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The genome sequencing of Sitopsis species provide insights into its contribution to the B subgenome in Triticum aestivum

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Triticum aestivum Aegilops speltoides Aegilops longissima Triticum dicoccoides Amblyopyrum muticum Aegilops bicornis Aegilops searsii Aegilops sharonensis

PROVIDER: GSE197593 | GEO | 2023/08/22

REPOSITORIES: GEO

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Project description:Background Founder parents play extremely important roles in wheat breeding. Studies into the genetic basis of founder parents and the transmission rules of favorable alleles are of great significance in improving agronomically important traits in wheat. Results Here, a total of 366 founder parents, widely grown cultivars, and derivatives of four representative founder parents were genotyped based on efficient kompetitive allele-specific PCR (KASP) markers in 87 agronomically important genes controlling yield, quality, adaptability, and stress resistance. Genetic composition analysis of founder parents and widely grown cultivars showed a consistently high frequency of favorable alleles for yield-related genes. This analysis further showed that other alleles favorable for resistance, strong gluten, dwarf size, and early heading date were also subject to selective pressure over time. By comparing the transmission of alleles from four representative founder parents to their derivatives during different breeding periods, it was found that the genetic composition of the representative founder parents was optimized as breeding progressed over time, with the number and types of favorable alleles carried gradually increasing and becoming enriched. There are still a large number of favorable alleles in wheat founder parents that have not been fully utilized in breeding selection. Eighty-seven agronomically important genes were used to construct an enrichment map that shows favorable alleles of four founder parents, providing an important theoretical foundation for future identification of candidate wheat founder parents. Conclusions These results reveal the genetic basis of founder parents and allele transmission for 87 agronomically important genes and shed light on breeding strategies for the next generation of elite founder parents in wheat. Supplementary Information The online version contains supplementary material available at 10.1186/s12870-023-04098-x.

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The genome sequencing of Sitopsis species provide insights into its contribution to the B subgenome in Triticum aestivum

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