Genetic and molecular mechanisms of reproductive isolation in the utilization of heterosis for breeding hybrid rice

Wang, Chaolong; Yu, Xiaowen; Wang, Jian; Zhao, Zhigang; Wan, Jianmin

doi:10.1016/j.jgg.2024.01.007

Journal of Genetics and Genomics

2024

DOI: 10.1016/j.jgg.2024.01.007

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Genetic and molecular mechanisms of reproductive isolation in the utilization of heterosis for breeding hybrid rice

Chaolong Wang,

Xiaowen Yu,

Jian Wang

et al.

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Cited by 4 publications

References 136 publications

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Effect analysis of S5-interacting genes on rice hybrid sterility using nontransgenic gamete killer

Li,

Huang,

Jiang

et al. 2025

Plant Science

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Effect analysis of S5-interacting genes on rice hybrid sterility using nontransgenic gamete killer

Li,

Huang,

Jiang

et al. 2025

Plant Science

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Evolutionary Modes of wtf Meiotic Driver Genes in Schizosaccharomyces pombe

Xu,

Suo,

Zhang

et al. 2024

Genome Biology and Evolution

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Killer meiotic drivers (KMDs) are a class of selfish genetic elements that bias inheritance in their favor by destroying meiotic progeny that do not carry them. How KMDs evolve is not well understood. In the fission yeast Schizosaccharomyces pombe, the largest gene family, known as the wtf genes, is a KMD family that causes intraspecific hybrid sterility. Here, we investigate how wtf genes evolve using long-read-based genome assemblies of 31 distinct S. pombe natural isolates, which encompass the known genetic diversity of S. pombe. Our analysis, involving nearly 1,000 wtf genes in these isolates, yields a comprehensive portrayal of the intraspecific diversity of wtf genes. Leveraging single-nucleotide polymorphisms in adjacent unique sequences, we pinpoint wtf-gene-containing loci that have recently undergone gene conversion events and infer their pre-gene-conversion state. These events include the revival of wtf pseudogenes, lending support to the notion that gene conversion plays a role in preserving this gene family from extinction. Moreover, our investigation reveals that solo long terminal repeats (LTRs) of retrotransposons, frequently found near wtf genes, can act as recombination arms, influencing the upstream regulatory sequences of wtf genes. Additionally, our exploration of the outer boundaries of wtf genes uncovers a previously unrecognized type of directly oriented repeats flanking wtf genes. These repeats may have facilitated the early expansion of the wtf gene family in S. pombe. Our findings enhance the understanding of the mechanisms influencing the evolution of this KMD gene family.

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A Step-by-step Protocol for Crossing and Marker-Assisted Breeding of Asian and African Rice Varieties

Arra,

Loo,

1460538

et al. 2024

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Genetic and molecular mechanisms of reproductive isolation in the utilization of heterosis for breeding hybrid rice

Cited by 4 publications

References 136 publications

Effect analysis of S5-interacting genes on rice hybrid sterility using nontransgenic gamete killer

Effect analysis of S5-interacting genes on rice hybrid sterility using nontransgenic gamete killer

Evolutionary Modes of wtf Meiotic Driver Genes in Schizosaccharomyces pombe

A Step-by-step Protocol for Crossing and Marker-Assisted Breeding of Asian and African Rice Varieties

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