Synthetic apomixis enables stable transgenerational transmission of heterotic phenotypes in hybrid rice

文献类型： 外文期刊

第一作者： Liu, Chaolei

作者： Liu, Chaolei;Zhang, Yan;Hu, Fengyue;Liu, Qing;Huang, Yong;Wang, Jian;Wang, Chun;Wang, Kejian;He, Zexue;Li, Mengqi;Zhang, Wenli;Wang, Kejian

作者机构：

关键词： synthetic apomixis; hybrid rice; transgenerational heredity; stability

期刊名称：PLANT COMMUNICATIONS （ 影响因子：10.5； 五年影响因子：10.5 ）

ISSN： 2590-3462

年卷期： 2023 年 4 卷 2 期

页码：

收录情况： SCI

摘要： In hybrid plants, heterosis often produces large, vigorous plants with high yields; however, hybrid seeds are generated by costly and laborious crosses of inbred parents. Apomixis, in which a plant produces a clone of itself via asexual reproduction through seeds, may produce another revolution in plant biology. Recently, synthetic apomixis enabled clonal reproduction of F1 hybrids through seeds in rice (Oryza sativa), but the inheritance of the synthetic apomixis trait and superior heterotic phenotypes across generations remained unclear. Here, we propagated clonal plants to the T4 generation and investigated their genetic and molecular stability at each generation. By analyzing agronomic traits, as well as the genome, methylome, transcriptome, and allele-specific transcriptome, we showed that the descendant clonal plants remained stable. Unexpectedly, in addition to normal clonal seeds, the plants also produced a few aneuploids that had eliminated large genomic segments in each generation. Despite the identification of rare aneuploids, the observation that the synthetic apomixis trait is stably transmitted through multiple generations helps confirm the feasibility of using apomixis in the future.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序