Species-dependent changes in stomatal sensitivity to abscisic acid mediated by external pH
Апстракт
The direct effects of pH changes and/or abscisic acid (ABA) on stomatal aperture were examined in epidermal strips of Commelina communis L. and Arabidopsis thaliana. Stomata were initially opened at pH 7 or pH 5. The stomatal closure induced by changes in external pH and/or ABA (10 mu M or 10 nM) was monitored using video microscopy and quantified in terms of changes in stomatal area using image analysis software. Measurements of aperture area enabled stomatal responses and, in particular, small changes in stomatal area to be quantified reliably. Both plant species exhibited a biphasic closure response to ABA: an initial phase of rapid stomatal closure, followed by a second, more prolonged, phase during which stomata closure proceeded at a slower rate. Changes in stomatal sensitivity to ABA were also observed. Comparison of these effects between C. communis and A. thaliana demonstrate that this differential sensitivity of stomata to ABA is species-dependent, as well as being dependent ...on the pH of the extracellular environment.
Кључне речи:
ABA / aperture area / Arabidopsis thaliana / Commelina communis / pH / stomatal closureИзвор:
Journal of Experimental Botany, 2006, 57, 3, 675-683Издавач:
- Oxford Univ Press, Oxford
DOI: 10.1093/jxb/erj057
ISSN: 0022-0957
PubMed: 16396996
WoS: 000234966400023
Scopus: 2-s2.0-33645242867
Институција/група
Poljoprivredni fakultetTY - JOUR AU - Prokić, Ljiljana AU - Jovanović, Zorica AU - McAinsh, MR AU - Vucinić, Z AU - Stikić, Radmila PY - 2006 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/1332 AB - The direct effects of pH changes and/or abscisic acid (ABA) on stomatal aperture were examined in epidermal strips of Commelina communis L. and Arabidopsis thaliana. Stomata were initially opened at pH 7 or pH 5. The stomatal closure induced by changes in external pH and/or ABA (10 mu M or 10 nM) was monitored using video microscopy and quantified in terms of changes in stomatal area using image analysis software. Measurements of aperture area enabled stomatal responses and, in particular, small changes in stomatal area to be quantified reliably. Both plant species exhibited a biphasic closure response to ABA: an initial phase of rapid stomatal closure, followed by a second, more prolonged, phase during which stomata closure proceeded at a slower rate. Changes in stomatal sensitivity to ABA were also observed. Comparison of these effects between C. communis and A. thaliana demonstrate that this differential sensitivity of stomata to ABA is species-dependent, as well as being dependent on the pH of the extracellular environment. PB - Oxford Univ Press, Oxford T2 - Journal of Experimental Botany T1 - Species-dependent changes in stomatal sensitivity to abscisic acid mediated by external pH EP - 683 IS - 3 SP - 675 VL - 57 DO - 10.1093/jxb/erj057 ER -
@article{ author = "Prokić, Ljiljana and Jovanović, Zorica and McAinsh, MR and Vucinić, Z and Stikić, Radmila", year = "2006", abstract = "The direct effects of pH changes and/or abscisic acid (ABA) on stomatal aperture were examined in epidermal strips of Commelina communis L. and Arabidopsis thaliana. Stomata were initially opened at pH 7 or pH 5. The stomatal closure induced by changes in external pH and/or ABA (10 mu M or 10 nM) was monitored using video microscopy and quantified in terms of changes in stomatal area using image analysis software. Measurements of aperture area enabled stomatal responses and, in particular, small changes in stomatal area to be quantified reliably. Both plant species exhibited a biphasic closure response to ABA: an initial phase of rapid stomatal closure, followed by a second, more prolonged, phase during which stomata closure proceeded at a slower rate. Changes in stomatal sensitivity to ABA were also observed. Comparison of these effects between C. communis and A. thaliana demonstrate that this differential sensitivity of stomata to ABA is species-dependent, as well as being dependent on the pH of the extracellular environment.", publisher = "Oxford Univ Press, Oxford", journal = "Journal of Experimental Botany", title = "Species-dependent changes in stomatal sensitivity to abscisic acid mediated by external pH", pages = "683-675", number = "3", volume = "57", doi = "10.1093/jxb/erj057" }
Prokić, L., Jovanović, Z., McAinsh, M., Vucinić, Z.,& Stikić, R.. (2006). Species-dependent changes in stomatal sensitivity to abscisic acid mediated by external pH. in Journal of Experimental Botany Oxford Univ Press, Oxford., 57(3), 675-683. https://doi.org/10.1093/jxb/erj057
Prokić L, Jovanović Z, McAinsh M, Vucinić Z, Stikić R. Species-dependent changes in stomatal sensitivity to abscisic acid mediated by external pH. in Journal of Experimental Botany. 2006;57(3):675-683. doi:10.1093/jxb/erj057 .
Prokić, Ljiljana, Jovanović, Zorica, McAinsh, MR, Vucinić, Z, Stikić, Radmila, "Species-dependent changes in stomatal sensitivity to abscisic acid mediated by external pH" in Journal of Experimental Botany, 57, no. 3 (2006):675-683, https://doi.org/10.1093/jxb/erj057 . .