-1291-4c27-8929-a8e1617c411d
relation.isOrgUnitOfPublication fdd5c06c-bdbe-469c-a38e-51e664fece7a
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
304.39 KB
Adobe Portable Document Format