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PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
1999-12-10
pubmed:abstractText
Luteoviruses such as beet western yellows polerovirus (BWYV) are confined to and multiply within the phloem compartment of their hosts. The readthrough domain (RTD) of the minor BWYV capsid protein P74 is required for efficient virus accumulation in Nicotiana clevelandii. Experiments were carried out to determine if the low virus titres observed following agro-inoculation of whole plants with certain RTD mutants are due to a defect in virus multiplication in the nucleate cells of the phloem compartment or to inefficient virus movement to new infection sites. Immuno-localization of wild-type and an RTD-null mutant virus in thin sections of petioles and in phloem cells of leaf lamina, as well as electron microscopy observations, were all consistent with the conclusion that the RTD is not essential for efficient virus multiplication in the nucleate phloem cells but intervenes in virus movement to increase the rate at which new infection foci are established and expand.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0022-1317
pubmed:author
pubmed:issnType
Print
pubmed:volume
80 ( Pt 10)
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2771-8
pubmed:dateRevised
2001-11-28
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Role of the beet western yellows virus readthrough protein in virus movement in Nicotiana clevelandii.
pubmed:affiliation
Institut de Biologie Moléculaire des Plantes du CNRS et de l'Université Louis Pasteur, Strasbourg, France.
pubmed:publicationType
Journal Article