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SLAH3-type anion channel expressed in poplar secretory epithelia operates in calcium kinase CPK-autonomous manner

SLAH3-type anion channel expressed in poplar secretory epithelia operates in calcium kinase CPK-autonomous manner

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JABORSKY, Mario, Tobias MAIERHOFER, Andrea OLBRICH, María ESCALANTE-PÉREZ, Heike M. MÜLLER, Judy SIMON, Elzbieta KROL, Tracey Ann CUIN, Jörg FROMM, Rainer HEDRICH, 2016. SLAH3-type anion channel expressed in poplar secretory epithelia operates in calcium kinase CPK-autonomous manner. In: New Phytologist. 210(3), pp. 922-933. ISSN 0028-646X. eISSN 1469-8137

@article{Jaborsky2016SLAH3-34037, title={SLAH3-type anion channel expressed in poplar secretory epithelia operates in calcium kinase CPK-autonomous manner}, year={2016}, doi={10.1111/nph.13841}, number={3}, volume={210}, issn={0028-646X}, journal={New Phytologist}, pages={922--933}, author={Jaborsky, Mario and Maierhofer, Tobias and Olbrich, Andrea and Escalante-Pérez, María and Müller, Heike M. and Simon, Judy and Krol, Elzbieta and Cuin, Tracey Ann and Fromm, Jörg and Hedrich, Rainer} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/34037"> <dc:creator>Müller, Heike M.</dc:creator> <dc:creator>Olbrich, Andrea</dc:creator> <dc:contributor>Jaborsky, Mario</dc:contributor> <dc:contributor>Fromm, Jörg</dc:contributor> <dc:contributor>Escalante-Pérez, María</dc:contributor> <dc:contributor>Olbrich, Andrea</dc:contributor> <dc:contributor>Cuin, Tracey Ann</dc:contributor> <dc:contributor>Simon, Judy</dc:contributor> <dc:contributor>Maierhofer, Tobias</dc:contributor> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/34037"/> <dc:creator>Cuin, Tracey Ann</dc:creator> <dc:contributor>Müller, Heike M.</dc:contributor> <dc:creator>Escalante-Pérez, María</dc:creator> <dcterms:title>SLAH3-type anion channel expressed in poplar secretory epithelia operates in calcium kinase CPK-autonomous manner</dcterms:title> <dc:creator>Fromm, Jörg</dc:creator> <dc:creator>Krol, Elzbieta</dc:creator> <dcterms:abstract xml:lang="eng">Extrafloral nectaries secrete a sweet sugar cocktail that lures predator insects for protection from foraging herbivores. Apart from sugars and amino acids, the nectar contains the anions chloride and nitrate. Recent studies with Populus have identified a type of nectary covered by apical bipolar epidermal cells, reminiscent of the secretory brush border epithelium in animals. Border epithelia operate transepithelial anion transport, which is required for membrane potential and/or osmotic adjustment of the secretory cells. In search of anion transporters expressed in extrafloral nectaries, we identified PttSLAH3 (Populus tremula × Populus tremuloides SLAC1 Homologue3), an anion channel of the SLAC/SLAH family. When expressed in Xenopus oocytes, PttSLAH3 displayed the features of a voltage-dependent anion channel, permeable to both nitrate and chloride. In contrast to the Arabidopsis SLAC/SLAH family members, the poplar isoform PttSLAH3 is independent of phosphorylation activation by protein kinases. To understand the basis for the autonomous activity of the poplar SLAH3, we generated and expressed chimera between kinase-independent PttSLAH3 and kinase-dependent Arabidopsis AtSLAH3. We identified the N-terminal tail and, to a lesser extent, the C-terminal tail as responsible for PttSLAH3 kinase-(in)dependent action. This feature of PttSLAH3 may provide the secretory cell with a channel probably controlling long-term nectar secretion.</dcterms:abstract> <dc:contributor>Hedrich, Rainer</dc:contributor> <dcterms:issued>2016</dcterms:issued> <dc:creator>Hedrich, Rainer</dc:creator> <dc:contributor>Krol, Elzbieta</dc:contributor> <dc:creator>Jaborsky, Mario</dc:creator> <dc:creator>Maierhofer, Tobias</dc:creator> <dc:language>eng</dc:language> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2016-05-20T09:42:41Z</dc:date> <dc:creator>Simon, Judy</dc:creator> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2016-05-20T09:42:41Z</dcterms:available> </rdf:Description> </rdf:RDF>

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