Replacement of chromosome 3D with Thinopyrum chromosome 3St led to increased drought tolerance during the flowering stage in wheat
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F25%3A00642161" target="_blank" >RIV/61389030:_____/25:00642161 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1007/s00299-025-03632-5" target="_blank" >https://doi.org/10.1007/s00299-025-03632-5</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00299-025-03632-5" target="_blank" >10.1007/s00299-025-03632-5</a>
Alternative languages
Result language
angličtina
Original language name
Replacement of chromosome 3D with Thinopyrum chromosome 3St led to increased drought tolerance during the flowering stage in wheat
Original language description
The flowering stage is highly susceptible to drought, which significantly reduces wheat grain yield globally. Low genetic diversity in wheat further limits the discovery of optimal gene variants for breeding climate-resilient varieties. The substitution of chromosome 3D by a group 3 chromosome pair from Thinopyrum intermedium x Th. ponticum artificial hybrid was identified using in situ hybridization and genotyping-by-sequencing. This homoeologous substitution showed good functional compensation for grain yield and fertility, similar to the wheat parents ('Mv9kr1' and 'Mv Karizma') in field and greenhouse trials. The substitution line exhibits a semidwarf phenotype due to the Rht8 and Rht2 dwarfing alleles. Automated shoot phenotyping after a 10-day water withdrawal at flowering revealed efficient water preservation allowing to maintain photosynthetic functions, sustained photosynthetic activity, and less chlorophyll degradation, indicated by Normalized Difference Vegetation Index (NDVI) and modified Normalized Difference Index (mND705) values and moderate level of protective functions shown by the expression of stress-related genes. Compared to the wheat parents, the substitution line developed thicker roots with increased volume under drought, resulting in a lower surface-to-volume ratio. This may enhance water storage efficiency and help reduce yield loss under drought conditions.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10611 - Plant sciences, botany
Result continuities
Project
<a href="/en/project/EH22_008%2F0004581" target="_blank" >EH22_008/0004581: TowArds Next GENeration Crops (TANGENC)</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Plant Cell Reports
ISSN
0721-7714
e-ISSN
1432-203X
Volume of the periodical
44
Issue of the periodical within the volume
11
Country of publishing house
DE - GERMANY
Number of pages
22
Pages from-to
242
UT code for WoS article
001595862900001
EID of the result in the Scopus database
2-s2.0-105019113800