Abolition of the tapetum suicide program ruins microsporogenesis

Takahiro Kawanabe, Tohru Ariizumi, Maki Kawai-Yamada, Hirofumi Uchimiya, Kinya Toriyama

研究成果: Article査読

110 被引用数 (Scopus)

抄録

Microsporogenesis in angiosperms takes places within the anther. Microspores are surrounded by a layer of cells, the tapetum, which degenerates during the later stages of pollen development with cytological features characteristic of programmed cell death (PCD). We report herein that the expression of AtBI-1, which suppresses Bax-induced cell death, in the tapetum at the tetrad stage inhibits tapetum degeneration and subsequently results in pollen abortion, while activation of AtBI-1 at the later stage does not. Our results demonstrate that the PCD signal commences at the tetrad stage and that the proper timing of PCD in the tapetum is essential for normal microsporogenesis. JSPP

本文言語English
ページ(範囲)784-787
ページ数4
ジャーナルPlant and Cell Physiology
47
6
DOI
出版ステータスPublished - 2006 6

ASJC Scopus subject areas

  • 生理学
  • 植物科学
  • 細胞生物学

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