- Information
- Symbol: BBM1,OsASGR-BBML1,OsBBM1
- MSU: LOC_Os11g19060
- RAPdb: Os11g0295900
- Publication
- A male-expressed rice embryogenic trigger redirected for asexual propagation through seeds., 2018, Nature.
- Expression of genes from paternal alleles in rice zygotes and involvement of OsASGR-BBML1 in initiation of zygotic development., 2019, Plant Cell Physiol.
- Effect of Paternal Genome Excess on the Developmental and Gene Expression Profiles of Polyspermic Zygotes in Rice, 2021, Plants (Basel).
- Somatic embryo initiation by rice BABY BOOM1 involves activation of zygote-expressed auxin biosynthesis genes., 2023, New Phytol.
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Genbank accession number
- Key message
- When genome editing to substitute mitosis for meiosis (MiMe)3,4 is combined with the expression of BBM1 in the egg cell, clonal progeny can be obtained that retain genome-wide parental heterozygosity
- In addition, the suppression of the function of OsASGR-BBML1 and its homologues in zygotes resulted in the developmental arrest, suggesting that OsASGR-BBML1 possesses an important role in initiating zygotic development
- Interestingly, ectopic expression of OsASGR-BBML1 in egg cells induced nuclear and cell divisions, indicating that exogenously expressed OsASGR-BBML1 converts the proliferation status of the egg cell from quiescent to active
- We identify OsYUCCA (OsYUC) auxin biosynthesis genes as direct targets of OsBBM1
- In somatic embryogenesis, exogenous auxin triggers OsBBM1 expression, which then activates endogenous auxin biosynthesis OsYUC genes
- We used gene editing, transcriptome profiling, and chromatin immunoprecipitation to determine the molecular players involved in embryo initiation downstream of OsBBM1
- Zygotic embryo initiation involves a partnership of male and female genomes, through which paternal OsBBM1 activates maternal OsYUC genes
- Ectopic OsBBM1 initiates somatic embryogenesis without exogenous auxins but requires functional OsYUC genes
- Connection
- BBM1~OsASGR-BBML1~OsBBM1, OsYUCCA6~OsYUC6, Somatic embryo initiation by rice BABY BOOM1 involves activation of zygote-expressed auxin biosynthesis genes, Together with OsBBM1-GR DEX-induction data, these results confirm that OsBBM1 directly regulates the expression of OsYUC6, 7 and 9 auxin biosynthesis genes.
- BBM1~OsASGR-BBML1~OsBBM1, OsYUCCA7~OsYUC7, Somatic embryo initiation by rice BABY BOOM1 involves activation of zygote-expressed auxin biosynthesis genes, Together with OsBBM1-GR DEX-induction data, these results confirm that OsBBM1 directly regulates the expression of OsYUC6, 7 and 9 auxin biosynthesis genes.
- BBM1~OsASGR-BBML1~OsBBM1, OsYUC9, Somatic embryo initiation by rice BABY BOOM1 involves activation of zygote-expressed auxin biosynthesis genes, Together with OsBBM1-GR DEX-induction data, these results confirm that OsBBM1 directly regulates the expression of OsYUC6, 7 and 9 auxin biosynthesis genes.
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