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Peer-reviewedCC BYFrontiers in Plant Science

Identification of novel major quantitative trait loci associated with selenium and zinc accumulation in Aegilops tauschii

  • Hong Chen1,2,3,4
  • Guoqing Wang1,2,3,4
  • Wenhui Tian1,2,3,4
  • Shunzong Ning5,6,4
  • Dengcai Liu5,6,4
  • Bo Zhang5,6,4
  • Bo Zhang1,2
  • Tao Liu1,2
6 affiliations
  1. 1Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences
  2. 2Qinghai Province Key Laboratory of Crop Molecular Breeding
  3. 3University of Chinese Academy of Sciences
  4. 4Northwest Institute of Plateau Biology Chinese Academy of Sciences
  5. 5State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University
  6. 6Triticeae Research Institute, Sichuan Agricultural University
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Abstract

Background and aims Wheat is the major nutrient source for numerous people. Aegilops tauschii Coss. (DD), the D genome donor of common wheat (BBAADD), exhibits abundant genetic variations in selenium and zinc concentrations. Ae. tauschii accession AS2407 exhibited prominent Se and Zn accumulation ability. The objectives of this study were to map Se and Zn accumulation-related quantitative trait loci (QTLs) and to identify candidate genes controlling Se and Zn accumulation in Ae. tauschii. Methods In this study, quantitative trait locus (QTL) mapping was carried out for selenium and zinc accumulation in the aerial parts of recombinant inbred lines (RILs) derived from two subspecies, AS2407 (Ae. tauschii. ssp. strangulate) and AS65 (Ae. tauschii. ssp. tauchii), and candidate genes were screened. Kompetitive allele-specific polymerase chain reaction (KASP) markers, which are closely linked to QTLs, were developed, and their distributions were detected in a natural population of Ae. tauschii. Results QTLs controlling selenium and zinc content were identified on chromosomes 1D and 2D, named QSe-1D and QZn-2D, respectively, which could explain 11.94% and 13.49% of the phenotypic variation, respectively. Five selenium-related candidate genes and three zinc-related candidate genes were screened. KASP markers (KASP_Chr1_22217614 and KASP_Chr2_57200260) were developed. QSe-1D and QZn-2D are the first mapped QTLs controlling selenium and zinc accumulation in the aerial part of Ae. tauschii. Conclusions These QTLs and KASP markers will be useful for quality improvement of wheat high nutrition and valuable for understanding the biological basis of Se and Zn intake in Ae. tauschii.

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Cite

BibTeXRIS
BibTeX
@article{chen2026identification,
  title = {{Identification of novel major quantitative trait loci associated with selenium and zinc accumulation in Aegilops tauschii}},
  author = {Hong Chen and Guoqing Wang and Wenhui Tian and Shunzong Ning and Dengcai Liu and Bo Zhang and Bo Zhang and Tao Liu},
  journal = {Frontiers in Plant Science},
  year = {2026},
  month = aug,
  doi = {10.3389/fpls.2026.1892742},
  url = {https://doi.org/10.3389/fpls.2026.1892742},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Identification of novel major quantitative trait loci associated with selenium and zinc accumulation in Aegilops tauschii
AU  - Hong Chen
AU  - Guoqing Wang
AU  - Wenhui Tian
AU  - Shunzong Ning
AU  - Dengcai Liu
AU  - Bo Zhang
AU  - Bo Zhang
AU  - Tao Liu
PY  - 2026
DA  - 2026/08/12
JO  - Frontiers in Plant Science
DO  - 10.3389/fpls.2026.1892742
UR  - https://doi.org/10.3389/fpls.2026.1892742
AB  - Background and aims Wheat is the major nutrient source for numerous people. Aegilops tauschii Coss. (DD), the D genome donor of common wheat (BBAADD), exhibits abundant genetic variations in selenium and zinc concentrations. Ae. tauschii accession AS2407 exhibited prominent Se and Zn accumulation ability. The objectives of this study were to map Se and Zn accumulation-related quantitative trait loci (QTLs) and to identify candidate genes controlling Se and Zn accumulation in Ae. tauschii. Methods In this study, quantitative trait locus (QTL) mapping was carried out for selenium and zinc accumulation in the aerial parts of recombinant inbred lines (RILs) derived from two subspecies, AS2407 (Ae. tauschii. ssp. strangulate) and AS65 (Ae. tauschii. ssp. tauchii), and candidate genes were screened. Kompetitive allele-specific polymerase chain reaction (KASP) markers, which are closely linked to QTLs, were developed, and their distributions were detected in a natural population of Ae. tauschii. Results QTLs controlling selenium and zinc content were identified on chromosomes 1D and 2D, named QSe-1D and QZn-2D, respectively, which could explain 11.94% and 13.49% of the phenotypic variation, respectively. Five selenium-related candidate genes and three zinc-related candidate genes were screened. KASP markers (KASP_Chr1_22217614 and KASP_Chr2_57200260) were developed. QSe-1D and QZn-2D are the first mapped QTLs controlling selenium and zinc accumulation in the aerial part of Ae. tauschii. Conclusions These QTLs and KASP markers will be useful for quality improvement of wheat high nutrition and valuable for understanding the biological basis of Se and Zn intake in Ae. tauschii.
SN  - 1664-462X
ER  -