Advanced search
1 file | 4.79 MB Add to list

Paternally imprinted LATE‐FLOWERING2 transcription factor contributes to paternal‐excess interploidy hybridization barriers in wheat

Author
Organization
Abstract
Interploidy hybridization between hexaploid and tetraploid genotypes occurred repeatedly during genomic introgression events throughout wheat evolution, and is commonly employed in wheat breeding programs. Hexaploid wheat usually serves as maternal parent because the reciprocal cross generates progeny with severe defects and poor seed germination, but the underlying mechanism is poorly understood. Here, we performed detailed analysis of phenotypic variation in endosperm between two interploidy reciprocal crosses arising from tetraploid (Triticum durum, AABB) and hexaploid wheat (Triticum aestivum, AABBDD). In the paternal- vs. the maternal-excess cross, the timing of endosperm cellularization was delayed and starch granule accumulation in the endosperm was repressed, causing reduced germination percentage. The expression profiles of genes involved in nutrient metabolism differed strongly between these endosperm types. Furthermore, expression patterns of parental alleles were dramatically disturbed in interploidy vs. intraploidy crosses, leading to increased number of imprinted genes. The endosperm-specific TaLFL2 showed a paternally imprinted expression pattern in interploidy crosses partially due to allele-specific DNA methylation. Paternal TaLFL2 binds to and represses a nutrient accumulation regulator TaNAC019, leading to reduced storage protein and starch accumulation during endosperm development in paternal excess cross, as confirmed by interploidy crosses between tetraploid wild-type and CRISPR-Cas9 generated hexaploid mutants. These findings reveal a contribution of genomic imprinting to paternal excess interploidy hybridization barriers during wheat evolution history and explains why experienced breeders preferentially exploit maternal excess interploidy crosses in wheat breeding programs. This article is protected by copyright. All rights reserved.
Keywords
imprinting, interploidy cross, wheat, SEED DEVELOPMENT, GENE-EXPRESSION, COMMON WHEAT, D GENOME, ENDOSPERM, CROSSES, DOSAGE, INTROGRESSION, ORIGIN, DURUM

Downloads

  • JIPB - 2023 - Yang - Paternally imprinted LATE‐FLOWERING2 transcription factor contributes to paternal‐excess interploidy (1).pdf
    • full text (Published version)
    • |
    • open access
    • |
    • PDF
    • |
    • 4.79 MB

Citation

Please use this url to cite or link to this publication:

MLA
Yang, Guanghui, et al. “Paternally Imprinted LATE‐FLOWERING2 Transcription Factor Contributes to Paternal‐excess Interploidy Hybridization Barriers in Wheat.” JOURNAL OF INTEGRATIVE PLANT BIOLOGY, vol. 65, no. 12, 2023, pp. 2587–603, doi:10.1111/jipb.13574.
APA
Yang, G., Feng, M., Yu, K., Cui, G., Zhou, Y., Sun, L., … Xin, M. (2023). Paternally imprinted LATE‐FLOWERING2 transcription factor contributes to paternal‐excess interploidy hybridization barriers in wheat. JOURNAL OF INTEGRATIVE PLANT BIOLOGY, 65(12), 2587–2603. https://doi.org/10.1111/jipb.13574
Chicago author-date
Yang, Guanghui, Man Feng, Kuohai Yu, Guangxian Cui, Yan Zhou, Lv Sun, Lulu Gao, et al. 2023. “Paternally Imprinted LATE‐FLOWERING2 Transcription Factor Contributes to Paternal‐excess Interploidy Hybridization Barriers in Wheat.” JOURNAL OF INTEGRATIVE PLANT BIOLOGY 65 (12): 2587–2603. https://doi.org/10.1111/jipb.13574.
Chicago author-date (all authors)
Yang, Guanghui, Man Feng, Kuohai Yu, Guangxian Cui, Yan Zhou, Lv Sun, Lulu Gao, Yumei Zhang, Huiru Peng, Yingyin Yao, Zhaorong Hu, Vincenzo Rossi, Ive De Smet, Zhongfu Ni, Qixin Sun, and Mingming Xin. 2023. “Paternally Imprinted LATE‐FLOWERING2 Transcription Factor Contributes to Paternal‐excess Interploidy Hybridization Barriers in Wheat.” JOURNAL OF INTEGRATIVE PLANT BIOLOGY 65 (12): 2587–2603. doi:10.1111/jipb.13574.
Vancouver
1.
Yang G, Feng M, Yu K, Cui G, Zhou Y, Sun L, et al. Paternally imprinted LATE‐FLOWERING2 transcription factor contributes to paternal‐excess interploidy hybridization barriers in wheat. JOURNAL OF INTEGRATIVE PLANT BIOLOGY. 2023;65(12):2587–603.
IEEE
[1]
G. Yang et al., “Paternally imprinted LATE‐FLOWERING2 transcription factor contributes to paternal‐excess interploidy hybridization barriers in wheat,” JOURNAL OF INTEGRATIVE PLANT BIOLOGY, vol. 65, no. 12, pp. 2587–2603, 2023.
@article{01HE2E7F098ZS8HXJ3F3BY6SRZ,
  abstract     = {{Interploidy hybridization between hexaploid and tetraploid genotypes occurred repeatedly during genomic introgression events throughout wheat evolution, and is commonly employed in wheat breeding programs. Hexaploid wheat usually serves as maternal parent because the reciprocal cross generates progeny with severe defects and poor seed germination, but the underlying mechanism is poorly understood. Here, we performed detailed analysis of phenotypic variation in endosperm between two interploidy reciprocal crosses arising from tetraploid (Triticum durum, AABB) and hexaploid wheat (Triticum aestivum, AABBDD). In the paternal- vs. the maternal-excess cross, the timing of endosperm cellularization was delayed and starch granule accumulation in the endosperm was repressed, causing reduced germination percentage. The expression profiles of genes involved in nutrient metabolism differed strongly between these endosperm types. Furthermore, expression patterns of parental alleles were dramatically disturbed in interploidy vs. intraploidy crosses, leading to increased number of imprinted genes. The endosperm-specific TaLFL2 showed a paternally imprinted expression pattern in interploidy crosses partially due to allele-specific DNA methylation. Paternal TaLFL2 binds to and represses a nutrient accumulation regulator TaNAC019, leading to reduced storage protein and starch accumulation during endosperm development in paternal excess cross, as confirmed by interploidy crosses between tetraploid wild-type and CRISPR-Cas9 generated hexaploid mutants. These findings reveal a contribution of genomic imprinting to paternal excess interploidy hybridization barriers during wheat evolution history and explains why experienced breeders preferentially exploit maternal excess interploidy crosses in wheat breeding programs. This article is protected by copyright. All rights reserved.}},
  author       = {{Yang, Guanghui and Feng, Man and Yu, Kuohai and Cui, Guangxian and Zhou, Yan and Sun, Lv and Gao, Lulu and Zhang, Yumei and Peng, Huiru and Yao, Yingyin and Hu, Zhaorong and Rossi, Vincenzo and De Smet, Ive and Ni, Zhongfu and Sun, Qixin and Xin, Mingming}},
  issn         = {{1672-9072}},
  journal      = {{JOURNAL OF INTEGRATIVE PLANT BIOLOGY}},
  keywords     = {{imprinting,interploidy cross,wheat,SEED DEVELOPMENT,GENE-EXPRESSION,COMMON WHEAT,D GENOME,ENDOSPERM,CROSSES,DOSAGE,INTROGRESSION,ORIGIN,DURUM}},
  language     = {{eng}},
  number       = {{12}},
  pages        = {{2587--2603}},
  title        = {{Paternally imprinted LATE‐FLOWERING2 transcription factor contributes to paternal‐excess interploidy hybridization barriers in wheat}},
  url          = {{http://doi.org/10.1111/jipb.13574}},
  volume       = {{65}},
  year         = {{2023}},
}

Altmetric
View in Altmetric
Web of Science
Times cited: