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Effects of Aegilops longissima chromosome 1Sl on wheat bread-making quality in two types of translocation lines

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Abstract

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Two wheat–Ae. longissima translocation chromosomes (1BS·1SlL and 1SlS·1BL) were transferred into three commercial wheat varieties, and the new advanced lines showed improved bread-making quality compared to their recurrent parents.

Abstract

Aegilops longissima chromosome 1Sl encodes specific types of gluten subunits that may positively affect wheat bread-making quality. The most effective method of introducing 1Sl chromosomal fragments containing the target genes into wheat is chromosome translocation. Here, a wheat–Ae. longissima 1BS·1SlL translocation line was developed using molecular marker-assisted chromosome engineering. Two types of translocation chromosomes developed in a previous study, 1BS·1SlL and 1SlS·1BL, were introduced into three commercial wheat varieties (Ningchun4, Ningchun50, and Westonia) via backcrossing with marker-assisted selection. Advanced translocation lines were confirmed through chromosome in situ hybridization and genotyping by target sequencing using the wheat 40 K system. Bread-making quality was found to be improved in the two types of advanced translocation lines compared to the corresponding recurrent parents. Furthermore, 1SlS·1BL translocation lines displayed better bread-making quality than 1BS·1SlL translocation lines in each genetic background. Further analysis revealed that high molecular weight glutenin subunit (HMW-GS) contents and expression levels of genes encoding low molecular weight glutenin subunits (LMW-GSs) were increased in 1SlS·1BL translocation lines. Gliadin and gluten-related transcription factors were also upregulated in the grains of the two types of advanced translocation lines compared to the recurrent parents. This study clarifies the impacts of specific glutenin subunits on bread-making quality and provides novel germplasm resources for further improvement of wheat quality through molecular breeding.

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The authors declare that all data supporting the findings of this study are available within the article and the supplementary information files.

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Acknowledgements

We thank Profs. Yueming Yan of Capital Normal University, Beijing, China, and Yiqin Wei of Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan, China, for providing wheat and Ae. longissima materials.

Funding

This research was partly supported by the Department of Science and Technology of Ningxia in China (2019BBF02020) and the National Natural Science Foundation of China (31971945).

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Author notes

  1. Yuliang Qiu, Zhiyang Han, and Ningtao Liu have contributed equally to this work.

Authors and Affiliations

  1. Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China

    Yuliang Qiu, Zhiyang Han, Mei Yu, Haiqiang Chen, Huali Tang, Ke Wang, Zhishan Lin & Xingguo Ye

  2. Institute of Cotton Sciences, Shanxi Agricultural University, Yuncheng, 044000, China

    Yuliang Qiu & Zhiyong Zhao

  3. Keshan Branch, Heilongjiang Academy of Agricultural Sciences, Qiqihar, 161600, China

    Ningtao Liu

  4. Crop Research Institute, Ningxia Academy of Agri-Forestry Sciences, Yinchuan, 750105, China

    Shuangxi Zhang

  5. Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China

    Fangpu Han

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Contributions

XGY conceived and designed the research. XGY and FPH supervised experiments. YLQ, ZYH, and HQC conducted plant crossing and backcrossing. YLQ, ZYH, MY, HLT, and ZSL performed molecular marker screening, cytological identification, genotyping, and transcriptomic analyses. YLQ, HQC, and KW conducted protein composition analyses. YLQ, NTL, SXZ, and ZYZ cultivated wheat materials and assessed agronomic and yield traits. NTL and SXZ managed the bread-making quality evaluation. YLQ, XGY, and FPH wrote and revised the manuscript. All authors have read and approved the final manuscript.

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Correspondence to Fangpu Han or Xingguo Ye.

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Qiu, Y., Han, Z., Liu, N. et al. Effects of Aegilops longissima chromosome 1Sl on wheat bread-making quality in two types of translocation lines. Theor Appl Genet 137, 2 (2024). https://doi.org/10.1007/s00122-023-04504-w

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