Autonomous Development and Regeneration of Isolated Rice Egg Cells in Vitro in a Fertilization-Independent Manner

© The Author(s) 2025. Published by Oxford University Press on behalf of the Society for Experimental Biology.

Bibliographische Detailangaben
Veröffentlicht in:Journal of experimental botany. - 1985. - (2025) vom: 17. Sept.
1. Verfasser: Rattanawong, Kasidit (VerfasserIn)
Weitere Verfasser: Totsuka, Kaori, Satoh, Aya, Ono, Satoka, Lefèvre, Aleksandra, Koshimizu, Shizuka, Yano, Kentaro, Okamoto, Takashi
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2025
Zugriff auf das übergeordnete Werk:Journal of experimental botany
Schlagworte:Journal Article Oryza sativa OsBBML1 japonica Cold stress egg cell genome reduplication parthenogenesis rice
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520 |a Cell cycle and division are suppressed in rice egg cells to avoid precocious development before fertilization. Although cell cycle arrest in egg cells is released by particular environmental stimuli, how quiescence of egg cells is converted to proliferative status remains open. Upon cold treatment, egg cells isolated from japonica (Nipponbare; NB) and indica (Kasalath; KS) subspecies autonomously divided and developed. Egg-derived plants were analyzed for developmental profile, ploidy levels, SNP-based genome sequencing and transcriptome. Cold-treated haploid egg cells regenerated into mature plants, showing varied ploidy levels. Nuclear DNA quantification showed that genome duplication occurred during early parthenogenetic development. Owing to SNPs between NB and KS, inter-subspecific hybrid plants (NB-KS hybrids) were created via electrofusion. Egg cells from NB-KS hybrid developed parthenogenetically into polyploid plants. Diploid and tetraploid plants originating from an NB-KS egg displayed the same homozygous SNP patterns throughout genome, indicating that these plants were doubled and quadrupled haploids. Cold-treated eggs exhibited upregulation of parthenogenesis-related genes. Cold treatment induces parthenogenesis of eggs isolated from crop species, offering cues for elucidating parthenogenetic mechanism at single-cell resolution and benefits for plant breeding technology as progenies possessing only maternal genes are produced by cold treatment and subsequent culture of isolated egg cells 
650 4 |a Journal Article 
650 4 |a Oryza sativa 
650 4 |a OsBBML1 
650 4 |a japonica 
650 4 |a Cold stress 
650 4 |a egg cell 
650 4 |a genome reduplication 
650 4 |a parthenogenesis 
650 4 |a rice 
700 1 |a Totsuka, Kaori  |e verfasserin  |4 aut 
700 1 |a Satoh, Aya  |e verfasserin  |4 aut 
700 1 |a Ono, Satoka  |e verfasserin  |4 aut 
700 1 |a Lefèvre, Aleksandra  |e verfasserin  |4 aut 
700 1 |a Koshimizu, Shizuka  |e verfasserin  |4 aut 
700 1 |a Yano, Kentaro  |e verfasserin  |4 aut 
700 1 |a Okamoto, Takashi  |e verfasserin  |4 aut 
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