Abstract
Key message
We developed and validated 56 gene-specific semi-thermal asymmetric reverse PCR (STARP) markers for 46 genes of important wheat quality, biotic and abiotic stress resistance, grain yield, and adaptation-related traits for marker-assisted selection in wheat breeding.
Abstract
Development of high-throughput, low-cost, gene-specific molecular markers is important for marker-assisted selection in wheat breeding. In this study, we developed 56 gene-specific semi-thermal asymmetric reverse PCR (STARP) markers for wheat quality, tolerance to biotic and abiotic stresses, grain yield, and adaptation-related traits. The STARP assays were validated by (1) comparison of the assays with corresponding diagnostic STS/CAPS markers on 40 diverse wheat cultivars and (2) characterization of allelic effects based on the phenotypic and genotypic data of three segregating populations and 305 diverse wheat accessions from China and 13 other countries. The STARP assays showed the advantages of high-throughput, accuracy, flexibility, simple assay design, low operational costs, and platform compatibility. The state-of-the-art assays of this study provide a robust and reliable molecular marker toolkit for wheat breeding programs.
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Abbreviations
- AFLP:
-
Amplified fragment length polymorphism
- AMAS primer:
-
Asymmetrically modified allele-specific primer
- AS-probe:
-
Allele-specific probe
- CAPS:
-
Cleaved amplified polymorphic sequences
- FM:
-
Functional markers
- GI:
-
Germination index
- GL:
-
Grain length
- HD:
-
Heading date
- HI:
-
Hardness Index
- HMW-GS:
-
High molecular weight glutenin subunits
- KASP:
-
Kompetitive allele-specific PCR
- KNS:
-
Kernel number per spike
- LMW-GS:
-
Low molecular weight glutenin subunits
- LOX:
-
Lipoxygenase
- MAS:
-
Marker-assisted selection
- MTxW:
-
Mixograph midline 8 min band width
- NS:
-
Number of spikes
- PAGE:
-
Polyacrylamide gel electrophoresis
- PDS:
-
Phytoene desaturase
- PEA primer:
-
Priming element-adjustable primer
- PH:
-
Plant height
- POD:
-
Peroxidase
- PPO:
-
Polyphenol oxidase
- RAPD:
-
Random amplification of polymorphic DNA
- RFLP:
-
Restriction fragment length polymorphism
- SKCS:
-
Single kernel characterization system
- SSR:
-
Simple sequence repeat
- STARP:
-
Semi-thermal asymmetric reverse PCR
- TKW:
-
Thousand kernel weight
- TS-PCR:
-
Temperature-switch PCR
- YPC:
-
Yellow pigment content
- ZDS:
-
Zeta-carotene desaturase
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Acknowledgements
We thank Prof. R. A. McIntosh, Plant Breeding Institute, University of Sydney, for reviewing this manuscript. This work was funded by the National Natural Science Foundation of China (31461143021, 31961143007, 31971929), the National Key Research and Development Program of China (2016YFD0101802, 2016YFE0108600), and CAAS Science and Technology Innovation Program.
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YYW designed all assays, executed the experiment, and wrote the paper. WEW, HJ, SNZ, FJL, FMG, JDL, RGW, PZZ, and YXW participated in field trials and collected phenotypic data. SHC helped in designing primers. ML, ZHH, and SD assisted in writing the paper. XCX designed the experiment and wrote the paper. All authors read the final version of the manuscript and approved for publication.
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Wu, Y., Li, M., He, Z. et al. Development and validation of high-throughput and low-cost STARP assays for genes underpinning economically important traits in wheat. Theor Appl Genet 133, 2431–2450 (2020). https://doi.org/10.1007/s00122-020-03609-w
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DOI: https://doi.org/10.1007/s00122-020-03609-w