Engineering high-frequency apomixis with normal seed production in hybrid rice

Clonal reproduction through seeds, also termed apomixis, has the potential to revolutionize agriculture by allowing hybrid crops to be clonally propagated. Although apomixis has been introduced into rice through <i>de novo</i> engineering in recent years, the poor fertility and low-frequency clonal reproduction of synthetic apomicts hinder the application of apomixis in crop breeding. Here, in elite hybrid rice, we generated many apomicts, which produced clonal progeny with frequencies of > 95.0% and had high even normal fertility through combining enhanced rice BABYBOOM1 (BBM1)-induced parthenogenesis with the simultaneous inactivation of <i>PAIR1</i>, <i>REC8</i>, and <i>OSD1</i>. These synthetic apomicts maintained the agronomic traits of the elite hybrid rice. Our results indicate that fertility-normal hybrids with high penetrance of apomixis can be generated in rice, thereby laying an important foundation for the application of synthetic apomixis in crop breeding.

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Publication Details

Journal
iScience
Published
2024-11-26
DOI
https://doi.org/10.1016/j.isci.2024.111479
Citations
12
Primary Topic
Plant Taxonomy and Phylogenetics
Type
article
Field-Weighted Citation Impact
12.35

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article

Engineering high-frequency apomixis with normal seed production in hybrid rice

Changqing Du, Chunbo Miao, Minglei Song, Haonan Hou et al.
12 citations
iScience
Plant Taxonomy and Phylogenetics
12.35
article

Engineering high-frequency apomixis with normal seed production in hybrid rice

Changqing Du, Chunbo Miao, Minglei Song, Haonan Hou, Jing Zhang, Zhen Chen, Ting Peng, Junzhou Li, Yanxiu Du, Fei Li, Yu Wang, Huixia Liu, Hongzheng Sun, Yafan Zhao, Quanzhi Zhao, Di Liu
article en
12 citations

Abstract

Clonal reproduction through seeds, also termed apomixis, has the potential to revolutionize agriculture by allowing hybrid crops to be clonally propagated. Although apomixis has been introduced into rice through <i>de novo</i> engineering in recent years, the poor fertility and low-frequency clonal reproduction of synthetic apomicts hinder the application of apomixis in crop breeding. Here, in elite hybrid rice, we generated many apomicts, which produced clonal progeny with frequencies of > 95.0% and had high even normal fertility through combining enhanced rice BABYBOOM1 (BBM1)-induced parthenogenesis with the simultaneous inactivation of <i>PAIR1</i>, <i>REC8</i>, and <i>OSD1</i>. These synthetic apomicts maintained the agronomic traits of the elite hybrid rice. Our results indicate that fertility-normal hybrids with high penetrance of apomixis can be generated in rice, thereby laying an important foundation for the application of synthetic apomixis in crop breeding.

iScienceVol. 27(12)
Guizhou University (CN), Southern University of Science and Technology (CN), Henan Agricultural University (CN)
National Natural Science Foundation of China, Natural Science Foundation of Henan Province
Zero hunger
Openalex Percentile: Top 1%
Plant Taxonomy and Phylogenetics
12.35
DOIOpen Access PDFOpenAlex
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