Linked Life Data

15000249

Source:http://linkedlifedata.com/resource/pubmed/id/15000249

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
Pt 12
pubmed:dateCreated
2004-3-5
pubmed:abstractText
Rhynchosporium secalis isolates E97-2 and H97-2, represented the major pathotypes in populations on barley in Alberta, Canada, but differed widely in their virulence. Following greenhouse co-inoculation with the two pathotypes, E97-2, originally isolated from resistant cv. 'CDC Earl', predominated over H97-2, isolated from the susceptible cv. 'Harrington', from the first to the last of four infection cycles on both 'CDC Earl' and 'Harrington'. These results indicated that the host can rapidly influence pathotype composition and that pathotype E97-2 may have a competitive advantage over H97-2 on these cultivars. DNA polymorphisms were found between isolates from single or mixed inoculations on cvs 'CDC Earl' and 'Harrington' for four successive cycles. Co-inoculation with the two isolates resulted in a shift to a molecular phenotype more similar to E97-2 than H97-2. The competitive advantage of E97-2 over H97-2, combined with the selective pressure exerted by the host, would explain the increased susceptibility of cv. 'CDC Earl' and other cultivars with similar sources of scald resistance, in fields across Alberta. However, H97-2 will likely remain one of the major pathotypes in Alberta due to the relatively large acreage of cv. 'Harrington' in this province.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0953-7562
pubmed:author
pubmed:issnType
Print
pubmed:volume
107
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1485-92
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Dynamics of Rhynchosporium secalis pathotypes in relation to barley cultivar resistance.
pubmed:affiliation
Alberta Agriculture, Field Crop Development Centre, Lacombe, Canada. kequan.xi@gov.ab.ca
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't