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Mapping QTLs for enhancing early biomass derived from Aegilops tauschii in synthetic hexaploid wheat.
PLoS One. 2020; 15(6):e0234882.Plos

Abstract

Strong early vigour plays a crucial role in wheat yield improvement by enhancing resource utilization efficiency. Synthetic hexaploid wheat (SHW) combines the elite genes of tetraploid wheat with Aegilops tauschii and has been widely used in wheat genetic improvement for its abundant genetic variation. The two SHWs Syn79 and Syn80 were derived from the crossing of the same tetraploid wheat DOY1 with two different Ae. tauschii accessions, AT333 and AT428, respectively. The Syn80 possessed better early vigour traits than Syn79, theretically caused by their D genome from Ae. tauschii. To dissect their genetic basis in a hexaploid background, 203 recombinant inbred lines (RILs) derived from the cross of Syn79 x Syn80 were developed to detect quantitative trait loci (QTL) for four early biomass related traits: plant height (PH), tiller number (TN), shoot fresh weight (SFW) and shoot dry weight (SDW) per plant, under five different environmental conditions. Determined from the data of SNP markers, two genome regions on 1DS and 7D were stably associated with the four early biomass related traits showing pleiotropic effects. Four stable QTLs QPh.saas-1DS, QTn.saas-1DS, QSfw.saas-1DS and QSdw.saas-1DS explaining 7.92, 15.34, 9.64 and 10.15% of the phenotypic variation, respectively, were clustered in the region of 1DS from AX-94812958 to AX-110910133. Meanwhile, QPh.saas-7D, QTn.saas-7D, QSfw.saas-7D and QSdw.saas-7D were flanked by AX-109917900 and AX-110605376 on 7D, explaining 16.12, 24.35, 15.25 and 13.37% of the phenotypic variation on average, respectively. Moreover, these genomic QTLs on 1DS and 7D enhancing biomass in the parent Syn80 were from Ae. tauschii AT428. These findings suggest that these two QTLs from Ae. tauschii can be expressed stably in a hexaploid background at the jointing stage and be used for wheat improvement.

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Authors+Show Affiliations

Yang Y
Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China. Soil and Fertilizer Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China. Key Laboratory of Wheat Biology and Genetic Improvement on Southwestern China (Ministry of Agriculture and Rural Areas), Chengdu, China.
Wan H
Key Laboratory of Wheat Biology and Genetic Improvement on Southwestern China (Ministry of Agriculture and Rural Areas), Chengdu, China. Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.
Yang F
Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China.
Xiao C
Soil and Fertilizer Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.
Li J
Key Laboratory of Wheat Biology and Genetic Improvement on Southwestern China (Ministry of Agriculture and Rural Areas), Chengdu, China. Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.
Ye M
Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China.
Chen C
Soil and Fertilizer Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.
Deng G
Soil and Fertilizer Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.
Wang Q
Key Laboratory of Wheat Biology and Genetic Improvement on Southwestern China (Ministry of Agriculture and Rural Areas), Chengdu, China. Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.
Li A
Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China.
Mao L
Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China.
Yang W
Key Laboratory of Wheat Biology and Genetic Improvement on Southwestern China (Ministry of Agriculture and Rural Areas), Chengdu, China. Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.
Zhou Y
Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China.

MeSH

AegilopsBiomassChromosome MappingCrop ProductionGenome, PlantPlants, Genetically ModifiedPolyploidyQuantitative Trait LociTriticum

Pub Type(s)

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

Language

eng

PubMed ID

32584908

Citation

Yang, Yumin, et al. "Mapping QTLs for Enhancing Early Biomass Derived From Aegilops Tauschii in Synthetic Hexaploid Wheat." PloS One, vol. 15, no. 6, 2020, pp. e0234882.
Yang Y, Wan H, Yang F, et al. Mapping QTLs for enhancing early biomass derived from Aegilops tauschii in synthetic hexaploid wheat. PLoS One. 2020;15(6):e0234882.
Yang, Y., Wan, H., Yang, F., Xiao, C., Li, J., Ye, M., Chen, C., Deng, G., Wang, Q., Li, A., Mao, L., Yang, W., & Zhou, Y. (2020). Mapping QTLs for enhancing early biomass derived from Aegilops tauschii in synthetic hexaploid wheat. PloS One, 15(6), e0234882. https://doi.org/10.1371/journal.pone.0234882
Yang Y, et al. Mapping QTLs for Enhancing Early Biomass Derived From Aegilops Tauschii in Synthetic Hexaploid Wheat. PLoS One. 2020;15(6):e0234882. PubMed PMID: 32584908.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Mapping QTLs for enhancing early biomass derived from Aegilops tauschii in synthetic hexaploid wheat. AU - Yang,Yumin, AU - Wan,Hongshen, AU - Yang,Fan, AU - Xiao,Chun, AU - Li,Jun, AU - Ye,Meijin, AU - Chen,Chunxiu, AU - Deng,Guangmin, AU - Wang,Qin, AU - Li,Aili, AU - Mao,Long, AU - Yang,Wuyun, AU - Zhou,Yonghong, Y1 - 2020/06/25/ PY - 2020/02/13/received PY - 2020/06/03/accepted PY - 2020/6/26/entrez PY - 2020/6/26/pubmed PY - 2020/9/10/medline SP - e0234882 EP - e0234882 JF - PloS one JO - PLoS One VL - 15 IS - 6 N2 - Strong early vigour plays a crucial role in wheat yield improvement by enhancing resource utilization efficiency. Synthetic hexaploid wheat (SHW) combines the elite genes of tetraploid wheat with Aegilops tauschii and has been widely used in wheat genetic improvement for its abundant genetic variation. The two SHWs Syn79 and Syn80 were derived from the crossing of the same tetraploid wheat DOY1 with two different Ae. tauschii accessions, AT333 and AT428, respectively. The Syn80 possessed better early vigour traits than Syn79, theretically caused by their D genome from Ae. tauschii. To dissect their genetic basis in a hexaploid background, 203 recombinant inbred lines (RILs) derived from the cross of Syn79 x Syn80 were developed to detect quantitative trait loci (QTL) for four early biomass related traits: plant height (PH), tiller number (TN), shoot fresh weight (SFW) and shoot dry weight (SDW) per plant, under five different environmental conditions. Determined from the data of SNP markers, two genome regions on 1DS and 7D were stably associated with the four early biomass related traits showing pleiotropic effects. Four stable QTLs QPh.saas-1DS, QTn.saas-1DS, QSfw.saas-1DS and QSdw.saas-1DS explaining 7.92, 15.34, 9.64 and 10.15% of the phenotypic variation, respectively, were clustered in the region of 1DS from AX-94812958 to AX-110910133. Meanwhile, QPh.saas-7D, QTn.saas-7D, QSfw.saas-7D and QSdw.saas-7D were flanked by AX-109917900 and AX-110605376 on 7D, explaining 16.12, 24.35, 15.25 and 13.37% of the phenotypic variation on average, respectively. Moreover, these genomic QTLs on 1DS and 7D enhancing biomass in the parent Syn80 were from Ae. tauschii AT428. These findings suggest that these two QTLs from Ae. tauschii can be expressed stably in a hexaploid background at the jointing stage and be used for wheat improvement. SN - 1932-6203 UR - https://www.unboundmedicine.com/medline/citation/32584908/Mapping_QTLs_for_enhancing_early_biomass_derived_from_Aegilops_tauschii_in_synthetic_hexaploid_wheat_ DB - PRIME DP - Unbound Medicine ER -