Zhang Y, Maruyama D, Toda E, Kinoshita A, Okamoto T, Mitsuda N, Takasaki H, Ohme-Takagi M. Transcriptome analyses uncover reliance of endosperm gene expression on Arabidopsis embryonic development.
FEBS Lett 2023;
597:407-417. [PMID:
36645411 DOI:
10.1002/1873-3468.14570]
[Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/02/2022] [Accepted: 12/02/2022] [Indexed: 01/17/2023]
Abstract
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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