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. |
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Copyright © The Author(s), 2021. Published by Science Publishing Group |
Genomic Asymmetry, Allopolyploids, Brassicaceae, Morphology, Phenotypic Dominance
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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
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
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
@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} }
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 -