TY - JOUR
T1 - Rapid elimination of the persistent synergid through a cell fusion mechanism
AU - Maruyama, Daisuke
AU - Völz, Ronny
AU - Takeuchi, Hidenori
AU - Mori, Toshiyuki
AU - Igawa, Tomoko
AU - Kurihara, Daisuke
AU - Kawashima, Tomokazu
AU - Ueda, Minako
AU - Ito, Masaki
AU - Umeda, Masaaki
AU - Nishikawa, Shuh Ichi
AU - Groß-Hardt, Rita
AU - Higashiyama, Tetsuya
N1 - Publisher Copyright:
© 2015 Elsevier Inc.
PY - 2015/5/7
Y1 - 2015/5/7
N2 - In flowering plants, fertilization-dependent degeneration of the persistent synergid cell ensures one-on-one pairings of male and female gametes. Here, we report that the fusion of the persistent synergid cell and the endosperm selectively inactivates the persistent synergid cell in Arabidopsis thaliana. The synergid-endosperm fusion causes rapid dilution of pre-secreted pollen tube attractant in the persistent synergid cell and selective disorganization of the synergid nucleus during the endosperm proliferation, preventing attractions of excess number of pollen tubes (polytubey). The synergid-endosperm fusion is induced by fertilization of the central cell, while the egg cell fertilization predominantly activates ethylene signaling, an inducer of the synergid nuclear disorganization. Therefore, two female gametes (the egg and the central cell) control independent pathways yet coordinately accomplish the elimination of the persistent synergid cell by double fertilization.
AB - In flowering plants, fertilization-dependent degeneration of the persistent synergid cell ensures one-on-one pairings of male and female gametes. Here, we report that the fusion of the persistent synergid cell and the endosperm selectively inactivates the persistent synergid cell in Arabidopsis thaliana. The synergid-endosperm fusion causes rapid dilution of pre-secreted pollen tube attractant in the persistent synergid cell and selective disorganization of the synergid nucleus during the endosperm proliferation, preventing attractions of excess number of pollen tubes (polytubey). The synergid-endosperm fusion is induced by fertilization of the central cell, while the egg cell fertilization predominantly activates ethylene signaling, an inducer of the synergid nuclear disorganization. Therefore, two female gametes (the egg and the central cell) control independent pathways yet coordinately accomplish the elimination of the persistent synergid cell by double fertilization.
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U2 - 10.1016/j.cell.2015.03.018
DO - 10.1016/j.cell.2015.03.018
M3 - Article
C2 - 25913191
AN - SCOPUS:84928918990
SN - 0092-8674
VL - 161
SP - 907
EP - 918
JO - Cell
JF - Cell
IS - 4
ER -