Journal
PLANT CELL
Volume 26, Issue 7, Pages 3132-3147Publisher
AMER SOC PLANT BIOLOGISTS
DOI: 10.1105/tpc.114.127159
Keywords
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Funding
- Belgian National Fund for Scientific Research (FNRS)
- Interuniversity Attraction Poles Programme-Belgian Science Policy [IAP7/29]
- Communaute francaise de Belgique-Actions de Recherches Concertees
- Francqui Foundation
- Bauchau Award
- Francqui-Inter-Community
- BBSRC [BB/F001630/1, BB/H009817/1, BB/M01133X/1, BB/K015893/1, BB/H024867/1] Funding Source: UKRI
- Biotechnology and Biological Sciences Research Council [BB/H009817/1, P12750, BB/M01133X/1, BB/K015893/1, BB/H024867/1, BB/F001630/1] Funding Source: researchfish
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Plant plasma membrane intrinsic proteins (PIPs) are aquaporins that facilitate the passive movement of water and small neutral solutes through biological membranes. Here, we report that post-Golgi trafficking of PIP2;7 in Arabidopsis thaliana involves specific interactions with two syntaxin proteins, namely, the Qc-SNARE SYP61 and the Qa-SNARE SYP121, that the proper delivery of PIP2;7 to the plasma membrane depends on the activity of the two SNAREs, and that the SNAREs colocalize and physically interact. These findings are indicative of an important role for SYP61 and SYP121, possibly forming a SNARE complex. Our data support a model in which direct interactions between specific SNARE proteins and PIP aquaporins modulate their post-Golgi trafficking and thus contribute to the fine-tuning of the water permeability of the plasma membrane.
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