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https://hdl.handle.net/2440/62690
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dc.contributor.author | Michard, E. | - |
dc.contributor.author | Lima, P. | - |
dc.contributor.author | Borges, F. | - |
dc.contributor.author | Silva, A. | - |
dc.contributor.author | Portes, M. | - |
dc.contributor.author | Carvalho, J. | - |
dc.contributor.author | Gilliham, M. | - |
dc.contributor.author | Liu, L. | - |
dc.contributor.author | Obermeyer, G. | - |
dc.contributor.author | Feijo, J. | - |
dc.date.issued | 2011 | - |
dc.identifier.citation | Science, 2011; 332(6028):434-437 | - |
dc.identifier.issn | 0036-8075 | - |
dc.identifier.issn | 1095-9203 | - |
dc.identifier.uri | http://hdl.handle.net/2440/62690 | - |
dc.description.abstract | Elevations in cytosolic free calcium concentration ([Ca2+]cyt) constitute a fundamental signal transduction mechanism in eukaryotic cells, but the molecular identity of Ca2+ channels initiating this signal in plants is still under debate. Here, we show by pharmacology and loss-of-function mutants that in tobacco and Arabidopsis, glutamate receptor–like genes (GLRs) facilitate Ca2+ influx across the plasma membrane, modulate apical [Ca2+]cyt gradient and consequently pollen tube growth and morphogenesis. Additionally, wild-type pollen tubes grown in pistils of knock-out mutants for serine-racemase (SR1) displayed growth defects consistent with a decrease in GLR activity. Our findings reveal a novel plant signaling mechanism between male gametophyte and pistil tissue analogous to amino acid–mediated communication commonly observed in animal nervous systems. | - |
dc.description.statementofresponsibility | Erwan Michard, Pedro T. Lima, Filipe Borges, Ana Catarina Silva, Maria Teresa Portes, João E. Carvalho, Matthew Gilliham, Lai-Hua Liu, Gerhard Obermeyer and José A Feijó | - |
dc.language.iso | en | - |
dc.publisher | Amer Assoc Advancement Science | - |
dc.rights | © 2011 American Association for the Advancement of Science. All Rights Reserved. | - |
dc.source.uri | http://www.sciencemag.org/content/332/6028/434 | - |
dc.subject | Cell Membrane | - |
dc.subject | Cytosol | - |
dc.subject | Plants, Genetically Modified | - |
dc.subject | Arabidopsis | - |
dc.subject | Tobacco | - |
dc.subject | Flowers | - |
dc.subject | Calcium | - |
dc.subject | 6-Cyano-7-nitroquinoxaline-2,3-dione | - |
dc.subject | Racemases and Epimerases | - |
dc.subject | Serine | - |
dc.subject | Glycine | - |
dc.subject | Calcium Channels | - |
dc.subject | Receptors, Glutamate | - |
dc.subject | Excitatory Amino Acid Agonists | - |
dc.subject | Excitatory Amino Acid Antagonists | - |
dc.subject | Patch-Clamp Techniques | - |
dc.subject | Calcium Signaling | - |
dc.subject | Gene Expression Regulation, Plant | - |
dc.subject | Morphogenesis | - |
dc.subject | Genes, Plant | - |
dc.subject | Pollen Tube | - |
dc.title | Glutamate receptor-like genes form Ca²⁺ channels in pollen tubes and are regulated by pistil D-serine | - |
dc.title.alternative | Glutamate receptor-like genes form Ca2+ channels in pollen tubes and are regulated by pistil D-serine | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1126/science.1201101 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Gilliham, M. [0000-0003-0666-3078] | - |
Appears in Collections: | Agriculture, Food and Wine publications Aurora harvest 5 |
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