Quantitative trait locus mapping for seed dormancy in different post-ripening stages in a Tibetan semi-wild wheat (Triticum aestivum ssp. tibetanum Shao)

Wang, Jirui; Luo, Wei; Wei, Yuming; Qi, Pengfei; Liu, Yaxi; Jiang, Qiantao; Peng, Yuanying; Chen, Guoyue; Dai, Shoufen; Zheng, Youliang; Lan, Xiujin

doi:10.1007/s10681-014-1266-2

Cited by 11 publications

(17 citation statements)

References 29 publications

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“…Our study has provided a new example from a polyploid species, hexaploid wheat, enabling a comparison of the de‐domestications of rice and wheat. Brittle rachises (equivalent to seed shattering in rice) (Cao et al ., ; Chen et al ., ; Jiang et al ., ) and seed dormancy (Lan et al ., ; Jiang et al ., ) are typical features of both Tibetan semi‐wild wheat and weedy rice. In weedy rice, the re‐acquisition of seed shattering was driven by novel genes resulting from mutations (Thurber et al ., ; Subudhi et al ., ; Qi et al ., ; Yao et al ., ), and the development of seed dormancy was due to both pre‐existing variations and new mutations (Gross et al ., ; Xia et al ., ).…”

Section: Discussionmentioning

confidence: 99%

“…Qbr.sau-5A, Br1 3D and Qbr.sau-2D2) for the brittle rachis trait, suggesting that Tibetan semi-wild wheat regained seed dispersal mechanisms through new mutations during de-domestication. In the same mapping population, Jiang et al (2015) identified seven QTL associated with seed dormancy, two of which are unique to Tibetan semi-wild wheat, indicating that the strong seed dormancy is an accumulative result of pre-existing variations in common wheat and new mutations during de-domestication. For example, seed dormancy in weedy rice and Tibetan semi-wild wheat is likely associated with the selection of pre-existing functional alleles related to pericarp color, although the pericarp color of rice and wheat is controlled by different Rc genes (i.e.…”

Section: Comparison Of the De-domestications Of Rice And Wheatmentioning

confidence: 99%

“…Available molecular data indicate that Rc alleles in US (United States) weedy rice likely evolved from landraces rather than new mutations . Similarly, three pre-existing functional Rc alleles were selected for seed dormancy in Tibetan semi-wild wheat (Jiang et al, 2015). The genetic differences in the re-acquisition of brittle rachises (seed shattering) and seed dormancy are clear when we consider that seed dispersal is harmful for crop harvest and seed dormancy is required for crops to avoid pre-harvest sprouting.…”

Section: Comparison Of the De-domestications Of Rice And Wheatmentioning

confidence: 99%

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Re‐acquisition of the brittle rachis trait via a transposon insertion in domestication gene Q during wheat de‐domestication

et al. 2019

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Summary De‐domestication is a unique evolutionary process during which crops re‐acquire wild‐like traits to survive and persist in agricultural fields without the need for human cultivation. The re‐acquisition of seed dispersal mechanisms is crucial for crop de‐domestication. Common wheat is an important cereal crop worldwide. Tibetan semi‐wild wheat is a potential de‐domesticated common wheat subspecies. However, the crucial genes responsible for its brittle rachis trait have not been identified. Genetic mapping, functional analyses and phylogenetic analyses were completed to identify the gene associated with Qbr.sau‐5A, which is a major locus for the brittle rachis trait of Tibetan semi‐wild wheat. The cloned Qbr.sau‐5A gene is a new Q allele (Qt) with a 161‐bp transposon insertion in exon 5. Although Qt is expressed normally, its encoded peptide lacks some key features of the APETALA2 family. The abnormal functions of Qt in developing wheat spikes result in brittle rachises. Phylogenetic and genotyping analyses confirmed that Qt originated from Q in common wheat and is naturally distributed only in Tibetan semi‐wild wheat populations. The identification of Qt provides new evidence regarding the origin of Tibetan semi‐wild wheat, and new insights into the re‐acquisition of wild traits during crop de‐domestication.

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Section: Discussionmentioning

confidence: 99%

Section: Comparison Of the De-domestications Of Rice And Wheatmentioning

confidence: 99%

Section: Comparison Of the De-domestications Of Rice And Wheatmentioning

confidence: 99%

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Re‐acquisition of the brittle rachis trait via a transposon insertion in domestication gene Q during wheat de‐domestication

et al. 2019

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“…from Sinkiang, and Cayazheda 29 (CY, T. aestivum ssp. tibetanum Shao) from Tibet [28]. The other divergent parent was British dwarf cultivar Hussar (HU), which is a good quality cultivar [37].…”

Section: Plant Materials and Experimental Designmentioning

confidence: 99%

“…characterized by a long glume, and the Yunnan hulled wheat, or "Tiekemai", (T. aestivum ssp. yunnanense King) named for its very hard and tough glumes which adhere to the grains [26][27][28]. The unique semi-wild wheat subspecies in China have a primitive chromosomal constitution, which is crucial to probe the effect of domestication on processing quality in wheat breeding [26].…”

Section: Introductionmentioning

confidence: 99%

QTL Detection for Bread Wheat Processing Quality in A Nested Association Mapping Population of Semi-Wild and Domesticated Wheat Varieties

Xiao

Jiang

et al. 2020

Preprint

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Background: Wheat processing quality is an important factor in evaluating overall wheat quality and dough characteristics are important in assessing the processing quality of wheat. As an important germplasm resource, semi-wild wheat plays an important role in the study of wheat processing quality.Results: In this study, Four dough rheological characteristics were therefore collected in four environments using a nested association mapping (NAM) population, consisting of semi-wild and domesticated wheat varieties, which were used to identify quantitative trait loci (QTL) for wheat processing quality. Using an available single nucleotide polymorphism genetic linkage map, a total of 49 QTL for wheat processing quality were detected, explaining 0.36–10.82% of the phenotypic variation. These QTL were located on all wheat chromosomes except for 2D, 3A, 3D, 6B, 6D and 7D. Compared to previous studies, 29 QTL were newly identified. Four novel QTL, QMlPH-1B.4, QMlPH-3B.4, QWdEm-1B.2 and QWdEm-3B.2, were stably identified in three or more environments, of which QMlPH-3B.4 was a major QTL. Moreover, eight important genetic regions for wheat processing quality were identified on chromosomes 1B, 3B and 4D, which showed pleiotropy for dough characters. In addition, out of 49 QTL, 15 favorable alleles came from three semi-wild parents, suggesting that the QTL alleles provided by the semi-wild parent were unutilized in domesticated varieties.Conclusions: The results show that the semi-wild wheat varieties can enrich the existing wheat gene pool and provide broader variation resources for wheat genetic research.

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Genetic dissection of the sensory and textural properties of Chinese white noodles using a specific RIL population

Deng

Chen

et al. 2017

Journal of Integrative Agriculture

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Quantitative trait locus mapping for seed dormancy in different post-ripening stages in a Tibetan semi-wild wheat (Triticum aestivum ssp. tibetanum Shao)

Cited by 11 publications

References 29 publications

Re‐acquisition of the brittle rachis trait via a transposon insertion in domestication gene Q during wheat de‐domestication

Re‐acquisition of the brittle rachis trait via a transposon insertion in domestication gene Q during wheat de‐domestication

QTL Detection for Bread Wheat Processing Quality in A Nested Association Mapping Population of Semi-Wild and Domesticated Wheat Varieties

Genetic dissection of the sensory and textural properties of Chinese white noodles using a specific RIL population

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