Linked Life Data

16660898

Source:http://linkedlifedata.com/resource/pubmed/id/16660898

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2010-6-29
pubmed:abstractText
Ice encasement damages cold-hardened winter wheat without major disruption of cellular organelles. CO(2) accumulates during total ice encasement to higher levels in Kharkov than in less hardy Fredrick wheat. Partial ice encasement and exposure to a nitrogen atmosphere at -1 C allows greater CO(2) accumulation but neither treatment is as damaging as total ice encasement. Lactic acid accumulates to low levels only during the 1st day of encasement and thereafter remains constant. Exposure of plants to a combination of 50% CO(2) and 5% ethanol reduces survival, with a cultivar difference similar to that found in ice-encased plants. Plants in CO(2) and ethanol show a proliferation of membranes and nuclear condensation similar to that in cells of ice-encased plants. Permeability increases markedly in the presence of CO(2) and ethanol, to levels similar to or greater than those of iced plants. Ethanol alone does not increase permeability but in combination with CO(2) raises permeability of the less hardy Fredrick, although not of Kharkov, but reduces survival of both cultivars. A comparison of the endogenous levels of ethanol, CO(2), and lactic acid at the 50% kill point of plants due to ice encasement or due to externally supplied metabolite indicates that only CO(2) accumulates to independently toxic levels. Permeability and ultrastructural evidence suggest that CO(2) and ethanol in combination are the agents reducing plant viability during ice encasement.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Jul
pubmed:issn
0032-0889
pubmed:author
pubmed:issnType
Print
pubmed:volume
64
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
120-5
pubmed:dateRevised
2010-9-14
pubmed:year
1979
pubmed:articleTitle
Toxicity of Anaerobic Metabolites Accumulating in Winter Wheat Seedlings during Ice Encasement.
pubmed:affiliation
Chemistry and Biology Research Institute, Agriculture Canada, Ottawa K1A 0C6 Canada.
pubmed:publicationType
Journal Article