Linked Life Data

2333282

Source:http://linkedlifedata.com/resource/pubmed/id/2333282

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
1990-6-6
pubmed:abstractText
We previously demonstrated, in transgenic tobacco plants, that the role of the movement protein (MP) of tobacco mosaic virus is to facilitate the cell-to-cell spread of viral progeny during infection. An analysis of different tissues of these transgenic plants indicated that the MP accumulated in leaf, stem, and root tissue. The highest levels were detected in older leaves. The relative levels of MP in leaf tissue from transgenic plants were equivalent to, or higher than, the levels of MP in tobacco mosaic virus-infected leaf tissue. Results of subcellular fractionation of homogenates of transgenic leaf tissue showed that the MP was most abundant in the cell wall fraction of older leaves and that the protein remained at high levels in the cell wall fraction as the leaves continued to age. Significant levels of the MP were detected in a crude membrane/organelle fraction and a soluble fraction in younger leaves but decreased to low levels in older leaves. These results suggest that the MP accumulates and is stable in cell walls. We have previously shown that the MP modifies the molecular exclusion limit of plasmodesmata, which is consistent with the hypothesis that plant viruses move from cell to cell through altered plasmodesmata. We show here that the ability of the tobacco mosaic virus MP to modify the molecular exclusion limit of plasmodesmata in tobacco depends on the developmental stage of the leaf. The implications of these findings on understanding virus movement and how plasmodesmata function are discussed.
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/2333282-15981328, http://linkedlifedata.com/resource/pubmed/commentcorrection/2333282-16453793, http://linkedlifedata.com/resource/pubmed/commentcorrection/2333282-16552920, http://linkedlifedata.com/resource/pubmed/commentcorrection/2333282-17794341, http://linkedlifedata.com/resource/pubmed/commentcorrection/2333282-2535549, http://linkedlifedata.com/resource/pubmed/commentcorrection/2333282-3327686, http://linkedlifedata.com/resource/pubmed/commentcorrection/2333282-3974711, http://linkedlifedata.com/resource/pubmed/commentcorrection/2333282-5432063, http://linkedlifedata.com/resource/pubmed/commentcorrection/2333282-6036529, http://linkedlifedata.com/resource/pubmed/commentcorrection/2333282-6985872, http://linkedlifedata.com/resource/pubmed/commentcorrection/2333282-936472
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0027-8424
pubmed:author
pubmed:issnType
Print
pubmed:volume
87
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3284-8
pubmed:dateRevised
2010-9-9
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Molecular characterization and biological function of the movement protein of tobacco mosaic virus in transgenic plants.
pubmed:affiliation
Department of Biology, Washington University, Saint Louis, MO 63130.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't