151164 20251017144609.0 doi 10.3390/horticulturae7090299 sideral 125808 ART-2021-125808 eng Bielsa B. ‘Garnem’ and Myrobalan ‘P.2175’: Two Different Drought Responses and Their Implications in Drought Tolerance 2021 Access copy available to the general public Unrestricted One of the challenges in rootstock breeding programs is the combination of tolerances to different abiotic stresses in new interspecific hybrids adapted to a wide range of environmental conditions. In this work, two Prunus L. rootstocks: Myrobalan ‘P.2175’ (P. cerasifera Ehrh.) and the almond × peach hybrid ‘Garnem’ (P. amygdalus Batsch × P. persica (L.) Batsch) were subjected to drought during 24 h to understand their drought response mechanisms. The study was conducted monitoring leaf water potential (LWP), stomatal conductance (gs), relative water content (RWC), and electrolyte leakage (EL); as well as the abscisic acid (ABA) content in roots. The relative expression of five drought-relative genes was also studied. The obtained results allowed examining the drought tolerance potential of ‘Garnem’ and Myrobalan ‘P.2175’, demonstrating the great potential of ‘Garnem’ as drought tolerance source in future selections in breeding. Furthermore, based on the obtained data, the transcription factor Myb25-like could be a good biomarker of drought sensitivity for use in Prunus rootstock breeding programs. © 2021 by the authors. Licensee MDPI, Basel, Switzerland. info:eu-repo/grantAgreement/ES/AEI/RTI2018-094210-R100 info:eu-repo/grantAgreement/ES/DGA/A12 info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es 2.923 2021 HORTICULTURE 7 / 36 = 0.194 2021 Q1 T1 0.468 2021 Plant Science 2021 Q1 Horticulture 2021 Q1 1.8 2021 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Sanz M.Á. Rubio-Cabetas M.J. (orcid)0000-0002-3455-0145 7, 9 (2021), 7090299 [13 pp.] Horticulturae Horticulturae 2311-7524 2091251 http://zaguan.unizar.es/record/151164/files/texto_completo.pdf Versión publicada 2795162 http://zaguan.unizar.es/record/151164/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:151164 articulos driver 2025-10-17-14:16:30 ARTICLE