Abstract
Studies of membrane electrical responses of isolated protoplasts to auxin have demonstrated the existence of elementary response chains to auxin at the plasma membrane, presently defined only by their uttermost ends. At one side, as demonstrated by several lines of evidence, the auxin perception unit involves proteins homologous to ZmER-abp 1 (abp 1), the most abundant auxin-binding protein from maize coleoptiles. At the other side, multiple ion transport proteins appear as targets of the auxin signal; the proton pump ATPase, an anion channel and potassium channels. We investigated early electrical responses to auxin at the plasma membrane of tobacco protoplasts. The work presented here will initially focus on abpl and its functional role at the membrane. The C-terminus abpl peptide (Pz151–163) was recently reported to modulate K+ currents at the plasma membrane of intact guard cells from broad bean [23] and induce plasma membrane hyperpolarisation of tobacco mesophyll protoplasts. These results further demonstrate that proteins involved in plasma membrane responses to auxin are related to maize abp1, and provide clues as to the region of the protein possibly involved in the interaction of abpl with the plasma membrane. Secondly, this report concentrates on one of the targets of auxin, a voltage-dependent and ATP-regulated anion channel that we characterised on protoplasts from tobacco cell suspensions. This anion channel was specifically modulated by auxin, as already observed for the anion channel of guard cells [14]. Further work will be needed to assess if this auxin modulation involves a direct interaction between the hormone and the anion channel protein(s), or follows from the activation of a perception chain including abp1 homologues.
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References
Barbier-Brygoo H (1995) Tracking auxin receptors using functional approaches. Crit Rev Plant Sci 14: 1–25
Barbier-Brygoo H, Ephritkhine G, Klämbt D, Ghislain M and Guern J (1989) Functional evidence for an auxin receptor at the plasmalemma of tobacco mesophyll protoplasts. Proc Natl Acad Sci USA 86: 891–895
Barbier-Brygoo H, Ephritkhine G, Klämbt D, Maurel C, Palme K, Schell J and Guem J (1991) Perception of the auxin signal at the plasma membrane of tobacco mesophyll protoplasts. Plant J 1:83–93
Blatt MR and Thiel G (1993) Hormonal control of ion channel gating. Ann Rev Plant Physiol Plant Mol Biol 44: 543–567
Blatt MR and Thiel G (1994) K+ channels of stomatal guard cells: bimodal control of the inward-rectifier evoked by auxin. Plant J 5: 55–68
Ephritkhine G, Barbier-Brygoo H, Müller J-F and Guern J (1987) Auxin effects on the transmembrane potential difference of wild type and mutant tobacco protoplasts exhibiting differential sensitivity to auxin. Plant Physiol 83: 801–804
Felle H, Peters W, and Palme K (1991) The electrical response of maize to auxins. Biochim Biophys Acta 1064: 199–204
Goldsmith MHM (1993) Cellular signalling: New insights into the action of the plant growth hormone auxin. Proc Natl Acad Sci USA 90: 1442–1445
Groarke A, Webster J, White IR and Millner PA (1993) Identification of a membrane receptor for the auxin binding protein. Biochm Soc Trans 21: 227S
Hedrich R, Busch H and Raschke K (1990) Ca2+ and nucleotide dependent regulation of voltage dependent anion channels in the plasma membrane of guard cells. EMBO J 9: 3889–3892
Jones AM (1994) Auxin-binding proteins. Ann Rev Plant Physiol Plant Mol Biol 45: 393–420
Linder B and Raschke K (1992) A slow anion channel in guard cells, activating at large hyperpolarisation, may be principal for stomatal closing. FEBS Lett 313: 27–30
Lohse G and Hedrich R (1992) Characterisation of the plasma membrane H+ -ATPase from Vicia faba cells. Modulation by extracellular factors and seasonal changes. Planta 188: 206–214
Marten I, Lohse G and Hedrich R (1991) Plant growth hormones control voltage-dependent activity of anion channels in plasma membrane of guard cells. Nature 353: 758–762
Marten I, Busch H, Raschke K and Hedrich R (1993) Modulation and block of the plasma membrane anion channel of guard cells by stilbene derivatives. Eur Biophys J 21: 403–408
Marten I, Zeilinger C, Redhead C, Landry DW, Al-Awqati Q and Hedrich R (1992) Identification and modulation of a voltage-dependent anion channel in the plasma membrane of guard cells by high-affinity ligands. EMBO J 11: 3569–3575
Rück A, Palme K, Venis MA, Napier RM and Felle H (1993) Patch-clamp analysis establishes a role for an auxin binding proteins in the auxin stimulation of plasma membrane current in Zea mays protoplasts. Plant J 4: 41–46
Santoni V, Vansuyt G and Rossignol M (1990) Differential auxin sensitivity of proton translocation by plasma membrane H+ -ATPase from tobacco leaves. Plant Sci 54: 177–184
Santoni V, Vansuyt G and Rossignol M (1991) The changing sensitivity to auxin of the plasma-membrane H+ -ATPase: Relationship between plant development and ATPase content of membranes. Planta 185:227–232
Schroeder JI and Keller B (1992) Two types of anion channel currents in guard cells with distinct voltage regulation. Proc Natl Acad Sci USA 89: 5025–5029
Schroeder JI, Schmidt C and Sheaffer J (1993) Identification of high-affinity slow anion channel blockers and evidence for stomatal regulation by slow anion channels in guard cells. Plant Cell 5: 1831–1841
Senn AP and Goldsmith MHM (1988) Regulation of electro-genie proton pumping by auxin and fusiccocin to the growth of Avena coleoptiles. Plant Physiol 88: 131–138
Thiel G, Blatt MR, Fricker MD, White IR and Millner P (1993) Modulation of K+ channels in Vicia stomatal guard cells by peptides homologs to the auxin-binding protein C-terminus. Proc Natl Acad Sci USA 90: 11493–11497
Venis MA and Napier RM (1995) Auxin receptors and auxin-binding proteins. Crit Rev Plant Sci 14: 27–47
Venis MA, Napier RM, Barbier-Brygoo H, Maurel C, Perrot-Rechenmann C and Guem J (1992) Antibodies to a peptide from maize auxin-binding proteins have auxin agonist activity. Proc Natl Acad Sci USA 89: 7208–7212
Zimmermann S, Thomine S, Guern J and Barbier-Brygoo H (1994) An anion current at the plasma membrane of tobacco protoplasts shows ATP-dependent voltage regulation and is modulated by auxin. Plant J 6: 707–716
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© 1996 Kluwer Academic Publishers
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Barbier-Brygoo, H., Zimmermann, S., Thomine, S., White, I.R., Millner, P., Guern, J. (1996). Elementary auxin response chains at the plasma membrane involve external abp1 and multiple electrogenic ion transport proteins. In: Smith, A.R., et al. Plant Hormone Signal Perception and Transduction. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0131-5_5
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DOI: https://doi.org/10.1007/978-94-009-0131-5_5
Publisher Name: Springer, Dordrecht
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