Journal
PLANT AND CELL PHYSIOLOGY
Volume 47, Issue 6, Pages 784-787Publisher
OXFORD UNIV PRESS
DOI: 10.1093/pcp/pcj039
Keywords
Arabidopsis thaliana; microsporogenesis; pollen development; programmed cell death; tapetum
Categories
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available