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 Ethylene signaling is critical for synergid cell functional specification and pollen tube attraction

2018 ◽  
Vol 96 (1) ◽  
pp. 176-187 ◽  
Author(s):  
Cheng Zhang ◽  
Xiao-Dong Teng ◽  
Quan-Quan Zheng ◽  
Yan-Yun Zhao ◽  
Jie-Yang Lu ◽  
...  
Keyword(s):  
Pollen Tube ◽  
Ethylene Signaling ◽  
Synergid Cell ◽  
Functional Specification

scholarly journals Pollination Type Recognition from a Distance by the Ovary Is Revealed Through a Global Transcriptomic Analysis

Plants ◽  
2019 ◽  
Vol 8 (6) ◽  
pp. 185 ◽  
Author(s):  
Valentin Joly ◽  
Faïza Tebbji ◽  
André Nantel ◽  
Daniel P. Matton
Keyword(s):  
Pollen Tube ◽  
Wound Response ◽  
Transcriptomic Analysis ◽  
Solanum Chacoense ◽  
Molecular Signature ◽  
Ethylene Signaling ◽  
Wild Potato Species ◽  
Intimate Contact ◽  
Incompatible Pollination ◽  
Pollen Tube Penetration

Sexual reproduction in flowering plants involves intimate contact and continuous interactions between the growing pollen tube and the female reproductive structures. These interactions can trigger responses in distal regions of the flower well ahead of fertilization. While pollination-induced petal senescence has been studied extensively, less is known about how pollination is perceived at a distance in the ovary, and how specific this response is to various pollen genotypes. To address this question, we performed a global transcriptomic analysis in the ovary of a wild potato species, Solanum chacoense, at various time points following compatible, incompatible, and heterospecific pollinations. In all cases, pollen tube penetration in the stigma was initially perceived as a wounding aggression. Then, as the pollen tubes grew in the style, a growing number of genes became specific to each pollen genotype. Functional classification analyses revealed sharp differences in the response to compatible and heterospecific pollinations. For instance, the former induced reactive oxygen species (ROS)-related genes while the latter affected genes associated to ethylene signaling. In contrast, incompatible pollination remained more akin to a wound response. Our analysis reveals that every pollination type produces a specific molecular signature generating diversified and specific responses at a distance in the ovary in preparation for fertilization.

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.

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 modulates tomato pollen tube growth, through modifications of cell wall remodeling and calcium gradient

2021 ◽  
Author(s):  
Rasha Althiab‐Almasaud ◽  
Yi Chen ◽  
Elie Maza ◽  
Anis Djari ◽  
Pierre Frasse ◽  
...  
Keyword(s):  
Cell Wall ◽  
Pollen Tube ◽  
Pollen Tube Growth ◽  
Tube Growth ◽  
Ethylene Signaling ◽  
Calcium Gradient ◽  
Cell Wall Remodeling

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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