Genome dosage alteration caused by chromosome pyramiding and shuffling effects on karyotypic heterogeneity, reproductive diversity, and phenotypic variation in Zea-Tripsacum allopolyploids
© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature..
KEY MESSAGE: We developed an array of Zea-Tripsacum tri-hybrid allopolyploids with multiple ploidies. We unveiled that changes in genome dosage due to the chromosomes pyramiding and shuffling of three species effects karyotypic heterogeneity, reproductive diversity, and phenotypic variation in Zea-Tripsacum allopolyploids. Polyploidy, or whole genome duplication, has played a major role in evolution and speciation. The genomic consequences of polyploidy have been extensively studied in many plants; however, the extent of chromosomal variation, genome dosage, phenotypic diversity, and heterosis in allopolyploids derived from multiple species remains largely unknown. To address this question, we synthesized an allohexaploid involving Zea mays, Tripsacum dactyloides, and Z. perennis by chromosomal pyramiding. Subsequently, an allooctoploid and an allopentaploid were obtained by hybridization of the allohexaploid with Z. perennis. Moreover, we constructed three populations with different ploidy by chromosomal shuffling (allopentaploid × Z. perennis, allohexaploid × Z. perennis, and allooctoploid × Z. perennis). We have observed 3 types of sexual reproductive modes and 2 types of asexual reproduction modes in the tri-species hybrids, including 2n gamete fusion (2n + n), haploid gamete fusion (n + n), polyspermy fertilization (n + n + n) or 2n gamete fusion (n + 2n), haploid gametophyte apomixis, and asexual reproduction. The tri-hybrids library presents extremely rich karyotype heterogeneity. Chromosomal compensation appears to exist between maize and Z. perennis. A rise in the ploidy of the trihybrids was linked to a higher frequency of chromosomal translocation. Variation in the degree of phenotypic diversity observed in different segregating populations suggested that genome dosage effects phenotypic manifestation. These findings not only broaden our understanding of the mechanisms of polyploid formation and reproductive diversity but also provide a novel insight into genome pyramiding and shuffling driven genome dosage effects and phenotypic diversity.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:137 |
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| Enthalten in: |
TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik - 137(2024), 1 vom: 22. Jan., Seite 28 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Li, Yingzheng [VerfasserIn] |
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Date Completed 23.01.2024 Date Revised 13.02.2024 published: Electronic Citation Status MEDLINE |
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| doi: |
10.1007/s00122-023-04540-6 |
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| 520 | |a KEY MESSAGE: We developed an array of Zea-Tripsacum tri-hybrid allopolyploids with multiple ploidies. We unveiled that changes in genome dosage due to the chromosomes pyramiding and shuffling of three species effects karyotypic heterogeneity, reproductive diversity, and phenotypic variation in Zea-Tripsacum allopolyploids. Polyploidy, or whole genome duplication, has played a major role in evolution and speciation. The genomic consequences of polyploidy have been extensively studied in many plants; however, the extent of chromosomal variation, genome dosage, phenotypic diversity, and heterosis in allopolyploids derived from multiple species remains largely unknown. To address this question, we synthesized an allohexaploid involving Zea mays, Tripsacum dactyloides, and Z. perennis by chromosomal pyramiding. Subsequently, an allooctoploid and an allopentaploid were obtained by hybridization of the allohexaploid with Z. perennis. Moreover, we constructed three populations with different ploidy by chromosomal shuffling (allopentaploid × Z. perennis, allohexaploid × Z. perennis, and allooctoploid × Z. perennis). We have observed 3 types of sexual reproductive modes and 2 types of asexual reproduction modes in the tri-species hybrids, including 2n gamete fusion (2n + n), haploid gamete fusion (n + n), polyspermy fertilization (n + n + n) or 2n gamete fusion (n + 2n), haploid gametophyte apomixis, and asexual reproduction. The tri-hybrids library presents extremely rich karyotype heterogeneity. Chromosomal compensation appears to exist between maize and Z. perennis. A rise in the ploidy of the trihybrids was linked to a higher frequency of chromosomal translocation. Variation in the degree of phenotypic diversity observed in different segregating populations suggested that genome dosage effects phenotypic manifestation. These findings not only broaden our understanding of the mechanisms of polyploid formation and reproductive diversity but also provide a novel insight into genome pyramiding and shuffling driven genome dosage effects and phenotypic diversity | ||
| 650 | 4 | |a Journal Article | |
| 700 | 1 | |a Yan, Xu |e verfasserin |4 aut | |
| 700 | 1 | |a Cheng, Mingjun |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, Zizhou |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Qiyuan |e verfasserin |4 aut | |
| 700 | 1 | |a Duan, Saifei |e verfasserin |4 aut | |
| 700 | 1 | |a Zhou, Yong |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Huaxiong |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Shipeng |e verfasserin |4 aut | |
| 700 | 1 | |a Cheng, Yulin |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Wansong |e verfasserin |4 aut | |
| 700 | 1 | |a Xu, Lulu |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Xiaofeng |e verfasserin |4 aut | |
| 700 | 1 | |a He, Ruyu |e verfasserin |4 aut | |
| 700 | 1 | |a Zhou, Yang |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Chunyan |e verfasserin |4 aut | |
| 700 | 1 | |a Iqbal, Muhammad Zafar |e verfasserin |4 aut | |
| 700 | 1 | |a He, Jianmei |e verfasserin |4 aut | |
| 700 | 1 | |a Rong, Tingzhao |e verfasserin |4 aut | |
| 700 | 1 | |a Tang, Qilin |e verfasserin |4 aut | |
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