Academic Journal
Physiological characterization of a pepper hybrid rootstock designed to cope with salinity stress
| العنوان: | Physiological characterization of a pepper hybrid rootstock designed to cope with salinity stress |
|---|---|
| المؤلفون: | Lopez-Serrano, Lidia, Canet-Sanchis, Guillermo, Vuletin Selak, Gabriela, Penella, Consuelo, San Bautista Primo, Alberto, López Galarza, Salvador Vicente, Calatayud, Ángeles |
| المساهمون: | Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería Agronómica y del Medio Natural - Escola Tècnica Superior d'Enginyeria Agronòmica i del Medi Natural, European Regional Development Fund, Ministerio de Ciencia e Innovación, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria |
| بيانات النشر: | Elsevier |
| سنة النشر: | 2020 |
| المجموعة: | Universitat Politécnica de Valencia: RiuNet / Politechnical University of Valencia |
| مصطلحات موضوعية: | Antioxidant capacity, Graft, H2O2, Pepper, Photosynthesis, Rootstock, PRODUCCION VEGETAL |
| الوصف: | [EN] In pepper crops, rootstocks that tolerate salt stress are not used because available commercial rootstocks offer limited profits. In this context, we obtained the hybrid NIBER®, a new salinity-tolerant rootstock that has been tested under real salinity field conditions for 3 years with 32%¿80% higher yields than ungrafted pepper plants. This study aimed to set up the initial mechanisms involved in the salinity tolerance of grafted pepper plants using NIBER® as a rootstock to study root-shoot behavior, a basic requirement to develop efficient rootstocks. Gas exchange, Na+/K+, antioxidant capacity, nitrate reductase activity, ABA, proline, H2O2, phenols, MDA concentration and biomass were measured in ungrafted plants of cultivar Adige (A), self-grafted (A/A), grafted onto NIBER® (A/N) and reciprocal grafted plants (N/A), all exposed to 0 mM and 70 mM NaCl over a 10-day period. Salinity significantly and quickly decreased photosynthesis, stomatal conductance and nitrate reductase activity, but to lower extent in A/N plants compared to A, A/A and N/A. A/N plants showed decreases in the Na+/K+ ratio, ABA content and lipid peroxidation activity. This oxidative damage alleviation in A/N was probably due to an enhanced H2O2 level that activates antioxidant capacity to cope salinity stress, and acts as a signal molecule rather than a damaging one by contributing a major increase in phenols and, to a lesser extent, in proline concentration. These traits led to a minor impact on biomass in A/N plants under salinity conditions. Only the plants with the NIBER® rootstock controlled the scion by modulating responses to salinity. ; This work was financed by INIA (Spain) and Ministerio de Ciencia, Innovacion y Universidades through Project RTA2017-00030-0O2-00 and the European Regional Development Fund (ERDF). L. L-S is a beneficiary of a doctoral fellowship (FPI-INIA). ; Lopez-Serrano, L.; Canet-Sanchis, G.; Vuletin Selak, G.; Penella, C.; San Bautista Primo, A.; López Galarza, SV.; Calatayud, Á. (2020). Physiological ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 0981-9428 |
| Relation: | Plant Physiology and Biochemistry; info:eu-repo/grantAgreement/MICINN//RTA2017-00030-C02-00/; https://doi.org/10.1016/j.plaphy.2020.01.016; urn:issn:0981-9428; http://hdl.handle.net/10251/202233 |
| DOI: | 10.1016/j.plaphy.2020.01.016 |
| الاتاحة: | http://hdl.handle.net/10251/202233 https://doi.org/10.1016/j.plaphy.2020.01.016 |
| Rights: | http://creativecommons.org/licenses/by-nc-nd/4.0/ ; info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.3F5684BC |
| قاعدة البيانات: | BASE |
| تدمد: | 09819428 |
|---|---|
| DOI: | 10.1016/j.plaphy.2020.01.016 |