The BIG protein distinguishes the process of CO 2 ‐induced stomatal closure from the inhibition of stomatal opening by CO 2
| العنوان: | The |
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| المؤلفون: | Yun-Kuan Liang, Jingbo Zhang, Alistair M. Hetherington, Jörg Kudla, Katrin Held, Jingjing He, Katharine E. Hubbard, Ruo Xi Zhang, Julie E. Gray, Cecilia Tagliavia, Shaowu Xue, Amy Liu, Honghong Hu, Martin R. McAinsh, Julian I. Schroeder, Siwen Li, Kai Peng |
| المصدر: | New Phytologist. 218:232-241 |
| بيانات النشر: | Wiley, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | 0106 biological sciences, 0301 basic medicine, biology, Physiology, Chemistry, Bicarbonate, Mutant, Plant Science, biology.organism_classification, 01 natural sciences, 03 medical and health sciences, chemistry.chemical_compound, 030104 developmental biology, Molecular level, Arabidopsis, Biophysics, Signal transduction, Abscisic acid, Ion channel, 010606 plant biology & botany, Stomatal density |
| الوصف: | We conducted an infrared thermal imaging-based genetic screen to identify Arabidopsis mutants displaying aberrant stomatal behavior in response to elevated concentrations of CO2 . This approach resulted in the isolation of a novel allele of the Arabidopsis BIG locus (At3g02260) that we have called CO2 insensitive 1 (cis1). BIG mutants are compromised in elevated CO2 -induced stomatal closure and bicarbonate activation of S-type anion channel currents. In contrast with the wild-type, they fail to exhibit reductions in stomatal density and index when grown in elevated CO2 . However, like the wild-type, BIG mutants display inhibition of stomatal opening when exposed to elevated CO2 . BIG mutants also display wild-type stomatal aperture responses to the closure-inducing stimulus abscisic acid (ABA). Our results indicate that BIG is a signaling component involved in the elevated CO2 -mediated control of stomatal development. In the control of stomatal aperture by CO2 , BIG is only required in elevated CO2 -induced closure and not in the inhibition of stomatal opening by this environmental signal. These data show that, at the molecular level, the CO2 -mediated inhibition of opening and promotion of stomatal closure signaling pathways are separable and BIG represents a distinguishing element in these two CO2 -mediated responses. |
| تدمد: | 1469-8137 0028-646X |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::3540b380cdbceb4c85f6dc9f294c1218Test https://doi.org/10.1111/nph.14957Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi...........3540b380cdbceb4c85f6dc9f294c1218 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14698137 0028646X |
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