| pubmed-article:16411951 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:16411951 | lifeskim:mentions | umls-concept:C0038435 | lld:lifeskim |
| pubmed-article:16411951 | lifeskim:mentions | umls-concept:C0525009 | lld:lifeskim |
| pubmed-article:16411951 | lifeskim:mentions | umls-concept:C0029297 | lld:lifeskim |
| pubmed-article:16411951 | lifeskim:mentions | umls-concept:C0037494 | lld:lifeskim |
| pubmed-article:16411951 | lifeskim:mentions | umls-concept:C0542341 | lld:lifeskim |
| pubmed-article:16411951 | lifeskim:mentions | umls-concept:C0052277 | lld:lifeskim |
| pubmed-article:16411951 | pubmed:issue | 3 | lld:pubmed |
| pubmed-article:16411951 | pubmed:dateCreated | 2006-1-17 | lld:pubmed |
| pubmed-article:16411951 | pubmed:abstractText | Arabinogalactan proteins (AGPs) are implicated in cell expansion by unknown mechanisms, thus AGP content and cell-expansion rate might be correlated. We used Yariv reagent to quantify release rates and distribution of AGP at the cell surface of tobacco BY-2 cells: plasma membrane (M); soluble periplasmic AGPs released by cell rupture (S); cell wall (W); and growth medium (Gsink). In contrast to earlier reports, we observed massive upregulation of AGPs in salt-stressed cells, and hence the absence of a simple, direct cause-and-effect relationship between growth rate and AGP release. There was a more subtle connection. A dynamic flux model, M-->S-->W-->Gsink, indicated that turnover was nondegradative, with little free diffusion of AGPs trapped in the pectic matrix of nonadapted cells where transmural migration of high molecular-weight AGPs occurred mainly by plug flow (apposition and extrusion). In contrast, however, an up to sixfold increased AGP release rate in the slower-growing salt-adapted cells indicated a greatly increased rate of AGP diffusion through a much more highly porous pectic network. We hypothesize that classical AGPs act as pectin plasticizers. This explains how beta-D-glycosyl Yariv reagents might inhibit expansion growth by crosslinking monomeric AGPs, and thus mimic an AGP loss-of-function mutation. | lld:pubmed |
| pubmed-article:16411951 | pubmed:commentsCorrections | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:16411951 | pubmed:language | eng | lld:pubmed |
| pubmed-article:16411951 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:16411951 | pubmed:citationSubset | IM | lld:pubmed |
| pubmed-article:16411951 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
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| pubmed-article:16411951 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:16411951 | pubmed:issn | 0028-646X | lld:pubmed |
| pubmed-article:16411951 | pubmed:author | pubmed-author:KieliszewskiM... | lld:pubmed |
| pubmed-article:16411951 | pubmed:author | pubmed-author:LamportDerek... | lld:pubmed |
| pubmed-article:16411951 | pubmed:author | pubmed-author:ShowalterAlla... | lld:pubmed |
| pubmed-article:16411951 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:16411951 | pubmed:volume | 169 | lld:pubmed |
| pubmed-article:16411951 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:16411951 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:16411951 | pubmed:pagination | 479-92 | lld:pubmed |
| pubmed-article:16411951 | pubmed:dateRevised | 2006-11-15 | lld:pubmed |
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| pubmed-article:16411951 | pubmed:meshHeading | pubmed-meshheading:16411951... | lld:pubmed |
| pubmed-article:16411951 | pubmed:year | 2006 | lld:pubmed |
| pubmed-article:16411951 | pubmed:articleTitle | Salt stress upregulates periplasmic arabinogalactan proteins: using salt stress to analyse AGP function. | lld:pubmed |
| pubmed-article:16411951 | pubmed:affiliation | School of Life Sciences, John Maynard Smith Building, University of Sussex, Falmer, Brighton BN1 9QG, UK. d.t.a.Lamport@sussex.ac.uk | lld:pubmed |
| pubmed-article:16411951 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:16411951 | pubmed:publicationType | Research Support, U.S. Gov't, Non-P.H.S. | lld:pubmed |
| pubmed-article:16411951 | pubmed:publicationType | Research Support, Non-U.S. Gov't | lld:pubmed |
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