Physiological, Biochemical, and Transcriptional Responses to Single and Combined Abiotic Stress in Stress-Tolerant and Stress-Sensitive Potato Genotypes

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dc.authoridDemirel, Ufuk/0000-0002-3457-5086
dc.authoridOZTURK, ZAHIDE NESLIHAN/0000-0002-2592-9997
dc.authoridHedley, Peter/0000-0003-0866-324X
dc.contributor.authorDemirel, Ufuk
dc.contributor.authorMorris, Wayne L.
dc.contributor.authorDucreux, Laurence J. M.
dc.contributor.authorYavuz, Caner
dc.contributor.authorAsim, Arslan
dc.contributor.authorTindas, Ilknur
dc.contributor.authorCampbell, Raymond
dc.date.accessioned2024-11-07T13:31:23Z
dc.date.available2024-11-07T13:31:23Z
dc.date.issued2020
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractPotato production is often constrained by abiotic stresses such as drought and high temperatures which are often present in combination. In the present work, we aimed to identify key mechanisms and processes underlying single and combined abiotic stress tolerance by comparative analysis of tolerant and susceptible cultivars. Physiological data indicated that the cultivars Desiree and Unica were stress tolerant while Agria and Russett Burbank were stress susceptible. Abiotic stress caused a greater reduction of photosynthetic carbon assimilation in the susceptible cultivars which was associated with a lower leaf transpiration rate. Oxidative stress, as estimated by the accumulation of malondialdehyde was not induced by stress treatments in any of the genotypes with the exception of drought stress in Russett Burbank. Stress treatment resulted in increases in ascorbate peroxidase activity in all cultivars except Agria which increased catalase activity in response to stress. Transcript profiling highlighted a decrease in the abundance of transcripts encoding proteins associated with PSII light harvesting complex in stress tolerant cultivars. Furthermore, stress tolerant cultivars accumulated fewer transcripts encoding a type-1 metacaspase implicated in programmed cell death. Stress tolerant cultivars exhibited stronger expression of genes associated with plant growth and development, hormone metabolism and primary and secondary metabolism than stress susceptible cultivars. Metabolite profiling revealed accumulation of proline in all genotypes following drought stress that was partially suppressed in combined heat and drought. On the contrary, the sugar alcohols inositol and mannitol were strongly accumulated under heat and combined heat and drought stress while galactinol was most strongly accumulated under drought. Combined heat and drought also resulted in the accumulation of Valine, isoleucine, and lysine in all genotypes. These data indicate that single and multiple abiotic stress tolerance in potato is associated with a maintenance of CO2 assimilation and protection of PSII by a reduction of light harvesting capacity. The data further suggests that stress tolerant cultivars suppress cell death and maintain growth and development via fine tuning of hormone signaling, and primary and secondary metabolism. This study highlights potential targets for the development of stress tolerant potato cultivars.
dc.description.sponsorshipBritish Council Newton Fund Institutional Links Grant [216394957]; Scottish Government Rural and Environment Science and Analytical Services Division as part of the Strategic Research Programme 2016-2021
dc.description.sponsorshipThis research was funded by a British Council Newton Fund Institutional Links Grant No. 216394957 and the Scottish Government Rural and Environment Science and Analytical Services Division as part of the Strategic Research Programme 2016-2021.
dc.identifier.doi10.3389/fpls.2020.00169
dc.identifier.issn1664-462X
dc.identifier.pmid32184796
dc.identifier.scopus2-s2.0-85082551235
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.3389/fpls.2020.00169
dc.identifier.urihttps://hdl.handle.net/11480/14819
dc.identifier.volume11
dc.identifier.wosWOS:000524741900001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherFrontiers Media Sa
dc.relation.ispartofFrontiers in Plant Science
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241106
dc.subjectabiotic stress
dc.subjecttranscriptome
dc.subjectmetabolome
dc.subjectcrop physiology
dc.subjectcrop resilience
dc.titlePhysiological, Biochemical, and Transcriptional Responses to Single and Combined Abiotic Stress in Stress-Tolerant and Stress-Sensitive Potato Genotypes
dc.typeArticle

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