Cited by 172Plant tissue culture and regenerationEpigenetics and DNA MethylationPlant Molecular Biology Research

New Insights into Somatic Embryogenesis: LEAFY COTYLEDON1, BABY BOOM1 and WUSCHEL-RELATED HOMEOBOX4 Are Epigenetically Regulated in Coffea canephora

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Nic-Can, Geovanny I., López-Torres, Adolfo, Barredo-Pool, Felipe, Wrobel, Kazimierz, Loyola-Vargas, Víctor M., Rojas-Herrera, Rafael, De-la-Peña, Clelia·2013·PLoS ONE

Abstract

Plant cells have the capacity to generate a new plant without egg fertilization by a process known as somatic embryogenesis (SE), in which differentiated somatic cells can form somatic embryos able to generate a functional plant. Although there have been advances in understanding the genetic basis of SE, the epigenetic mechanism that regulates this process is still unknown. Here, we show that the embryogenic development of Coffea canephora proceeds through a crosstalk between DNA methylation and histone modifications during the earliest embryogenic stages of SE. We found that low levels of DNA methylation, histone H3 lysine 9 dimethylation (H3K9me2) and H3K27me3 change according to embryo development. Moreover, the expression of LEAFY cotyledon1 (LEC1) and BABY BOOM1 (BBM1) are only observed after SE induction, whereas WUSCHEL-related homeobox4 (WOX4) decreases its expression during embryo maturation. Using a pharmacological approach, it was found that 5-Azacytidine strongly inhibits the embryogenic response by decreasing both DNA methylation and gene expression of LEC1 and BBM1. Therefore, in order to know whether these genes were epigenetically regulated, we used Chromatin Immunoprecipitation (ChIP) assays. It was found that WOX4 is regulated by the repressive mark H3K9me2, while LEC1 and BBM1 are epigenetically regulated by H3K27me3. We conclude that epigenetic regulation plays an important role during somatic embryogenic development, and a molecular mechanism for SE is proposed.

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  1. [39]Borrel B (2012) Make it a decaf. Nature 483: 264– 266. 22422243

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Authors
Nic-Can, G. I., López-Torres, A., Barredo-Pool, F., Wrobel, K., Loyola-Vargas, V. M., Rojas-Herrera, R., & De-la-Peña, C.
Affiliations
  • Autonomous University of Yucatán (MX)
  • Universidad de Guanajuato (MX)
  • Centro de Investigación Científica de Yucatán, A.C (MX)
Venue
PLoS ONE
Published
2013-08-20
Volume
8
Issue
8
Pages
e72160
ISSN
1932-6203 (ISSN-L)
OpenAlex
W1983625874
Cited by
164
References
78
Citations by year
2026: 14 · 2025: 6 · 2024: 20 · 2023: 13 · 2022: 13 · 2021: 14 · 2020: 26 · 2019: 13 · 2018: 14 · 2017: 7 · 2016: 13 · 2015: 7 · 2014: 4
FWCI
3.59
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
Funders
Consejo Nacional de Ciencia y Tecnología
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Plant tissue culture and regeneration
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
Keywords
somatic embryogenesis, Coffea canephora, epigenetic regulation, DNA methylation, histone modifications, H3K9me2, H3K27me3, WOX4, azacitidine, embryonic development, gene expression regulation
MeSH terms
Azacitidine, Histones, Plant Proteins, Protein Processing, Post-Translational, Seeds, Homeodomain Proteins, Gene Expression Regulation, Plant, Gene Expression Regulation, Developmental, DNA Methylation, CCAAT-Enhancer-Binding Proteins, Coffea, Epigenesis, Genetic, Plant Somatic Embryogenesis Techniques

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