Removal of the endoplasma membrane upon sperm cell activation after pollen tube discharge

Autor: Naoya Sugi, Rie Izumi, Shun Tomomi, Daichi Susaki, Tetsu Kinoshita, Daisuke Maruyama

Publikováno v: Frontiers in Plant Science, Vol 14 (2023)

In pollen and pollen tubes, immotile sperm cells are enclosed by an inner vegetative plasma membrane (IVPM), a single endomembrane originating from the vegetative-cell plasma membrane. It is widely believed that sperm cells must be removed from the I

Externí odkaz: https://doaj.org/article/1d59d0bcec104d02bd4f3d1d76b1d7a9

Arabidopsis GEX1 Is a Nuclear Membrane Protein of Gametes Required for Nuclear Fusion During Reproduction

Autor: Shuh-ichi Nishikawa, Yuki Yamaguchi, Chiharu Suzuki, Ayaka Yabe, Yuzuru Sato, Daisuke Kurihara, Yoshikatsu Sato, Daichi Susaki, Tetsuya Higashiyama, Daisuke Maruyama

Publikováno v: Frontiers in Plant Science, Vol 11 (2020)

During the life cycle of flowering plants, nuclear fusion, or karyogamy, occurs three times: once during female gametogenesis, when the two polar nuclei fuse in the central cell, and twice during double fertilization. In Arabidopsis thaliana, nuclear

Externí odkaz: https://doaj.org/article/33cc544a68c445a0af05bfa713a3f8ff

F-actin regulates polarized secretion of pollen tube attractants in Arabidopsis synergid cell

Autor: Daichi Susaki, Rie Izumi, Takao Oi, Hidenori Takeuchi, Ji Min Shin, Naoya Sugi, Tetsu Kinoshita, Tetsuya Higashiyama, Tomokazu Kawashima, Daisuke Maruyama

Pollen tube attraction is a key event of sexual reproduction in flowering plants. In the ovule, two synergid cells neighboring the egg cell control pollen tube arrival via the active secretion of attractant peptides such as AtLURE1 and XIUQIU from th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f118539fe105960e24f41cda0b4683c7
https://doi.org/10.1101/2022.06.14.496136

Targeted reprogramming of H3K27me3 resets epigenetic memory in plant paternal chromatin

Autor: Elin Axelsson, Daniel Buendía, Michael Borg, Tetsuya Higashiyama, Leonor C. Boavida, Yannick Jacob, Frédéric Berger, Chantal LeBlanc, Jörg Becker, Philipp Voigt, Robert A. Martienssen, Daichi Susaki, Tomokazu Kawashima

Publikováno v: Nat Cell Biol
Borg, M, Jacob, Y, Susaki, D, LeBlanc, C, Buendía, D, Axelsson, E, Kawashima, T, Voigt, P, Boavida, L, Becker, J, Higashiyama, T, Martienssen, R & Berger, F 2020, ' Targeted reprogramming of H3K27me3 resets epigenetic memory in plant paternal chromatin ', Nature Cell Biology, vol. 22, no. 6, pp. 621-629 . https://doi.org/10.1038/s41556-020-0515-y

Epigenetic marks are reprogrammed in the gametes to reset genomic potential in the next generation. In mammals, paternal chromatin is extensively reprogrammed through the global erasure of DNA methylation and the exchange of histones with protamines1

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::428ed3bdeca7b4cf526576bccb2ab849
https://doi.org/10.1038/s41556-020-0515-y

Dynamics of the cell fate specifications during female gametophyte development in Arabidopsis

Autor: Daisuke Maruyama, Daisuke Kurihara, Minako Ueda, Tetsuya Higashiyama, Takamasa Suzuki, Daichi Susaki

Publikováno v: PLoS Biology
PLoS Biology, Vol 19, Iss 3, p e3001123 (2021)

The female gametophytes of angiosperms contain cells with distinct functions, such as those that enable reproduction via pollen tube attraction and fertilization. Although the female gametophyte undergoes unique developmental processes, such as sever

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::699f032de73267a3337b01ef56d5e3bb