Linked Life Data

11537505

Source:http://linkedlifedata.com/resource/pubmed/id/11537505

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1995-5-10
pubmed:abstractText
Ultrastructural analyses of the cell walls from top and bottom halves of gravistimulated pulvini from oat leaves show a decrease in the density of material within the cell walls from the lower halves of pulvini after 24 h of gravistimulation. Assays of cellulose synthesis with a 14C-sucrose pulse-chase experiment indicate no difference in the amount of new cellulose synthesized in top compared with bottom halves of gravistimulated pulvini. The highest rate of cellulose synthesis occurs with 12-24 h of gravistimulation. Treatment of graviresponding pulvini with 2,6-dichlorobenzonitrile (DCBN) had only a minor effect on segment gravitropic curvature. We also found that there is no difference in the activities of either glucan synthase I or glucan synthase II in top halves as compared with bottom halves of gravistimulated pulvini. We conclude that the graviresponse in oat stems is not driven by new cell wall synthesis but, rather, by changes in cell wall plasticity and osmotic potential.
pubmed:keyword
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
S
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1058-5893
pubmed:author
pubmed:issnType
Print
pubmed:volume
153
pubmed:owner
NASA
pubmed:authorsComplete
Y
pubmed:pagination
164-70
pubmed:dateRevised
2007-7-17
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
Changes in the ultrastructure of cell walls, cellulose synthesis, and glucan synthase activity from gravistimulated pulvini of oat (Avena sativa).
pubmed:affiliation
Department of Biology, University of Michigan, Ann Arbor 48109-1048.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S.