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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10611 - Plant sciences, botany

Project

<a href="/en/project/GA22-17435S" target="_blank" >GA22-17435S: Mass spectrometry approaches for plant immunity studies</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2026

Confidentiality

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

Name of the periodical

Journal of Plant Physiology

ISSN

0176-1617

e-ISSN

1618-1328

Volume of the periodical

317

Issue of the periodical within the volume

FEB

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

17

Pages from-to

154683

UT code for WoS article

001660046500001

EID of the result in the Scopus database

2-s2.0-105026907833