Chromosome behavior and the molecular basis of meiosis

Jiang, Hanwei; Li, Tao; Fan, Suixing; Jiang, Xiaohua; Shi, Qinghua

doi:10.1360/n052016-00336

Cited by 5 publications

(2 citation statements)

References 36 publications

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“…Reproductive isolation includes both pre-fertilization and post-fertilization reproductive barriers, with hybrid sterility falling under the latter category. Meiosis, an essential process for gametogenesis in sexual reproduction and a prerequisite for species stability, holds significant biological importance [ 19 ]. Current studies indicate that hybrid infertility is primarily caused by disorder in heterochromosome pairing and segregation during meiosis [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Comparative transcriptomic analysis of reproductive characteristics of reciprocal hybrid lineages derived from hybridization between Megalobrama amblycephala and Culter alburnus

Ding,

Zhang,

et al. 2023

BMC Genom Data

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Background Distant hybridization is an important breeding technique for creating new strains with superior traits by integrating two different genomes. Successful hybridization of Megalobrama amblycephala (Blunt snout bream, BSB, 2n = 48) and Culter alburnus (Topmouth culter, TC, 2n = 48) was achieved to establish hybrid lineages (BT and TB), which provide valuable materials for exploring the mechanisms of distant hybridization fertility. In this study, the gonadal tissue transcriptomes of BSB, TC, BT-F1, and TB-F1 were sequenced using Illumina high-throughput sequencing technology to analyze the reproductive characteristics of BT and TB. Results Differential gene expression analysis showed that the differentially expressed genes in BT vs BSB and BT vs TC were mainly enriched in signaling pathways not directly associated with meiosis. While, the differentially expressed genes of TB vs BSB and TB vs TC were mainly enriched in pathways related to meiosis, and most of them were down-regulated, indicating that meiosis is suppressed in TB. Under-dominance (UD) genes were enriched in pathways related to meiosis and DNA repair in TB. Over-dominance (OD) genes were enriched in MAPK signaling pathway, expression level dominance-BSB (ELD-B) genes were enriched in pathways related to steroid hormone synthesis and expression level dominance-TC (ELD-T) genes were not significantly enriched in any pathway in both BT and TB. Conclusions These results suggest that meiotic progression may not be affected in BT, whereas it is clearly inhibited in TB. Offspring of M. amblycephala maternal parent may have better genomic compatibility and fertility. Our study provides important information on the molecular mechanisms of breaking reproductive isolation in distantly hybridized fertile lineages.

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Section: Introductionmentioning

confidence: 99%

Comparative transcriptomic analysis of reproductive characteristics of reciprocal hybrid lineages derived from hybridization between Megalobrama amblycephala and Culter alburnus

Ding,

Zhang,

et al. 2023

BMC Genom Data

View full text Add to dashboard Cite

show abstract

“…Reproductive isolation includes both prefertilization and post-fertilization reproductive barriers, with hybrid sterility falling under the latter category. Meiosis, an essential process for gametogenesis in sexual reproduction and a prerequisite for species stability, holds signi cant biological importance [17]. Current studies indicate that hybrid infertility is primarily caused by disorder in heterochromosome pairing and segregation during meiosis [18].…”

mentioning

confidence: 99%

Reproductive characteristics of reciprocal hybrid lineages derived from hybridization between Megalobrama amblycephala × Culter alburnus

Ding

Zhang

et al. 2023

Preprint

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Background Distant hybridization is an important breeding technique for creating new strains with superior traits by integrating two different genomes. Successful hybridization of Megalobrama amblycephala (BSB, 2n = 48) and Culter alburnus (TC, 2n = 48) was achieved to establish hybrid lineages (BT and TB), which provide valuable materials for exploring the mechanisms of distant hybridization fertility. In this study, the gonadal tissue transcriptomes of BSB, TC, BT-F1, and TB-F1 were sequenced using Illumina high-throughput sequencing technology to analyze the reproductive characteristics of BT and TB.Results Differential gene expression analysis showed that the differentially expressed genes in BT vs BSB and BT vs TC were mainly enriched in signaling pathways not directly associated with meiosis. The differentially expressed genes of TB vs BSB and TB vs TC were mainly enriched in pathways related to meiosis, and most of them were down-regulated, indicating that meiosis is suppressed in TB. UD (under-dominance) genes were enriched in pathways related to meiosis and DNA repair in TB. OD (over-dominance) genes were enriched in MAPK signaling pathway, and ELD-B (expression level dominance-BSB) genes were enriched in pathways related to steroid hormone synthesis in both BT and TB.Conclusions These results suggest that meiotic progression may not be affected in BT, whereas it is clearly inhibited in TB. Offspring of M. amblycephala maternal parent may have better genomic compatibility and fertility. Our study provides important information on the molecular mechanisms of breaking reproductive isolation in distantly hybridized fertile lineages.

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Fertility investigation in F1 hybrid and karyotype analysis of backcross progeny from Misgurnus anguillicaudatus and Paramisgurnus dabryanus

Wang

2022

Aquaculture

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Chromosome behavior and the molecular basis of meiosis

Cited by 5 publications

References 36 publications

Comparative transcriptomic analysis of reproductive characteristics of reciprocal hybrid lineages derived from hybridization between Megalobrama amblycephala and Culter alburnus

Comparative transcriptomic analysis of reproductive characteristics of reciprocal hybrid lineages derived from hybridization between Megalobrama amblycephala and Culter alburnus

Reproductive characteristics of reciprocal hybrid lineages derived from hybridization between Megalobrama amblycephala × Culter alburnus

Fertility investigation in F1 hybrid and karyotype analysis of backcross progeny from Misgurnus anguillicaudatus and Paramisgurnus dabryanus

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