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- W1988214444 abstract "Most plant cells contain a large central vacuole that is essential to maintain cellular turgor. We report a new mutant allele of VTI11 that implicates the SNARE protein VTI11 in homotypic fusion of protein storage and lytic vacuoles. Fusion of the multiple vacuoles present in vti11 mutants could be induced by treatment with Wortmannin and LY294002, which are inhibitors of Phosphatidylinositol 3-Kinase (PI3K). We provide evidence that Phosphatidylinositol 3-Phosphate (PtdIns(3)P) regulates vacuole fusion in vti11 mutants, and that fusion of these vacuoles requires intact microtubules and actin filaments. Finally, we show that Wortmannin also induced the fusion of guard cell vacuoles in fava beans, where vacuoles are naturally fragmented after ABA-induced stomata closure. These results suggest a ubiquitous role of phosphoinositides in vacuole fusion, both during the development of the large central vacuole and during the dynamic vacuole remodeling that occurs as part of stomata movements." @default.
- W1988214444 created "2016-06-24" @default.
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- W1988214444 creator A5037929039 @default.
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- W1988214444 creator A5087103284 @default.
- W1988214444 date "2014-06-01" @default.
- W1988214444 modified "2023-09-29" @default.
- W1988214444 title "Homotypic Vacuole Fusion Requires VTI11 and Is Regulated by Phosphoinositides" @default.
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- W1988214444 doi "https://doi.org/10.1093/mp/ssu019" @default.
- W1988214444 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/24569132" @default.
- W1988214444 hasPublicationYear "2014" @default.