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Alain Vavasseur
Researcher at French Alternative Energies and Atomic Energy Commission
Publications - 73
Citations - 8749
Alain Vavasseur is an academic researcher from French Alternative Energies and Atomic Energy Commission. The author has contributed to research in topics: Guard cell & Abscisic acid. The author has an hindex of 35, co-authored 73 publications receiving 7876 citations. Previous affiliations of Alain Vavasseur include Centre national de la recherche scientifique & University of the Mediterranean.
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Arabidopsis OST1 Protein Kinase Mediates the Regulation of Stomatal Aperture by Abscisic Acid and Acts Upstream of Reactive Oxygen Species Production
TL;DR: Results suggest that OST1 acts in the interval between ABA perception and ROS production, and the relative positions of ost1 and the other ABA-insensitive mutations in the ABA signaling network (abi1-1, abi2-1 and gca2) are discussed.
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Heavy metal toxicity: cadmium permeates through calcium channels and disturbs the plant water status.
TL;DR: It is proposed that Cd2+ affects guard cell regulation in an ABA-independent manner by entering the cytosol via Ca2+ channels.
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The ABI1 and ABI2 protein phosphatases 2C act in a negative feedback regulatory loop of the abscisic acid signalling pathway.
TL;DR: The isolation and characterisation of the first reduction-of-function allele of ABI2, abi2--1R1, indicate that the wild-type ABI 2 phosphatase is a negative regulator of ABA signalling, and that the ABI1 and A BI2 phosphatases have overlapping roles in controlling ABA action.
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AtHMA3, a P1B-ATPase allowing Cd/Zn/Co/Pb vacuolar storage in Arabidopsis.
Mélanie Morel,Jérôme Crouzet,Antoine Gravot,Pascaline Auroy,Nathalie Leonhardt,Alain Vavasseur,Pierre Richaud +6 more
TL;DR: It is demonstrated that AtHMA3 in planta is located in the vacuolar membrane, with a high expression level in guard cells, hydathodes, vascular tissues, and the root apex, and it likely plays a role in the detoxification of biological (Zn) and nonbiological (Cd, cobalt, and Pb) heavy metals by participating in their vacu polar sequestration.
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Overexpression of AtHMA4 enhances root-to-shoot translocation of zinc and cadmium and plant metal tolerance.
Frédéric Verret,Antoine Gravot,Pascaline Auroy,Nathalie Leonhardt,Pascale David,Laurent Nussaume,Alain Vavasseur,Pierre Richaud +7 more
TL;DR: It is demonstrated that AtHMA4 is localized at the plasma membrane and expressed in tissues surrounding the root vascular vessels and plays a role in metal loading in the xylem.