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Arabidopsis Hypocotyl Adventitious Root Formation Is Suppressed by ABA Signaling.
Zeng, Yinwei; Verstraeten, Inge; Trinh, Hoang Khai; Heugebaert, Thomas; Stevens, Christian V; Garcia-Maquilon, Irene; Rodriguez, Pedro L; Vanneste, Steffen; Geelen, Danny.
Afiliación
  • Zeng Y; Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium.
  • Verstraeten I; Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium.
  • Trinh HK; Institute of Science and Technology (IST) Austria, Am Campus 1, 3400 Klosterneuburg, Austria.
  • Heugebaert T; Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium.
  • Stevens CV; Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium.
  • Garcia-Maquilon I; Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium.
  • Rodriguez PL; Instituto de Biologia Molecular y Celular de Plantas, Consejo Superior de Investigaciones Cientificas, Universidad Politecnica de Valencia, Avd de los Naranjos, 46022 Valencia, Spain.
  • Vanneste S; Instituto de Biologia Molecular y Celular de Plantas, Consejo Superior de Investigaciones Cientificas, Universidad Politecnica de Valencia, Avd de los Naranjos, 46022 Valencia, Spain.
  • Geelen D; Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium.
Genes (Basel) ; 12(8)2021 07 27.
Article en En | MEDLINE | ID: mdl-34440314
Roots are composed of different root types and, in the dicotyledonous Arabidopsis, typically consist of a primary root that branches into lateral roots. Adventitious roots emerge from non-root tissue and are formed upon wounding or other types of abiotic stress. Here, we investigated adventitious root (AR) formation in Arabidopsis hypocotyls under conditions of altered abscisic acid (ABA) signaling. Exogenously applied ABA suppressed AR formation at 0.25 µM or higher doses. AR formation was less sensitive to the synthetic ABA analog pyrabactin (PB). However, PB was a more potent inhibitor at concentrations above 1 µM, suggesting that it was more selective in triggering a root inhibition response. Analysis of a series of phosphonamide and phosphonate pyrabactin analogs suggested that adventitious root formation and lateral root branching are differentially regulated by ABA signaling. ABA biosynthesis and signaling mutants affirmed a general inhibitory role of ABA and point to PYL1 and PYL2 as candidate ABA receptors that regulate AR inhibition.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Transducción de Señal / Arabidopsis / Ácido Abscísico / Raíces de Plantas Idioma: En Revista: Genes (Basel) Año: 2021 Tipo del documento: Article País de afiliación: Bélgica Pais de publicación: Suiza
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Transducción de Señal / Arabidopsis / Ácido Abscísico / Raíces de Plantas Idioma: En Revista: Genes (Basel) Año: 2021 Tipo del documento: Article País de afiliación: Bélgica Pais de publicación: Suiza