Genomewide association study of Aegilops tauschii traits under seedling-stage cadmium stress
Aegilops tauschii Ais a wild relative of common wheat (Triticum aestivum) and acts as an important resource of elite genes including genes for resistance to biotic and abiotic stresses. To improve the cadmium (Cd) tolerance of wheat varieties using A. tauschii resources, we investigated the genetic...
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| Format: | Article |
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KeAi Communications Co., Ltd.
2015-10-01
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| Series: | Crop Journal |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214514115000653 |
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| author | Peng Qin Lang Wang Kun Liu Shuangshuang Mao Zhanyi Li Shang Gao Haoran Shi Yaxi Liu |
| author_facet | Peng Qin Lang Wang Kun Liu Shuangshuang Mao Zhanyi Li Shang Gao Haoran Shi Yaxi Liu |
| author_sort | Peng Qin |
| collection | DOAJ |
| description | Aegilops tauschii Ais a wild relative of common wheat (Triticum aestivum) and acts as an important resource of elite genes including genes for resistance to biotic and abiotic stresses. To improve the cadmium (Cd) tolerance of wheat varieties using A. tauschii resources, we investigated the genetic variation of biomass-based Cd tolerance in 235 A. tauschii accessions treated with 0 (control) and 100 μmol L− 1 CdCl2 (as Cd stress). Simultaneously, we performed a genomewide association study (GWAS) using a single-nucleotide polymorphism chip containing 7185 markers. Six markers were found to be significantly associated with Cd tolerance by a general linear model and a mixed linear model. These markers were close to several candidate/flanking genes associated with Cd tolerance according to results in public databases, including pdil5-1, Acc-1, DME-5A, TaAP2-D, TaAP2-B, Vrn-B1, and FtsH-like protein gene. The A. tauschii accessions were classified as high, moderate, and low Cd-tolerant according to a secondary index, the synthetic index (SI), in proportions of 9%, 57%, and 34%, respectively. By the average SI, accessions from Afghanistan, Turkey, Azerbaijan, and Iran showed relatively high Cd tolerance. |
| first_indexed | 2024-12-19T13:18:58Z |
| format | Article |
| id | doaj.art-54d9492f2a7e4e8d850979e700207a75 |
| institution | Directory Open Access Journal |
| issn | 2095-5421 2214-5141 |
| language | English |
| last_indexed | 2024-12-19T13:18:58Z |
| publishDate | 2015-10-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Crop Journal |
| spelling | doaj.art-54d9492f2a7e4e8d850979e700207a752022-12-21T20:19:45ZengKeAi Communications Co., Ltd.Crop Journal2095-54212214-51412015-10-013540541510.1016/j.cj.2015.04.005Genomewide association study of Aegilops tauschii traits under seedling-stage cadmium stressPeng Qin0Lang Wang1Kun Liu2Shuangshuang Mao3Zhanyi Li4Shang Gao5Haoran Shi6Yaxi Liu7College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming 650201, China Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, ChinaTriticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, ChinaTriticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, ChinaTriticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, ChinaTriticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, ChinaTriticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, ChinaTriticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, ChinaTriticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, ChinaAegilops tauschii Ais a wild relative of common wheat (Triticum aestivum) and acts as an important resource of elite genes including genes for resistance to biotic and abiotic stresses. To improve the cadmium (Cd) tolerance of wheat varieties using A. tauschii resources, we investigated the genetic variation of biomass-based Cd tolerance in 235 A. tauschii accessions treated with 0 (control) and 100 μmol L− 1 CdCl2 (as Cd stress). Simultaneously, we performed a genomewide association study (GWAS) using a single-nucleotide polymorphism chip containing 7185 markers. Six markers were found to be significantly associated with Cd tolerance by a general linear model and a mixed linear model. These markers were close to several candidate/flanking genes associated with Cd tolerance according to results in public databases, including pdil5-1, Acc-1, DME-5A, TaAP2-D, TaAP2-B, Vrn-B1, and FtsH-like protein gene. The A. tauschii accessions were classified as high, moderate, and low Cd-tolerant according to a secondary index, the synthetic index (SI), in proportions of 9%, 57%, and 34%, respectively. By the average SI, accessions from Afghanistan, Turkey, Azerbaijan, and Iran showed relatively high Cd tolerance.http://www.sciencedirect.com/science/article/pii/S2214514115000653Aegilops tauschiiGWASCadmium toleranceBiomass |
| spellingShingle | Peng Qin Lang Wang Kun Liu Shuangshuang Mao Zhanyi Li Shang Gao Haoran Shi Yaxi Liu Genomewide association study of Aegilops tauschii traits under seedling-stage cadmium stress Crop Journal Aegilops tauschii GWAS Cadmium tolerance Biomass |
| title | Genomewide association study of Aegilops tauschii traits under seedling-stage cadmium stress |
| title_full | Genomewide association study of Aegilops tauschii traits under seedling-stage cadmium stress |
| title_fullStr | Genomewide association study of Aegilops tauschii traits under seedling-stage cadmium stress |
| title_full_unstemmed | Genomewide association study of Aegilops tauschii traits under seedling-stage cadmium stress |
| title_short | Genomewide association study of Aegilops tauschii traits under seedling-stage cadmium stress |
| title_sort | genomewide association study of aegilops tauschii traits under seedling stage cadmium stress |
| topic | Aegilops tauschii GWAS Cadmium tolerance Biomass |
| url | http://www.sciencedirect.com/science/article/pii/S2214514115000653 |
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