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Nucleotide diversity patterns at the DREB1 transcriptional factor gene in the genome donor species of wheat (Triticum aestivum L).
PLoS One. 2019; 14(5):e0217081.Plos

Abstract

Bread wheat (AABBDD) originated from the diploid progenitor Triticum urartu (AA), a relative of Aegilops speltoides (BB), and Ae. tauschii (DD). The DREB1 transcriptional factor plays key regulatory role in low-temperature tolerance. The modern breeding strategies resulted in serious decrease of the agricultural biodiversity, which led to a loss of elite genes underlying abiotic stress tolerance in crops. However, knowledge of this gene's natural diversity is largely unknown in the genome donor species of wheat. We characterized the dehydration response element binding protein 1 (DREB1) gene-diversity pattern in Ae. speltoides, Ae. tauschii, T. monococcum and T. urartu. The highest nucleotide diversity value was detected in Ae. speltoides, followed by Ae. tauschii and T. monococcum. The lowest nucleotide diversity value was observed in T. urartu. Nucleotide diversity and haplotype data might suggest no reduction of nucleotide diversity during T. monococcum domestication. Alignment of the 68 DREB1 sequences found a large-size (70 bp) insertion/deletion in the accession PI486264 of Ae. speltoides, which was different from the copy of sequences from other accessions of Ae. speltoides, suggesting a likely existence of two different ancestral Ae. speltoides forms. Implication of sequences variation of Ae. speltoides on origination of B genome in wheat was discussed.

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Authors+Show Affiliations

College of Agronomy, Anhui Agricultural University, Hefei, Anhui, China.

College of Agronomy, Anhui Agricultural University, Hefei, Anhui, China.

College of Agronomy, Anhui Agricultural University, Hefei, Anhui, China.

College of Agronomy, Anhui Agricultural University, Hefei, Anhui, China.

College of Agronomy, Anhui Agricultural University, Hefei, Anhui, China.

College of Agronomy, Anhui Agricultural University, Hefei, Anhui, China.

College of Agronomy, Anhui Agricultural University, Hefei, Anhui, China. Biology Department, Saint Mary's University, Halifax, NS, Canada.

MeSH

Base SequenceDehydrationGene Expression Regulation, PlantGenetic VariationGenome, PlantHaplotypesPlant ProteinsStress, PhysiologicalTranscription FactorsTriticum

Pub Type(s)

Journal Article

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

Language

eng

PubMed ID

31136598

Citation

Xu, Yi, et al. "Nucleotide Diversity Patterns at the DREB1 Transcriptional Factor Gene in the Genome Donor Species of Wheat (Triticum Aestivum L)." PloS One, vol. 14, no. 5, 2019, pp. e0217081.

Xu Y, Sun FY, Ji C, et al. Nucleotide diversity patterns at the DREB1 transcriptional factor gene in the genome donor species of wheat (Triticum aestivum L). PLoS One. 2019;14(5):e0217081.

Xu, Y., Sun, F. Y., Ji, C., Hu, Q. W., Wang, C. Y., Wu, D. X., & Sun, G. (2019). Nucleotide diversity patterns at the DREB1 transcriptional factor gene in the genome donor species of wheat (Triticum aestivum L). PloS One, 14(5), e0217081. https://doi.org/10.1371/journal.pone.0217081

Xu Y, et al. Nucleotide Diversity Patterns at the DREB1 Transcriptional Factor Gene in the Genome Donor Species of Wheat (Triticum Aestivum L). PLoS One. 2019;14(5):e0217081. PubMed PMID: 31136598.

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

TY - JOUR T1 - Nucleotide diversity patterns at the DREB1 transcriptional factor gene in the genome donor species of wheat (Triticum aestivum L). AU - Xu,Yi, AU - Sun,Fang-Yao, AU - Ji,Chun, AU - Hu,Quan-Wen, AU - Wang,Cheng-Yu, AU - Wu,De-Xiang, AU - Sun,Genlou, Y1 - 2019/05/28/ PY - 2019/02/25/received PY - 2019/05/05/accepted PY - 2019/5/29/entrez PY - 2019/5/29/pubmed PY - 2020/1/30/medline SP - e0217081 EP - e0217081 JF - PloS one JO - PLoS One VL - 14 IS - 5 N2 - Bread wheat (AABBDD) originated from the diploid progenitor Triticum urartu (AA), a relative of Aegilops speltoides (BB), and Ae. tauschii (DD). The DREB1 transcriptional factor plays key regulatory role in low-temperature tolerance. The modern breeding strategies resulted in serious decrease of the agricultural biodiversity, which led to a loss of elite genes underlying abiotic stress tolerance in crops. However, knowledge of this gene's natural diversity is largely unknown in the genome donor species of wheat. We characterized the dehydration response element binding protein 1 (DREB1) gene-diversity pattern in Ae. speltoides, Ae. tauschii, T. monococcum and T. urartu. The highest nucleotide diversity value was detected in Ae. speltoides, followed by Ae. tauschii and T. monococcum. The lowest nucleotide diversity value was observed in T. urartu. Nucleotide diversity and haplotype data might suggest no reduction of nucleotide diversity during T. monococcum domestication. Alignment of the 68 DREB1 sequences found a large-size (70 bp) insertion/deletion in the accession PI486264 of Ae. speltoides, which was different from the copy of sequences from other accessions of Ae. speltoides, suggesting a likely existence of two different ancestral Ae. speltoides forms. Implication of sequences variation of Ae. speltoides on origination of B genome in wheat was discussed. SN - 1932-6203 UR - https://www.unboundmedicine.com/medline/citation/31136598/Nucleotide_diversity_patterns_at_the_DREB1_transcriptional_factor_gene_in_the_genome_donor_species_of_wheat__Triticum_aestivum_L__ DB - PRIME DP - Unbound Medicine ER -