期刊
FEBS LETTERS
卷 597, 期 3, 页码 407-417出版社
WILEY
DOI: 10.1002/1873-3468.14570
关键词
double fertilization; embryo dependence; endosperm; single fertilization
In this study, an endosperm-specific gene, LBD35, was identified by transcriptome and cytological analyses of double-fertilized and single-fertilized seeds. The analysis revealed 141 genes, including 31 genes for small cysteine-rich peptides, that are expressed in a double fertilization-dependent manner. The results provide insights into the regulation of endosperm gene expression during embryo development.
Endosperm-embryo development in flowering plants is regulated coordinately by signal exchange during seed development. However, such a reciprocal control mechanism has not been clearly identified. In this study, we identified an endosperm-specific gene, LBD35, expressed in an embryonic development-dependent manner, by a comparative transcriptome and cytological analyses of double-fertilized and single-fertilized seeds prepared by using the kokopelli mutant, which frequently induces single fertilization events. Transcriptome analysis using LBD35 as a marker of the central cell fertilization event identified that 141 genes, including 31 genes for small cysteine-rich peptides, are expressed in a double fertilization-dependent manner. Our results reveal possible embryonic signals that regulate endosperm gene expression and provide a practicable method to identify genes involved in the communication during endosperm-embryo development.
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