scholarly journals Pollen Tube Discharge Completes the Process of Synergid Degeneration That Is Initiated by Pollen Tube-Synergid Interaction in Arabidopsis

2015 ◽  
Vol 169 (1) ◽  
pp. 485-496 ◽  
Author(s):  
Alexander R. Leydon ◽  
Tatsuya Tsukamoto ◽  
Damayanthi Dunatunga ◽  
Yuan Qin ◽  
Mark A. Johnson ◽  
...  
Keyword(s):  
Pollen Tube ◽  
Synergid Degeneration

scholarly journals Ethylene Signaling Is Required for Synergid Degeneration and the Establishment of a Pollen Tube Block

2013 ◽  
Vol 25 (3) ◽  
pp. 310-316 ◽  
Author(s):  
Ronny Völz ◽  
Juliane Heydlauff ◽  
Dagmar Ripper ◽  
Ludwig von Lyncker ◽  
Rita Groß-Hardt
Keyword(s):  
Pollen Tube ◽  
Ethylene Signaling ◽  
Synergid Degeneration

Ultrastructure of the micropyle and its relationship to pollen tube growth and synergid degeneration in sunflower

1991 ◽  
Vol 4 (3) ◽  
Author(s):  
Hua Yan ◽  
Hong-yuan Yang ◽  
WilliamA. Jensen
Keyword(s):  
Pollen Tube ◽  
Pollen Tube Growth ◽  
Tube Growth ◽  
Synergid Degeneration

scholarly journals AP1G mediates vacuolar acidification during synergid-controlled pollen tube reception

2017 ◽  
Vol 114 (24) ◽  
pp. E4877-E4883 ◽  
Author(s):  
Jia-Gang Wang ◽  
Chong Feng ◽  
Hai-Hong Liu ◽  
Qiang-Nan Feng ◽  
Sha Li ◽  
...  
Keyword(s):  
Pollen Tube ◽  
Genetic Interaction ◽  
Adaptor Protein ◽  
Pollen Tubes ◽  
Female Sterility ◽  
Loss Of Function ◽  
Distinct Cell ◽  
Vacuolar Acidification ◽  
Shared Component ◽  
Synergid Degeneration

Double fertilization in angiosperms requires the delivery of immotile sperm through pollen tubes, which enter embryo sacs to initiate synergid degeneration and to discharge. This fascinating process, called pollen tube reception, involves extensive communications between pollen tubes and synergids, within which few intracellular regulators involved have been revealed. Here, we report that vacuolar acidification in synergids mediated by AP1G and V-ATPases might be critical for pollen tube reception. Functional loss of AP1G or VHA-A, encoding the γ subunit of adaptor protein 1 or the shared component of two endomembrane V-ATPases, respectively, impaired synergid-controlled pollen tube reception and caused partial female sterility. AP1G works in parallel to the plasma membrane-associated receptor FERONIA in synergids, suggesting that synergid-mediated pollen tube reception requires proper sorting of vacuolar cargos by AP1G. Although AP1G did not mediate the targeting of V-ATPases, AP1G loss of function or the expression of AP1G-RNAi compromised vacuolar acidification mediated by V-ATPases, implying their genetic interaction. We propose that vacuolar acidification might represent a distinct cell-death mechanism specifically adopted by the plant phylum, which is critical for synergid degeneration during pollen tube reception.

Inhibition of Pollen Tube Growth by Diffusate and Extract of Grape Pistils

1989 ◽  
Vol 58 (3) ◽  
pp. 515-521 ◽  
Author(s):  
Goro OKAMOTO ◽  
Ikuo SHIBUYA ◽  
Miwa FURUICHI ◽  
Kazuo SHIMAMURA
Keyword(s):  
Pollen Tube ◽  
Pollen Tube Growth ◽  
Tube Growth
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