The decreased expression of GW2 homologous genes contributed to the increased grain width and thousand‑grain weight in wheat-Dasypyrum villosum 6VS·6DL translocation lines

Feng, Zhiyu; Song, Long; Song, Wanjun; Qi, Zhongqi; Yuan, Jianlong; Wang, Hong; Chen, Zhaoyan; Guo, Weilong; Xin, Mingming; Liu, Jie; Hu, Zhaorong; Peng, Huiru; Yao, Yingyin; Sun, Qixin; Xing, Jiewen

doi:10.1007/s00122-021-03934-8

Cited by 9 publications

(5 citation statements)

References 93 publications

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“…ponticum 2A/2St and wheat-Th. intermedium 2B/2St disomic substitution lines in the common wheat background increased TGW (Zhang et al 2015b;Feng et al 2021;Wang et al 2022a). However, a few high-yield alien genes are directly used for breeding high-yielding wheat today, because of the genetic burden and the negative relationship between GNS and TGW.…”

Section: Discussionmentioning

confidence: 98%

Introgression of Agropyron cristatum genes to counteract the negative relationship between grain number and grain weight of wheat

Lin

Zhou

Liang

et al. 2022

Preprint

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Agropyron cristatum (2n = 4X = 28, PPPP), which harbour many high-yield and disease-resistance genes, is a promising donor for wheat improvement. Narrow genetic diversity and the trade-off between grain weight and grain number have become bottlenecks for increasing grain yield. In this study, WAT650l, a new translocation line was generated via radiation (60Co-γ rays)-based mutation induction of chromosome 6P addition line 4844-12. Cytological analysis and molecular marker analysis revealed that WAT650l was a 6PL (bin ~ 12–17)·5BS-5BL translocation line. Assessment of agronomic traits and analysis of the BC4F2 and BC5F2 populations suggested that the 6PL terminal chromosome segment in WAT650l resulted in increased flag leaf length, plant height (PH), spikelet number per spike (SNS), kernel number per spikelet (KNS), grain number per spike (GNS) (average increased by 14.07 grains) and thousand-grain weight (TGW) (average increased by 4.31 g) during the growing seasons of 2020–2021 and 2021–2022. Additionally, the increased GNS locus and high-TGW locus of WAT650l were mapped to 6PL (16–17) and 6PL (12–13), respectively, by genetic population analysis of three translocation lines. In summary, by using high-yield genes of A. cristatum and overcoming the negative relationship between GNS and TGW associated with wheat breeding, we provide a valuable germplasm resource for broadening the genetic base of wheat.

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Section: Discussionmentioning

confidence: 98%

Introgression of Agropyron cristatum genes to counteract the negative relationship between grain number and grain weight of wheat

Lin

Zhou

Liang

et al. 2022

Preprint

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“…According to Anamthawat-Jónsson [ 56 ], the sequences on the same homoeologous groups of different species have high collinearity. Also, considering almost all the interaction and recombination happened between wheat and P. huashanica chromosomes were in D genome and Ns genome [ 16 , 22 , 57 – 59 ], we suspect that 6Ns may have better collinearity or higher genetic similarity with 6D rather than 6 A or 6B.…”

Section: Discussionmentioning

confidence: 99%

“…improved the processing quality of dough, especially for bread making [ 14 ]. The addition of genetic components from Thinopyrum and Dasypyrum increased the yield of common wheat [ 15 , 16 ]. A well-known example of the use of related species to improve wheat is the development of the wheat-rye 1B/1R translocation line, which significantly improved the wheat yield and disease resistance.…”

Section: Introductionmentioning

confidence: 99%

The addition of Psathyrostachys Huashanica Keng 6Ns large segment chromosomes has positive impact on stripe rust resistance and plant spikelet number of common wheat

Li,

Cheng

et al. 2024

BMC Plant Biol

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Background Developing novel germplasm by using wheat wild related species is an effective way to rebuild the wheat resource bank. The Psathyrostachys huashanica Keng (P. huashanica, 2n = 2x = 14, NsNs) is regarded as a superior species to improve wheat breeding because of its multi-resistance, early maturation and numerous tiller traits. Introducing genetic components of P. huashanica into the common wheat background is the most important step in achieving the effective use. Therefore, the cytogenetic characterization and influence of the introgressed P. huashanica large segment chromosomes in the wheat background is necessary to be explored. Results In this study, we characterized a novel derived line, named D88-2a, a progeny of the former characterized wheat-P. huashanica partial amphiploid line H8911 (2n = 7x = 49, AABBDDNs). Cytological identification showed that the chromosomal composition of D88-2a was 2n = 44 = 22II, indicating the addition of exogenous chromosomes. Genomic in situ hybridization demonstrated that the supernumerary chromosomes were a pair of homologues from the P. huashanica and could be stably inherited in the common wheat background. Molecular markers and 15 K SNP array indicated that the additional chromosomes were derived from the sixth homoeologous group (i.e., 6Ns) of P. huashanica. Based on the distribution of the heterozygous single-nucleotide polymorphism sites and fluorescence in situ hybridization karyotype of each chromosome, this pair of additional chromosomes was confirmed as P. huashanica 6Ns large segment chromosomes, which contained the entire short arm and the proximal centromere portion of the long arm. In terms of the agronomic traits, the addition line D88-2a exhibited enhanced stripe rust resistance, improved spike characteristics and increased protein content than its wheat parent line 7182. Conclusions The new wheat germplasm D88-2a is a novel cytogenetically stable wheat-P. huashanica 6Ns large segment addition line, and the introgressed large segment alien chromosome has positive impact on plant spikelet number and stripe rust resistance. Thus, this germplasm can be used for genetic improvement of cultivated wheat and the study of functional alien chromosome segment.

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“…In addition to powdery mildew resistance genes, Haynaldia villosa genome also carries stripe rust, wheat yellow mosaic, leaf rust, stripe rust resistance genes, and other excellent genes that can improve wheat yield and quality [ 38 , 39 ]. Therefore, in the process of wheat breeding, scientists have created a series of special germplasms through distant hybridization, such as the translocation line T2VS·2DL that can increase spike length and grain number, the translocation line T6VS·6DL that can increase seed width and thousand kernel weight, and homozygous translocation lines T1AS·1AL-6VS and T4BS·4BL-6VS-4BL that carry the powdery mildew resistance gene Pm21 , all of which have been used as intermediate germplasm in wheat breeding [ 40 , 41 , 42 ].…”

Section: Discussionmentioning

confidence: 99%

Transfer of the Resistance to Multiple Diseases from a Triticum-Secale-Thinopyrum Trigeneric Hybrid to Ningmai 13 and Yangmai 23 Wheat Using Specific Molecular Markers and GISH

Dai

Shi

et al. 2022

Genes

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The middle to lower reaches of the Yangtze River are China’s second largest area for wheat production; wheat disease is more serious there than in other areas because of the high humidity and warm weather. However, most cultivated varieties are susceptible to Fusarium head blight (FHB), powdery mildew, and stripe rust, and the lack of disease-resistant germplasm is an obstacle in wheat breeding. Rye and Thinopyrum elongatum, related species of wheat, carry many genes involved in disease resistance. In this study, a trigeneric hybrid, YZU21, with resistance to FHB, powdery mildew, and stripe rust was used to improve two major wheat cultivars, Ningmai 13 (NM13) and Yangmai 23 (YM23). Specific molecular markers and GISH were used to identify hybrid progenies. Five addition or substitution lines and one translocation line of the Triticum-Secale-Thinopyrum trigeneric hybrid were obtained and evaluated for agronomic traits and the resistance to multiple diseases. The results showed that the six trigeneric hybrid lines had desirable agronomic traits and improved resistance to FHB, powdery mildew, and stripe rust; they might be used as parents in wheat breeding for the resistance to multiple disease.

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The decreased expression of GW2 homologous genes contributed to the increased grain width and thousand‑grain weight in wheat-Dasypyrum villosum 6VS·6DL translocation lines

Cited by 9 publications

References 93 publications

Introgression of Agropyron cristatum genes to counteract the negative relationship between grain number and grain weight of wheat

Introgression of Agropyron cristatum genes to counteract the negative relationship between grain number and grain weight of wheat

The addition of Psathyrostachys Huashanica Keng 6Ns large segment chromosomes has positive impact on stripe rust resistance and plant spikelet number of common wheat

Transfer of the Resistance to Multiple Diseases from a Triticum-Secale-Thinopyrum Trigeneric Hybrid to Ningmai 13 and Yangmai 23 Wheat Using Specific Molecular Markers and GISH

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