Linked Life Data

16663547

Source:http://linkedlifedata.com/resource/pubmed/id/16663547

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2010-6-29
pubmed:abstractText
Partial digestion of polygalacturonic acid with polygalacturonase isolated from Rhizopus stolonifer produces a mixture of alpha-1,4-d-galacturonide oligomers which act to elicit casbene synthetase activity in castor bean (Ricinus communis L). These oligomers were separated by anion exchange chromatography on DEAE Sephadex A-25 into discrete sizes and their degrees of polymerization were analyzed by fast atom bombardment mass spectrometry. A minimum degree of polymerization of nine units appears to be required for elicitor activity; trideca-alpha-1,4-d-galacturonide was the most active of the oligomers tested. Methyl-esterification of the carboxylate groups greatly diminishes the elicitor activity of the oligomers, a finding which suggests a requirement for the polyanionic character of the oligomers for full activity. The fact that a number of other polyanionic polymers tested as casbene synthetase elicitors did not show significant activity indicates that structural features other than the polyanionic character are also necessary for activity.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Apr
pubmed:issn
0032-0889
pubmed:author
pubmed:issnType
Print
pubmed:volume
74
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
989-92
pubmed:dateRevised
2010-9-14
pubmed:year
1984
pubmed:articleTitle
Characteristics of galacturonic Acid oligomers as elicitors of casbene synthetase activity in castor bean seedlings.
pubmed:affiliation
Department of Chemistry and Biochemistry, University of California-Los Angeles, Los Angeles, California 90024.
pubmed:publicationType
Journal Article