Insights into responses to elevated temperatures in Solanum tuberosum cultivars with contrasting sensitivity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F26%3A00646775" target="_blank" >RIV/61389030:_____/26:00646775 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.jplph.2025.154683" target="_blank" >https://doi.org/10.1016/j.jplph.2025.154683</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jplph.2025.154683" target="_blank" >10.1016/j.jplph.2025.154683</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Insights into responses to elevated temperatures in Solanum tuberosum cultivars with contrasting sensitivity

Popis výsledku v původním jazyce

Elevated temperatures caused by climate change threaten potato production. To understand heat stress adaptations and variety-specific responses, plants of a susceptible (Cecile) and a tolerant cultivar (Solara) were exposed to elevated temperatures (30/28 degrees C) for 21 days at tuberization stage. Phenotypic, physiological, transcriptional and metabolic changes were analyzed in comparison to ambient temperatures (21/19 degrees C). Heat stress caused shoot elongation and tuber weight loss, which were more pronounced in Cecile. Transcriptome analysis of leaf samples revealed a stronger decrease of photosynthesis-associated genes in the sensitive cultivar Cecile, which was associated with decreased chlorophyll fluorescence and an early senescence. These effects correlated with strongly elevated levels of salicylic acid and ethylene. In contrast, Solara showed delayed senescence and a higher expression of sugar and amino acid transporters suggesting an adaptive mechanism to maintain carbohydrate and amino acid allocation. The expression of known tuberization regulators including SP6A, exhibited a similar response to heat in both varieties, with decreasing expression of SP6A. Solara exhibited a constitutively higher expression of PEBP14/15 and MADS13, which potentially promote tuberization and may support tuber growth under heat. Regardless of variety, a few genes, such as HSP20 and HSP70, were induced by heat and may serve as heat stress marker genes. Altogether, the results indicate that delayed senescence, stable photosynthesis, efficient assimilate translocation, and differential regulation of tuberization pathways contribute to heat tolerance in Solara. These insights improve our understanding of the molecular basis of heat resilience and provide potential targets for breeding climate-resilient potato varieties.

Název v anglickém jazyce

Insights into responses to elevated temperatures in Solanum tuberosum cultivars with contrasting sensitivity

Popis výsledku anglicky

Elevated temperatures caused by climate change threaten potato production. To understand heat stress adaptations and variety-specific responses, plants of a susceptible (Cecile) and a tolerant cultivar (Solara) were exposed to elevated temperatures (30/28 degrees C) for 21 days at tuberization stage. Phenotypic, physiological, transcriptional and metabolic changes were analyzed in comparison to ambient temperatures (21/19 degrees C). Heat stress caused shoot elongation and tuber weight loss, which were more pronounced in Cecile. Transcriptome analysis of leaf samples revealed a stronger decrease of photosynthesis-associated genes in the sensitive cultivar Cecile, which was associated with decreased chlorophyll fluorescence and an early senescence. These effects correlated with strongly elevated levels of salicylic acid and ethylene. In contrast, Solara showed delayed senescence and a higher expression of sugar and amino acid transporters suggesting an adaptive mechanism to maintain carbohydrate and amino acid allocation. The expression of known tuberization regulators including SP6A, exhibited a similar response to heat in both varieties, with decreasing expression of SP6A. Solara exhibited a constitutively higher expression of PEBP14/15 and MADS13, which potentially promote tuberization and may support tuber growth under heat. Regardless of variety, a few genes, such as HSP20 and HSP70, were induced by heat and may serve as heat stress marker genes. Altogether, the results indicate that delayed senescence, stable photosynthesis, efficient assimilate translocation, and differential regulation of tuberization pathways contribute to heat tolerance in Solara. These insights improve our understanding of the molecular basis of heat resilience and provide potential targets for breeding climate-resilient potato varieties.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10611 - Plant sciences, botany

Projekt

<a href="/cs/project/GA22-17435S" target="_blank" >GA22-17435S: Nové přístupy hmotnostní spektrometrie při studiu rostlinné imunity</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2026

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Plant Physiology

ISSN

0176-1617

e-ISSN

1618-1328

Svazek periodika

317

Číslo periodika v rámci svazku

FEB

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

17

Strana od-do

154683

Kód UT WoS článku

001660046500001

EID výsledku v databázi Scopus

2-s2.0-105026907833