Dehydrin Content and Status of Antioxidant and Osmoprotective Systems of Etiolated Triticum Aestivum Seedlings of Different Genotypes Under Osmotic Stress

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F25%3A10178141" target="_blank" >RIV/00027006:_____/25:10178141 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/journal/10343/articles?filter-by-volume=77&sortBy=newestFirst" target="_blank" >https://link.springer.com/journal/10343/articles?filter-by-volume=77&sortBy=newestFirst</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10343-025-01190-0" target="_blank" >10.1007/s10343-025-01190-0</a>

Result language

angličtina

Original language name

Dehydrin Content and Status of Antioxidant and Osmoprotective Systems of Etiolated Triticum Aestivum Seedlings of Different Genotypes Under Osmotic Stress

Original language description

The accumulation of protein dehydrins and compatible osmolytes and the activation of several components of the antioxidant system are considered to be the major biochemical responses of plants to drought. However, the relationship between these defense responses and their contribution to drought tolerance of individual genotypes remains poorly understood, especially in early stages of plant development. We studied the response of 2-day-old etiolated wheat (Triticum aestivum) seedlings to model drought (exposure to 15% polyethylene glycol (PEG 8000) solution for the next two days). Based on the resistance index (ratio of shoot biomass during drought to control), the cultivars were ranked as follows: Conditor &gt;= Antonivka &gt; Bohemia &gt; Baletka &gt;= Tonnage &gt;= Nordika &gt;= Balitus. The most resistant cultivars, Conditor and Antonivka, showed minimal increases in superoxide anion radicals, hydrogen peroxide, and lipid peroxidation products after exposure to PEG 8000. They also lacked an increase in superoxide dismutase and catalase activities after stress application, and the increase in guaiacol peroxidase activity was small. Dehydrin content in response to osmotic stress increased the most in the sensitive cultivars Tonnage, Balitus, and Baletka, and a significant inverse correlation was found between cultivar resistance index and dehydrin content. In most cultivars studied, osmotic stress caused a decrease in shoot soluble carbohydrate content, and it increased only in the most resistant, Antonivka and Conditor. Proline content increased under stress in all cultivars regardless of resistance. Resistant wheat cultivars retained their growth capacity under moderate osmotic stress due to the maintenance of soluble carbohydrate content and stability of redox homeostasis. The susceptible cultivars showed strong accumulation of dehydrin and activation of antioxidant enzymes, probably due to increased generation of reactive oxygen species. Thus, the resistant cultivars adapt to moderate drought through homeostatic rather than stress-induced mechanisms.

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

40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)

Project

<a href="/en/project/QK22010293" target="_blank" >QK22010293: Genomic and proteomic characteristics of wheat resistance to selected abiotic and biotic stresses</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2025

Confidentiality

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

Name of the periodical

Journal of Crop Health

ISSN

2948-264X

e-ISSN

2948-2658

Volume of the periodical

77

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

16

Pages from-to

115

UT code for WoS article

001518857100002

EID of the result in the Scopus database

2-s2.0-105009347358