High molecular weight glutenin gene diversity in Aegilops tauschii demonstrates unique origin of superior wheat quality
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Published:2021-11-01
Issue:1
Volume:4
Page:
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ISSN:2399-3642
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Container-title:Communications Biology
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language:en
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Short-container-title:Commun Biol
Author:
Delorean Emily, Gao Liangliang, Lopez Jose Fausto Cervantes, Mehrabi Ali, Bentley Alison, Sharon Amir, Keller Beat, Wulff Brande, Steffenson Brian, Steuernagel Burkhard, Sansaloni Carolina Paola, Liu Deng-Cai, Lagudah Evans, Nasyrova Firuza, Brown-Guedira Gina, Sela Hanan, Dvorak Jan, Poland Jesse, Mayer Klaus, Krasileva Ksenia, Gaurav Kumar, Mao Long, Caccamo Mario, Mascher Martin, Luo Mingcheng, Chhuneja Parveen, Davey Rob, Faris Justin, Xu Steven, Nicholson Paul, Chayut Noam, Ambrose Mike, Rawat Nidhi, Tiwari Vijay K., Wulff Brande B. H.ORCID, Ibba Maria ItriaORCID, Poland JesseORCID,
Abstract
AbstractCentral to the diversity of wheat products was the origin of hexaploid bread wheat, which added the D-genome of Aegilops tauschii to tetraploid wheat giving rise to superior dough properties in leavened breads. The polyploidization, however, imposed a genetic bottleneck, with only limited diversity introduced in the wheat D-subgenome. To understand genetic variants for quality, we sequenced 273 accessions spanning the known diversity of Ae. tauschii. We discovered 45 haplotypes in Glu-D1, a major determinant of quality, relative to the two predominant haplotypes in wheat. The wheat allele 2 + 12 was found in Ae. tauschii Lineage 2, the donor of the wheat D-subgenome. Conversely, the superior quality wheat allele 5 + 10 allele originated in Lineage 3, a recently characterized lineage of Ae. tauschii, showing a unique origin of this important allele. These two wheat alleles were also quite similar relative to the total observed molecular diversity in Ae. tauschii at Glu-D1. Ae. tauschii is thus a reservoir for unique Glu-D1 alleles and provides the genomic resource to begin utilizing new alleles for end-use quality improvement in wheat breeding programs.
Funder
National Science Foundation
Publisher
Springer Science and Business Media LLC
Subject
General Agricultural and Biological Sciences,General Biochemistry, Genetics and Molecular Biology,Medicine (miscellaneous)
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