Comparative analysis of salt tolerance in five commercial Prunus rootstocks

Background Salinity threatens agricultural productivity worldwide, particularly affecting fruit trees like Prunus species. Rootstocks can enhance salt tolerance, but comparative evaluations of modern commercial rootstocks under saline conditions remain limited. This study assessed salt tolerance mec...

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Autores: Rius-García, Xavier, Videgain-Marco, María, Casanova-Gascón, José, Acuña-Rello, Luis, Martín-Ramos, Pablo
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2025
País:España
Institución:Universidad de Zaragoza
Repositorio:Zaguán. Repositorio Digital de la Universidad de Zaragoza
OAI Identifier:oai:zaguan.unizar.es:164092
Acceso en línea:http://zaguan.unizar.es/record/164092
Access Level:acceso embargado
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spelling Comparative analysis of salt tolerance in five commercial Prunus rootstocksRius-García, XavierVidegain-Marco, MaríaCasanova-Gascón, JoséAcuña-Rello, LuisMartín-Ramos, PabloBackground Salinity threatens agricultural productivity worldwide, particularly affecting fruit trees like Prunus species. Rootstocks can enhance salt tolerance, but comparative evaluations of modern commercial rootstocks under saline conditions remain limited. This study assessed salt tolerance mechanisms in five Prunus rootstocks (Garnem, GF677, Rootpac 20, Rootpac 40 and Rootpac R) under increasing NaCl concentrations. Results Significant genotypic variation in salt tolerance was observed, with distinct parameter-specific responses challenging simple tolerance rankings. Rootpac R demonstrated balanced performance across growth, physiological and ion homeostasis parameters. Rootpac 20 maintained the best shoot elongation (only 9.9% reduction at 75 mmol L−1 NaCl) despite severe ion dysregulation and near-complete defoliation, revealing independent tolerance mechanisms. GF677 performed well at moderate salinity but showed threshold effects at higher concentrations. Rootpac 40 maintained superior K+/Na+ ratios that did not translate to growth performance, while Garnem showed poor performance in both growth metrics despite large initial size. Initial vigor rankings (based on control performance) showed no correlation with salt tolerance, indicating that these traits are genetically independent. Conclusion Salt tolerance in Prunus rootstocks involves multiple, independent mechanisms including growth maintenance, ion selectivity and physiological stability. No single genotype exhibited universal superiority; instead, each employed distinct tolerance strategies with specific advantages. Rootpac R offers the most balanced performance for general saline conditions, while other genotypes may be preferred for specific situations: Rootpac 20 for short-term growth maintenance, Rootpac 40 for ion homeostasis priority or Garnem for mild stress conditions. These findings emphasize that rootstock selection must consider specific environmental conditions and production goals rather than relying on simple tolerance rankings. © 2025 Society of Chemical Industry.2025info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://zaguan.unizar.es/record/164092reponame:Zaguán. Repositorio Digital de la Universidad de Zaragozainstname:Universidad de ZaragozaInglésinfo:eu-repo/semantics/embargoedAccessoai:zaguan.unizar.es:1640922026-05-29T13:59:51Z
dc.title.none.fl_str_mv Comparative analysis of salt tolerance in five commercial Prunus rootstocks
title Comparative analysis of salt tolerance in five commercial Prunus rootstocks
spellingShingle Comparative analysis of salt tolerance in five commercial Prunus rootstocks
Rius-García, Xavier
title_short Comparative analysis of salt tolerance in five commercial Prunus rootstocks
title_full Comparative analysis of salt tolerance in five commercial Prunus rootstocks
title_fullStr Comparative analysis of salt tolerance in five commercial Prunus rootstocks
title_full_unstemmed Comparative analysis of salt tolerance in five commercial Prunus rootstocks
title_sort Comparative analysis of salt tolerance in five commercial Prunus rootstocks
dc.creator.none.fl_str_mv Rius-García, Xavier
Videgain-Marco, María
Casanova-Gascón, José
Acuña-Rello, Luis
Martín-Ramos, Pablo
author Rius-García, Xavier
author_facet Rius-García, Xavier
Videgain-Marco, María
Casanova-Gascón, José
Acuña-Rello, Luis
Martín-Ramos, Pablo
author_role author
author2 Videgain-Marco, María
Casanova-Gascón, José
Acuña-Rello, Luis
Martín-Ramos, Pablo
author2_role author
author
author
author
description Background Salinity threatens agricultural productivity worldwide, particularly affecting fruit trees like Prunus species. Rootstocks can enhance salt tolerance, but comparative evaluations of modern commercial rootstocks under saline conditions remain limited. This study assessed salt tolerance mechanisms in five Prunus rootstocks (Garnem, GF677, Rootpac 20, Rootpac 40 and Rootpac R) under increasing NaCl concentrations. Results Significant genotypic variation in salt tolerance was observed, with distinct parameter-specific responses challenging simple tolerance rankings. Rootpac R demonstrated balanced performance across growth, physiological and ion homeostasis parameters. Rootpac 20 maintained the best shoot elongation (only 9.9% reduction at 75 mmol L−1 NaCl) despite severe ion dysregulation and near-complete defoliation, revealing independent tolerance mechanisms. GF677 performed well at moderate salinity but showed threshold effects at higher concentrations. Rootpac 40 maintained superior K+/Na+ ratios that did not translate to growth performance, while Garnem showed poor performance in both growth metrics despite large initial size. Initial vigor rankings (based on control performance) showed no correlation with salt tolerance, indicating that these traits are genetically independent. Conclusion Salt tolerance in Prunus rootstocks involves multiple, independent mechanisms including growth maintenance, ion selectivity and physiological stability. No single genotype exhibited universal superiority; instead, each employed distinct tolerance strategies with specific advantages. Rootpac R offers the most balanced performance for general saline conditions, while other genotypes may be preferred for specific situations: Rootpac 20 for short-term growth maintenance, Rootpac 40 for ion homeostasis priority or Garnem for mild stress conditions. These findings emphasize that rootstock selection must consider specific environmental conditions and production goals rather than relying on simple tolerance rankings. © 2025 Society of Chemical Industry.
publishDate 2025
dc.date.none.fl_str_mv 2025
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dc.source.none.fl_str_mv reponame:Zaguán. Repositorio Digital de la Universidad de Zaragoza
instname:Universidad de Zaragoza
instname_str Universidad de Zaragoza
reponame_str Zaguán. Repositorio Digital de la Universidad de Zaragoza
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