Academic Journal
Assessing the drought response of the wild potato relative Solanum brevicaule from contrasting environments.
| Τίτλος: | Assessing the drought response of the wild potato relative Solanum brevicaule from contrasting environments. |
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| Συγγραφείς: | Kozub PC; Instituto de Biología Agrícola de Mendoza (IBAM), UNCuyo-CONICET, Almirante Brown 500, Chacras de Coria, Mendoza, M5528AHB, Argentina. Electronic address: ckozub@fca.uncu.edu.ar., Berli FJ; Instituto de Biología Agrícola de Mendoza (IBAM), UNCuyo-CONICET, Almirante Brown 500, Chacras de Coria, Mendoza, M5528AHB, Argentina; Facultad de Ciencias Agrarias, UNCuyo, Almirante Brown 500, Chacras de Coria, Mendoza, M5528AHB, Argentina., González CV; Instituto de Biología Agrícola de Mendoza (IBAM), UNCuyo-CONICET, Almirante Brown 500, Chacras de Coria, Mendoza, M5528AHB, Argentina; Facultad de Ciencias Agrarias, UNCuyo, Almirante Brown 500, Chacras de Coria, Mendoza, M5528AHB, Argentina., Marfil CF; Facultad de Ciencias Agrarias, UNCuyo, Almirante Brown 500, Chacras de Coria, Mendoza, M5528AHB, Argentina; Estación Experimental Agropecuaria Mendoza, Instituto Nacional de Tecnología Agropecuaria (INTA), San Martin 3853, Luján de Cuyo, Mendoza, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, Buenos Aires, C1425FQB, Argentina., Masuelli RW; Instituto de Biología Agrícola de Mendoza (IBAM), UNCuyo-CONICET, Almirante Brown 500, Chacras de Coria, Mendoza, M5528AHB, Argentina; Facultad de Ciencias Agrarias, UNCuyo, Almirante Brown 500, Chacras de Coria, Mendoza, M5528AHB, Argentina. |
| Πηγή: | Plant physiology and biochemistry : PPB [Plant Physiol Biochem] 2026 Aug; Vol. 237, pp. 111508. Date of Electronic Publication: 2026 Jun 23. |
| Τύπος έκδοσης: | Comparative Study; Journal Article |
| Γλώσσα: | English |
| Στοιχεία περιοδικού: | Publisher: Elsevier Science Country of Publication: France NLM ID: 9882449 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-2690 (Electronic) Linking ISSN: 09819428 NLM ISO Abbreviation: Plant Physiol Biochem Subsets: MEDLINE |
| Imprint Name(s): | Publication: Amsterdam : Elsevier Science Original Publication: Paris : Gauthier-Villars, c1987- |
| Ιατρικοί όροι (MeSH): | Solanum*/physiology , Water*/physiology , Drought Resistance*, Species Specificity ; Genetic Variation ; Genotype ; Secondary Metabolism |
| Περίληψη: | Climate change threatens global food security, particularly for drought-sensitive crops such as potato (Solanum tuberosum). The use of crop wild relatives in breeding remains limited by scarce phenotypic and genotypic information, hindering germplasm selection and conservation planning. In this study, we evaluated the drought response of six genotypes of the wild potato Solanum brevicaule, collected from two contrasting environments within Los Cardones National Park. Plants were subjected to well-watered (WW) and water-deficit (WD) treatments under common garden conditions. Biomass partitioning, yield components, physiological and anatomical traits, and damage- and defense-related responses were evaluated. Water deficit reduced tuber number, tuber weight, stomatal conductance, and leaf relative water content across genotypes, indicating a common plastic response. However, performance and defense traits showed strong site-dependent patterns. Genotypes from the drier site exhibited higher biomass and yield under WW and maintained a stable harvest index under WD, together with increased accumulation of phenolic compounds. In contrast, genotypes from the more humid site displayed lower growth but greater plasticity in water-use efficiency (δ13C) and higher proline accumulation under WD. The relative contribution of site and genotype varied among traits: growth and allocation traits were influenced by both factors, whereas stomatal conductance and photosynthetic efficiency were mainly genotype-dependent, and leaf water status responded uniformly across all genotypes. These results reveal contrasting drought-response strategies in S. brevicaule. This study provides key phenotypic insights to support germplasm conservation and the use of wild relatives in breeding drought-resilient potato cultivars. (Copyright © 2026 The Authors. Published by Elsevier Masson SAS.. All rights reserved.) |
| Competing Interests: | Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. |
| Contributed Indexing: | Keywords: Crop wild relatives; Drought; Genetic reserve; Potato; Water deficit |
| Substance Nomenclature: | 059QF0KO0R (Water) |
| Entry Date(s): | Date Created: 20260626 Date Completed: 20260812 Latest Revision: 20260812 |
| Update Code: | 20260812 |
| DOI: | 10.1016/j.plaphy.2026.111508 |
| PMID: | 42361630 |
| Βάση Δεδομένων: | MEDLINE |
| ISSN: | 1873-2690 |
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| DOI: | 10.1016/j.plaphy.2026.111508 |