Linked Life Data

8870272

Source:http://linkedlifedata.com/resource/pubmed/id/8870272

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
8
pubmed:dateCreated
1996-12-31
pubmed:abstractText
The interaction between Arabidopsis and the nepovirus tobacco ringspot virus (TRSV) was characterized. Of 97 Arabidopsis lines tested, all were susceptible when inoculated with TRSV grape strain. Even though there was systemic spread of the virs, there was a large degree of variation in symptoms as the most sensitive lines died 10 days after inoculation, while the most tolerant lines either were symptomless or developed only mild symptoms. Four lines were selected for further study based on their differential reactions to TRSV. Infected plants of line Col-0 and Col-0 gl1 flowered and produced seeds like noninfected plants, while those of lines Estland and H55 died before producing seeds. Symptoms appeared on sensitive plants approximately 5 to 6 days after inoculation. Serological studies indicated that in mechanically inoculated seedlings, the virus, as measured by coat protein accumulation, developed at essentially the same rates and to the same levels in each of the four lines, demonstrating that differences in symptom development were not due to a suppression of virus accumulation. Two additional TRSV strains gave similar results when inoculated on the four lines. Genetic studies with these four Arabidopsis lines revealed segregation of a single incompletely dominant locus controlling tolerance to TRSV grape strain. We have designated this locus TTR1. By using SSLP and CAPS markers, TTR1 was mapped to chromosome V near the nga129 marker. Seed transmission frequency of TRSV for Col-0 and Col-0 gl1 was over 95% and their progeny from crosses all had seed transmission frequencies of over 83%, which made it possible to evaluate the segregation of TTR1 in F2 progeny from infected F1 plants without inoculating F2 plants. Seed transmission of TRSV will be further exploited to streamline selection of individuals for fine mapping the TTR1 gene. The identification of tolerant and sensitive interactions between TRSV and A. thaliana lines provides a model system for genetic and molecular analysis of plant tolerance to virus infection.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0894-0282
pubmed:author
pubmed:issnType
Print
pubmed:volume
9
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
729-35
pubmed:dateRevised
2000-12-18
pubmed:meshHeading
pubmed:year
1996
pubmed:articleTitle
Identification and map location of TTR1, a single locus in Arabidopsis thaliana that confers tolerance to tobacco ringspot nepovirus.
pubmed:affiliation
Physiological and Molecular Plant Biology Program, USDA, Agricultural Research Service, Urbana, Il., USA.
pubmed:publicationType
Journal Article