JAGGER, an AGP essential for persistent synergid degeneration and polytubey block in Arabidopsis

A precise control of sperm cells delivery and fusion to the egg cell and the central cell is fundamental for the accomplishment of successful double fertilization in flowering plants. This is mostly regulated by female gametophyte egg and central cells, which control the timing of synergids cell deg...

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Bibliographic Details
Published in:Plant signaling & behavior 2016-08, Vol.11 (8), p.e1209616-e1209616
Main Authors: Pereira, Ana Marta, Lopes, Ana Lúcia, Coimbra, Sílvia
Format: Article
Language:English
Subjects:
Addendum
AGP4
Arabidopsis
Arabidopsis - metabolism
Arabidopsis - physiology
Arabidopsis Proteins - genetics
Arabidopsis Proteins - metabolism
arabinogalactan proteins
eggs
embryo sac
females
fertilization
gametophytes
Mucoproteins - genetics
Mucoproteins - metabolism
mutants
ova
Plant Proteins - genetics
Plant Proteins - metabolism
Pollen Tube - physiology
pollen tubes
Pollination - genetics
Pollination - physiology
polyspermy block
polytubey
signaling
spermatozoa
synergid degeneration
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Summary:A precise control of sperm cells delivery and fusion to the egg cell and the central cell is fundamental for the accomplishment of successful double fertilization in flowering plants. This is mostly regulated by female gametophyte egg and central cells, which control the timing of synergids cell degeneration. We recently identified an arabinogalactan protein, AGP4, named JAGGER, that impairs the persistent synergid degeneration, and consequently leads to the attraction of more than one pollen tube into one embryo sac, a situation termed polytubey. jagger mutants revealed an increased rate of polytubey and persistent synergids that do not degenerate. This persistent synergid, is, as we suggested, the cell responsible for attracting an extra pollen tube into the embryo sacs.
ISSN:1559-2316
1559-2324
1559-2324
DOI:10.1080/15592324.2016.1209616