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Genomic Asymmetry for Morphology in Allopolyploids Within and out of Brassica

Received: 29 November 2021     Accepted: 14 December 2021     Published: 29 December 2021
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Abstract

The genomic asymmetry in the nonrandom retention and expression of controlling genes for some traits from one parental diploid is obvious in some natural and synthetic allopolyploids, and has the evolutionary implications. Here we review the genomic asymmetry for the morphological performance in three cultivated Brassica allotetraploids and some intergeneric allopolyploids within Brassicaceae species. For the phenotypic biases of Brassica allotetraploids, Brassica oleracea (genomes CC) is dominant over B. nigra (BB) and B. rapa (AA) in B. carinata (CCBB) and B. napus (CCAA), respectively, and B. nigra is dominant over B. rapa in B. juncea (BBAA), showing the C>B>A dominance hierarchy. However, the morphology of several Brassica species including B. oleracea at top dominance is largely recessive in their intergeneric hybrids and allopolyploids with other crucifers, such as Raphanus sativus, Orychophragmus violaceus. The morphology of Arabidopsis thaliana is also recessive in its two allotetraploids. Among the dominant features, the leaf serration is expressed consistently in these intergeneric and Arabidopsis allopolyploids. The phenotype expression of the recessive diploid is subject to the euploidy or aneuploidy state of its genome, and the dominant traits are still mostly expressed in the aneuploidy state of their genome. The morphological biases in these allopolyploids are discussed in the contexts of the genomic structure and interplay.

Published in Journal of Plant Sciences (Volume 9, Issue 6)
DOI 10.11648/j.jps.20210906.18
Page(s) 323-328
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2021. Published by Science Publishing Group

Keywords

Genomic Asymmetry, Allopolyploids, Brassicaceae, Morphology, Phenotypic Dominance

References
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  • APA Style

    Yujiao Shao, Pan Zeng, He Fei-fei, Zaiyun Li. (2021). Genomic Asymmetry for Morphology in Allopolyploids Within and out of Brassica. Journal of Plant Sciences, 9(6), 323-328. https://doi.org/10.11648/j.jps.20210906.18

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    ACS Style

    Yujiao Shao; Pan Zeng; He Fei-fei; Zaiyun Li. Genomic Asymmetry for Morphology in Allopolyploids Within and out of Brassica. J. Plant Sci. 2021, 9(6), 323-328. doi: 10.11648/j.jps.20210906.18

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    AMA Style

    Yujiao Shao, Pan Zeng, He Fei-fei, Zaiyun Li. Genomic Asymmetry for Morphology in Allopolyploids Within and out of Brassica. J Plant Sci. 2021;9(6):323-328. doi: 10.11648/j.jps.20210906.18

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  • @article{10.11648/j.jps.20210906.18,
      author = {Yujiao Shao and Pan Zeng and He Fei-fei and Zaiyun Li},
      title = {Genomic Asymmetry for Morphology in Allopolyploids Within and out of Brassica},
      journal = {Journal of Plant Sciences},
      volume = {9},
      number = {6},
      pages = {323-328},
      doi = {10.11648/j.jps.20210906.18},
      url = {https://doi.org/10.11648/j.jps.20210906.18},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jps.20210906.18},
      abstract = {The genomic asymmetry in the nonrandom retention and expression of controlling genes for some traits from one parental diploid is obvious in some natural and synthetic allopolyploids, and has the evolutionary implications. Here we review the genomic asymmetry for the morphological performance in three cultivated Brassica allotetraploids and some intergeneric allopolyploids within Brassicaceae species. For the phenotypic biases of Brassica allotetraploids, Brassica oleracea (genomes CC) is dominant over B. nigra (BB) and B. rapa (AA) in B. carinata (CCBB) and B. napus (CCAA), respectively, and B. nigra is dominant over B. rapa in B. juncea (BBAA), showing the C>B>A dominance hierarchy. However, the morphology of several Brassica species including B. oleracea at top dominance is largely recessive in their intergeneric hybrids and allopolyploids with other crucifers, such as Raphanus sativus, Orychophragmus violaceus. The morphology of Arabidopsis thaliana is also recessive in its two allotetraploids. Among the dominant features, the leaf serration is expressed consistently in these intergeneric and Arabidopsis allopolyploids. The phenotype expression of the recessive diploid is subject to the euploidy or aneuploidy state of its genome, and the dominant traits are still mostly expressed in the aneuploidy state of their genome. The morphological biases in these allopolyploids are discussed in the contexts of the genomic structure and interplay.},
     year = {2021}
    }
    

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  • TY  - JOUR
    T1  - Genomic Asymmetry for Morphology in Allopolyploids Within and out of Brassica
    AU  - Yujiao Shao
    AU  - Pan Zeng
    AU  - He Fei-fei
    AU  - Zaiyun Li
    Y1  - 2021/12/29
    PY  - 2021
    N1  - https://doi.org/10.11648/j.jps.20210906.18
    DO  - 10.11648/j.jps.20210906.18
    T2  - Journal of Plant Sciences
    JF  - Journal of Plant Sciences
    JO  - Journal of Plant Sciences
    SP  - 323
    EP  - 328
    PB  - Science Publishing Group
    SN  - 2331-0731
    UR  - https://doi.org/10.11648/j.jps.20210906.18
    AB  - The genomic asymmetry in the nonrandom retention and expression of controlling genes for some traits from one parental diploid is obvious in some natural and synthetic allopolyploids, and has the evolutionary implications. Here we review the genomic asymmetry for the morphological performance in three cultivated Brassica allotetraploids and some intergeneric allopolyploids within Brassicaceae species. For the phenotypic biases of Brassica allotetraploids, Brassica oleracea (genomes CC) is dominant over B. nigra (BB) and B. rapa (AA) in B. carinata (CCBB) and B. napus (CCAA), respectively, and B. nigra is dominant over B. rapa in B. juncea (BBAA), showing the C>B>A dominance hierarchy. However, the morphology of several Brassica species including B. oleracea at top dominance is largely recessive in their intergeneric hybrids and allopolyploids with other crucifers, such as Raphanus sativus, Orychophragmus violaceus. The morphology of Arabidopsis thaliana is also recessive in its two allotetraploids. Among the dominant features, the leaf serration is expressed consistently in these intergeneric and Arabidopsis allopolyploids. The phenotype expression of the recessive diploid is subject to the euploidy or aneuploidy state of its genome, and the dominant traits are still mostly expressed in the aneuploidy state of their genome. The morphological biases in these allopolyploids are discussed in the contexts of the genomic structure and interplay.
    VL  - 9
    IS  - 6
    ER  - 

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Author Information
  • College of Chemistry and Life Science, Hubei University of Education, Wuhan, China

  • College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China

  • Department of Natural Sciences, Shantou Polytechnic, Shantou, China

  • College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China

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