Dynamics of imprinted genes and their epigenetic mechanisms in castor bean seed with persistent endosperm

© 2023 The Authors. New Phytologist © 2023 New Phytologist Foundation.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 240(2023), 5 vom: 16. Dez., Seite 1868-1882
1. Verfasser: Han, Bing (VerfasserIn)
Weitere Verfasser: Li, Yelan, Wu, Di, Li, De-Zhu, Liu, Aizhong, Xu, Wei
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article DNA methylation castor bean endosperm epigenetic mechanisms genomic imprinting histone modifications MET1 protein, Arabidopsis EC 2.1.1.- DNA (Cytosine-5-)-Methyltransferases mehr... EC 2.1.1.37 Arabidopsis Proteins
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520 |a Genomic imprinting refers to parent-of-origin-dependent gene expression and primarily occurs in the endosperm of flowering plants, but its functions and epigenetic mechanisms remain to be elucidated in eudicots. Castor bean, a eudicot with large and persistent endosperm, provides an excellent system for studying the imprinting. Here, we identified 131 imprinted genes in developing endosperms and endosperm at seed germination phase of castor bean, involving into the endosperm development, accumulation of storage compounds and specially seed germination. Our results showed that the transcriptional repression of maternal allele of DNA METHYLTRANSFERASE 1 (MET1) may be required for maternal genome demethylation in the endosperm. DNA methylation analysis showed that only a small fraction of imprinted genes was associated with allele-specific DNA methylation, and most of them were closely associated with constitutively unmethylated regions (UMRs), suggesting a limited role for DNA methylation in controlling genomic imprinting. Instead, histone modifications can be asymmetrically deposited in maternal and paternal genomes in a DNA methylation-independent manner to control expression of most imprinted genes. These results expanded our understanding of the occurrence and biological functions of imprinted genes and showed the evolutionary flexibility of the imprinting machinery and mechanisms in plants 
650 4 |a Journal Article 
650 4 |a DNA methylation 
650 4 |a castor bean 
650 4 |a endosperm 
650 4 |a epigenetic mechanisms 
650 4 |a genomic imprinting 
650 4 |a histone modifications 
650 7 |a MET1 protein, Arabidopsis  |2 NLM 
650 7 |a EC 2.1.1.-  |2 NLM 
650 7 |a DNA (Cytosine-5-)-Methyltransferases  |2 NLM 
650 7 |a EC 2.1.1.37  |2 NLM 
650 7 |a Arabidopsis Proteins  |2 NLM 
700 1 |a Li, Yelan  |e verfasserin  |4 aut 
700 1 |a Wu, Di  |e verfasserin  |4 aut 
700 1 |a Li, De-Zhu  |e verfasserin  |4 aut 
700 1 |a Liu, Aizhong  |e verfasserin  |4 aut 
700 1 |a Xu, Wei  |e verfasserin  |4 aut 
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773 1 8 |g volume:240  |g year:2023  |g number:5  |g day:16  |g month:12  |g pages:1868-1882 
856 4 0 |u http://dx.doi.org/10.1111/nph.19265  |3 Volltext 
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