4.7 Article

Love Is Strong, and You're so Sweet: JAGGER Is Essential for Persistent Synergid Degeneration and Polytubey Block in Arabidopsis thaliana

Journal

MOLECULAR PLANT
Volume 9, Issue 4, Pages 601-614

Publisher

CELL PRESS
DOI: 10.1016/j.molp.2016.01.002

Keywords

Polytubey; persistent synergid; arabinogalactan proteins; polyspermy

Funding

  1. FEDER through the COMPETE program
  2. Portuguese National funds through FCT, Fundacao para a Ciencia e Tecnologia [PTDC/AGR-GPL/115358/2009]
  3. FCT [SFRH/BD/60995/2009]
  4. COST Action Harnessing Plant Reproduction for Crop Improvement'' [FA0903]
  5. Fundação para a Ciência e a Tecnologia [PTDC/AGR-GPL/115358/2009, SFRH/BD/60995/2009] Funding Source: FCT

Ask authors/readers for more resources

Successful double fertilization and subsequent seed development in flowering plants requires the delivery of two sperm cells, transported by a pollen tube, into the embryo sac of an ovule. The embryo sac cells tightly control synergid cell death, and as a result the polyspermy block. Arabinogalactan proteins are highly glycosylated proteins thought to be involved in several steps of the reproductive process. We show that JAGGER, Arabinogalactan Protein 4, is an important molecule necessary to prevent the growth of multiple pollen tubes into one embryo sac in Arabidopsis thaliana. In jagger, an AGP4 knockout mutant, the pistils show impaired pollen tube blockage as a consequence of the survival of the persistent synergid. JAGGER seems to be involved in the signaling pathway that leads to a blockage of pollen tube attraction. Our results shed light on the mechanism responsible for preventing polyspermy in Arabidopsis and for safeguarding successful fertilization of all ovules in one pistil, ensuring seed set and the next generation.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available