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- W2911454613 abstract "Summary Root hairs, as lateral extensions of epidermal cells, provide large absorptive surfaces to the root and are major actors in plant hydromineral nutrition. In contact with the soil they also constitute a site of interactions between the plant and rhizospheric microorganisms. In legumes, initiation of symbiotic interactions with N 2 ‐fixing rhizobia is often triggered at the root hair cell membrane in response to nodulation factors secreted by rhizobia, and involves early signaling events with changes in H + , Ca 2+ , K + and Cl − fluxes inducing transient depolarization of the cell membrane. Here, we aimed to build a functional repertoire of the major root hair conductances to cations and anions in the sequenced legume model Medicago truncatula . Five root hair conductances were characterized through patch‐clamp experiments on enzymatically recovered root hair protoplasts. These conductances displayed varying properties of voltage dependence, kinetics and ion selectivity. They consisted of hyperpolarization‐ and depolarization‐activated conductances for K + , cations or Cl − . Among these, one weakly outwardly rectifying cationic conductance and one hyperpolarization‐activated slowly inactivating anionic conductance were not known as active in root hairs. All five conductances were detected in apical regions of young growing root hairs using membrane spheroplasts obtained by laser‐assisted cell‐wall microdissection. Combined with recent root hair transcriptomes of M. truncatula , this functional repertoire of conductances is expected to help the identification of candidate genes for reverse genetics studies to investigate the possible role of each conductance in root hair growth and interaction with the biotic and abiotic environment." @default.
- W2911454613 created "2019-02-21" @default.
- W2911454613 creator A5010845241 @default.
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- W2911454613 creator A5044584641 @default.
- W2911454613 creator A5048715255 @default.
- W2911454613 creator A5073792373 @default.
- W2911454613 date "2019-03-12" @default.
- W2911454613 modified "2023-10-18" @default.
- W2911454613 title "A repertoire of cationic and anionic conductances at the plasma membrane of <i>Medicago truncatula</i> root hairs" @default.
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- W2911454613 doi "https://doi.org/10.1111/tpj.14238" @default.
- W2911454613 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30673148" @default.
- W2911454613 hasPublicationYear "2019" @default.
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