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Date: Thu, 21 Jul 2011 10:51:27 -0300<br>
To: todos@cerebro.fbmc.fcen.uba.ar<br>
From: Patricia Iwanczyszyn <patriciaiwan@fbmc.fcen.uba.ar><br>
Subject: [Todos] Seminario IFBYNE Dr. S. Mongrand- Membrane rafts in
plants,<br>
structure, evidence and role- Jueves 21 de julio 13 hs<br>
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<font size=4>Aula Seminarios IFIBYNE<br><br>
Jueves 21 de julio 13 hs.<br><br>
Título: " Membrane rafts in plants, structure, evidence and
role"<br><br>
Dr. Sebastien Mongrand<br><br>
Laboratorio de Biogénesis de membranas<br><br>
Universidad de Bordeaux<br>
Bordeaux, Francia<br><br>
</font>Key studies have contributed to reveal the structure, composition
and possible functions of membrane raft domains in plants. By immunogold
labeling, we recently evidenced that lateral segregation of lipids
(polyphosphoinositide (4,5) bisphosphate) and proteins (REMORIN,
the first identified plant raft marker) found enriched in
Detergent-Insoluble Membranes (DIM), indeed exists at the nanoscale level
in plant plasma membrane (PM), making a strong correlation between
DIM and rafts. « Omic » analyses have revealed that a high proportion of
proteins and lipids associated with DIM may be involved in signalling
pathways. Also our recent data suggest that the PM lining plasmodesma
(PD) may have similar properties to rafts. Can rafts distribute between
the different membrane sub-domains? Quantitative proteomics reveals a
dynamic association of proteins to DIM upon elicitor signaling in tobacco
cells. A role for plant rafts as signal transduction platforms, similar
to those documented for mammalian cells, and in cell-to-cell
communication through PD is starting to emerge. <br>
<br><br>
<br><br>
Mongrand S, Stanislas T, Bayer EM, Lherminier J, Simon-Plas F. Membrane
rafts <br><br>
in plant cells. Trends Plant Sci. 2010 Dec;15(12):656-63.Review.<br><br>
<br>
Furt F, König S, Bessoule JJ, Sargueil F, Zallot R, Stanislas T, Noirot
E,<br><br>
Lherminier J, Simon-Plas F, Heilmann I, Mongrand S. Polyphosphoinositides
are<br><br>
enriched in plant membrane rafts and form microdomains in the plasma
membrane.<br><br>
Plant Physiol. 2010 Apr;152(4):2173-87. <br><br>
<br>
Lefebvre B, Timmers T, Mbengue M, Moreau S, Hervé C, Tóth K,
Bittencourt-Silvestre J, Klaus D, Deslandes L, Godiard L, Murray JD,
Udvardi MK, Raffaele S, Mongrand S, Cullimore J, Gamas P, Niebel A, Ott
T. A remorin protein interacts with symbiotic receptors and regulates
bacterial infection. Proc Natl Acad Sci U S A. 2010 Feb 2;107(5):2343-8.
<br><br>
<br>
Raffaele S, Bayer E, Lafarge D, Cluzet S, German Retana S, Boubekeur
T,<br><br>
Leborgne-Castel N, Carde JP, Lherminier J, Noirot E, Satiat-Jeunemaître
B,<br><br>
Laroche-Traineau J, Moreau P, Ott T, Maule AJ, Reymond P, Simon-Plas F,
Farmer<br><br>
EE, Bessoule JJ, Mongrand S. Remorin, a solanaceae protein resident in
membrane<br><br>
rafts and plasmodesmata, impairs potato virus X movement. Plant Cell.
2009<br><br>
May;21(5):1541-55<br><br>
<br>
Roche Y, Gerbeau-Pissot P, Buhot B, Thomas D, Bonneau L, Gresti J,
Mongrand S,<br><br>
Perrier-Cornet JM, Simon-Plas F. Depletion of phytosterols from the plant
plasma <br><br>
membrane provides evidence for disruption of lipid rafts. FASEB J.
2008<br><br>
Nov;22(11):3980-91<br><br>
<br>
Lin SS, Martin R, Mongrand S, Vandenabeele S, Chen KC, Jang IC, Chua
NH.<br><br>
RING1 E3 ligase localizes to plasma membrane lipid rafts to trigger
FB1-induced<br><br>
programmed cell death in Arabidopsis. Plant J. 2008 Nov;56(4):550-61.
Epub 2008<br><br>
Jul 16. PubMed PMID: 18643987.<br><br>
<br><br>
<br>
*******************************************************<br><br>
Alicia Zelada PhD<br><br>
Investigator CONICET- Assistant Professor UBA<br><br>
Lab of Agrobiotechnology<br>
FCEN-UBA<br><br>
Int Güiraldes 2620<br>
Ciudad Universitaria, Pab II. 2to piso<br>
Facultad de Ciencias Exactas y Naturales<br>
Universidad de Buenos Aires<br>
1428 Buenos Aires, Argentina<br>
Tel. (54 11) 4576-3300 ext. 425<br><br>
<a href="mailto:azelada.uba@gmail.com">azelada.uba@gmail.com</a><br><br>
<br><br>
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