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Identification and validation of major-effect quantitative trait locus QMS-5B associated with male sterility in photo-thermo-sensitive genic male sterile wheat

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Abstract

Key Message

QMS-5B, a major QTL for photo-thermo-sensitive genic male sterility in wheat, was fine mapped in a 2.15 Mb region harboring a serine/threonine protein kinase gene TraesCS5B03G0887500, which was the most likely candidate gene.

Abstract

Genic male sterility is an essential trait in the utilization of heterosis and hybrid seed production for wheat. Currently, genic male sterile genes have been reported in wheat mutants, but the sterile genes controlling photo-thermo-sensitive genic male sterility in wheat have not been studied systematically. Here, 235 doubled haploid lines derived from a cross between photo-thermo-sensitive genic male sterile line BS462 and its restorer line CP279 were used to map male sterile gene by GenoBaits® Wheat 100 K Panel, bulked segregant exome sequencing (BSE-Seq) and wheat 660 K array. As a result, the major stable QTL on chromosome 5B, QMS-5B, was identified in all four environments, accounting for 7.3–36.4% of the phenotypic variances. Ulteriorly, QMS-5B was delimited to an approximate 2.15 Mb physical interval between KASP-5B5 and KASP-5B6 using kompetitive allele-specific PCR (KASP) markers. Within the interval, twenty-nine high-confidence genes were predicted according to Chinese Spring RefSeq v2.1. TraesCS5B03G0887500, encoding a serine/threonine protein kinase, was identified as the most likely candidate gene for QMS-5B based on weighted gene co-expression network analysis. Expression analysis confirmed that TraesCS5B03G0887500 was significantly differentially expressed in anthers of BS462 and CP279 at different stages under fertile and sterile environments. In addition, flanking KASP marker KASP-5B6 can effectively genotype male sterile lines and restorer lines, and can be used for molecular marker-assisted selection. This study provides insights into for exploring the mechanism of photo-thermo-sensitive genic male sterility in wheat.

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Data availability

All data generated or analyzed during this study are included in this published article and its supplementary information files.

Abbreviations

Bns:

Binucleate stage

BSE-Seq:

Bulked segregant exome sequencing

DH:

Doubled haploid

Ds:

Dyad stage

KASP:

Kompetitive allele-specific PCR

Mmcs:

Microspore mother cell stage

QTL:

Quantitative trait locus

SNP:

Single nucleotide polymorphism

Tns:

Trinucleate stage

Ts:

Tetrad stage

Uns:

Uninucleate stage

WGCNA:

Weighted gene co-expression network analysis

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Acknowledgements

The authors gratefully thank MolBreeding Biotech Ltd. for their help with GenoBaits® Wheat 100K Panel and BSE-Seq analysis. And the authors gratefully thank China Golden Marker Biotech Co., Ltd. for their help with wheat 660K SNP array genotyping.

Funding

This study was sponsored by the National Natural Science Foundation for Young Scientists of China (32001534); Beijing Municipal Natural Science Foundation (6232010); Outstanding Scientist Cultivation Program of BAAFS (JKZX202210); National Natural Science Foundation of China (32272108); Foundation for Youths of BAAFS (QNJJ202212).

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Authors

Contributions

LPZ, XYS and CPZ conceived and designed the study. FQN and ZHL performed the experiments, analyzed the data and wrote the article with contributions from all of the authors. FTZ and SHY provided experimental materials. YML, HZ and HSZ participated in field trials. JFB and YJL revised and polished this manuscript. All authors have read and agreed to the published version of the manuscript.

Corresponding authors

Correspondence to Changping Zhao, Xiyue Song or Liping Zhang.

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Conflict of interest

The authors declare that they have no competing interests.

Ethical approval

We declare that these experiments complied with the ethical standards in China.

Additional information

Communicated by Mark E. Sorrells.

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Niu, F., Liu, Z., Zhang, F. et al. Identification and validation of major-effect quantitative trait locus QMS-5B associated with male sterility in photo-thermo-sensitive genic male sterile wheat. Theor Appl Genet 136, 257 (2023). https://doi.org/10.1007/s00122-023-04500-0

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  • DOI: https://doi.org/10.1007/s00122-023-04500-0

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