Linked Life Data

16664821

Source:http://linkedlifedata.com/resource/pubmed/id/16664821

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2010-6-29
pubmed:abstractText
Adenylate energy charge (AEC) and adenine nucleotide levels of isolated winter wheat (Triticum aestivum L. cv Kharkov 22 MC) cells exposed to various low temperature stresses were determined. During ice encasement at -1 degrees C, nucleotide levels decreased gradually in approximate relation to a decline in cell viability. AEC values remained high even after 5 weeks of icing when cell viability was severely reduced. When isolated cell suspensions were exposed to various cooling and freezing regimes ranging from -10 to -30 degrees C, cell damage was dependent on the minimum temperature imposed and the duration of exposure to the freezing stress. The levels of all three adenine nucleotides declined with increasing severity of the imposed stress, but AEC values remained high even at -30 degrees C when nearly all of the cells were killed. The addition of 10 millimolar Ca(2+) to cell suspensions enhanced survival during low temperature stresses, but did not influence nucleotide levels other than through its effect on cell viability. These results indicate that impairment of the ion transport system during the early stages of ice encasement prior to a detectable decline in cell viability cannot be attributed to changes in the adenylate energy charge system of the cell.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Jun
pubmed:issn
0032-0889
pubmed:author
pubmed:issnType
Print
pubmed:volume
81
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
361-6
pubmed:dateRevised
2010-9-15
pubmed:year
1986
pubmed:articleTitle
Changes in adenine nucleotides and energy charge in isolated winter wheat cells during low temperature stress.
pubmed:affiliation
Chemistry and Biology Research Institute, Research Branch, Agriculture Canada, Ottawa, Ontario K1A 0C6 Canada.
pubmed:publicationType
Journal Article