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Characterization of wheat-Secale africanum chromosome 5R(a) derivatives carrying Secale specific genes for grain hardness.
Planta. 2016 May; 243(5):1203-12.P

Abstract

MAIN CONCLUSION

New wheat- Secale africanum chromosome 5R (a) substitution and translocation lines were developed and identified by fluorescence in situ hybridization and molecular markers, and chromosome 5R (a) specific genes responsible for grain hardness were isolated. The wild species, Secale africanum Stapf. (genome R(a)R(a)), serves as a valuable germplasm resource for increasing the diversity of cultivated rye (S. cereale L., genome RR) and providing novel genes for wheat improvement. In the current study, fluorescence in situ hybridization (FISH) and molecular markers were applied to characterize new wheat-S. africanum chromosome 5R(a) derivatives. Labeled rye genomic DNA (GISH) and the Oligo-probes pSc119.2 and pTa535 (FISH) were used to study a wheat-S. africanum amphiploid and a disomic 5R(a) (5D) substitution, and to identify a T5DL.5R(a)S translocation line and 5R(a)S and 5R(a)L isotelosome lines. Twenty-one molecular markers were mapped to chromosome 5R(a) arms which will facilitate future rapid identification of 5R(a) introgressions in wheat backgrounds. Comparative analysis of the molecular markers mapped on 5R(a) with homoeologous regions in wheat confirmed a deletion on the chromosome T5DL.5R(a)S, which suggests that the wheat-S. africanum Robertsonian translocation involving homologous group 5 may not be fully compensating. Complete coding sequences at the paralogous puroindoline-a (Pina) and grain softness protein gene (Gsp-1) loci from S. africanum were cloned and localized onto the short arm of chromosome 5R(a). The S. africanum chromosome 5R(a) substitution and translocation lines showed a reduction in the hardness index, which may be associated with the S. africanum- specific Pina and Gsp-1 gene sequences. The present study reports the production of novel wheat-S. africanum chromosome 5R(a) stripe rust resistant derivatives and new rye-specific molecular markers, which may find application in future use of wild Secale genome resources for grain quality studies and disease resistance breeding.

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Publisher Full Text (DOI)

Authors+Show Affiliations

School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, China.

School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, China.

School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, China.

School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, China.

School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, China.

School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, China.

Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, Sichuan, China.

School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 610054, China. yangzujun@uestc.edu.cn.

MeSH

BasidiomycotaChromosomes, PlantCloning, MolecularDisease ResistanceEdible GrainGenes, PlantGenetic MarkersHardnessIn Situ Hybridization, FluorescencePlant DiseasesSecaleSeedsTriticum

Pub Type(s)

Journal Article

Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26883668

Citation

Li, Guangrong, et al. "Characterization of wheat-Secale Africanum Chromosome 5R(a) Derivatives Carrying Secale Specific Genes for Grain Hardness." Planta, vol. 243, no. 5, 2016, pp. 1203-12.

Li G, Gao D, La S, et al. Characterization of wheat-Secale africanum chromosome 5R(a) derivatives carrying Secale specific genes for grain hardness. Planta. 2016;243(5):1203-12.

Li, G., Gao, D., La, S., Wang, H., Li, J., He, W., Yang, E., & Yang, Z. (2016). Characterization of wheat-Secale africanum chromosome 5R(a) derivatives carrying Secale specific genes for grain hardness. Planta, 243(5), 1203-12. https://doi.org/10.1007/s00425-016-2472-z

Li G, et al. Characterization of wheat-Secale Africanum Chromosome 5R(a) Derivatives Carrying Secale Specific Genes for Grain Hardness. Planta. 2016;243(5):1203-12. PubMed PMID: 26883668.

* Article titles in AMA citation format should be in sentence-case

TY - JOUR T1 - Characterization of wheat-Secale africanum chromosome 5R(a) derivatives carrying Secale specific genes for grain hardness. AU - Li,Guangrong, AU - Gao,Dan, AU - La,Shixiao, AU - Wang,Hongjin, AU - Li,Jianbo, AU - He,Weilin, AU - Yang,Ennian, AU - Yang,Zujun, Y1 - 2016/02/16/ PY - 2015/11/26/received PY - 2016/01/21/accepted PY - 2016/2/18/entrez PY - 2016/2/18/pubmed PY - 2017/1/4/medline KW - Agronomic performance KW - Alien introgression KW - In situ hybridization KW - Secale africanum SP - 1203 EP - 12 JF - Planta JO - Planta VL - 243 IS - 5 N2 - MAIN CONCLUSION: New wheat- Secale africanum chromosome 5R (a) substitution and translocation lines were developed and identified by fluorescence in situ hybridization and molecular markers, and chromosome 5R (a) specific genes responsible for grain hardness were isolated. The wild species, Secale africanum Stapf. (genome R(a)R(a)), serves as a valuable germplasm resource for increasing the diversity of cultivated rye (S. cereale L., genome RR) and providing novel genes for wheat improvement. In the current study, fluorescence in situ hybridization (FISH) and molecular markers were applied to characterize new wheat-S. africanum chromosome 5R(a) derivatives. Labeled rye genomic DNA (GISH) and the Oligo-probes pSc119.2 and pTa535 (FISH) were used to study a wheat-S. africanum amphiploid and a disomic 5R(a) (5D) substitution, and to identify a T5DL.5R(a)S translocation line and 5R(a)S and 5R(a)L isotelosome lines. Twenty-one molecular markers were mapped to chromosome 5R(a) arms which will facilitate future rapid identification of 5R(a) introgressions in wheat backgrounds. Comparative analysis of the molecular markers mapped on 5R(a) with homoeologous regions in wheat confirmed a deletion on the chromosome T5DL.5R(a)S, which suggests that the wheat-S. africanum Robertsonian translocation involving homologous group 5 may not be fully compensating. Complete coding sequences at the paralogous puroindoline-a (Pina) and grain softness protein gene (Gsp-1) loci from S. africanum were cloned and localized onto the short arm of chromosome 5R(a). The S. africanum chromosome 5R(a) substitution and translocation lines showed a reduction in the hardness index, which may be associated with the S. africanum- specific Pina and Gsp-1 gene sequences. The present study reports the production of novel wheat-S. africanum chromosome 5R(a) stripe rust resistant derivatives and new rye-specific molecular markers, which may find application in future use of wild Secale genome resources for grain quality studies and disease resistance breeding. SN - 1432-2048 UR - https://www.unboundmedicine.com/medline/citation/26883668/Characterization_of_wheat_Secale_africanum_chromosome_5R_a__derivatives_carrying_Secale_specific_genes_for_grain_hardness_ DB - PRIME DP - Unbound Medicine ER -