scholarly journals Species Preferentiality of the Pollen Tube Attractant Derived from the Synergid Cell of Torenia fournieri

2006 ◽  
Vol 142 (2) ◽  
pp. 481-491 ◽  
Author(s):  
Tetsuya Higashiyama ◽  
Rie Inatsugi ◽  
Sachio Sakamoto ◽  
Narie Sasaki ◽  
Toshiyuki Mori ◽  
...  
Keyword(s):  
Pollen Tube ◽  
Torenia Fournieri ◽  
Synergid Cell

scholarly journals Acquisition of LURE-Binding Activity at the Pollen Tube Tip of Torenia fournieri

2013 ◽  
Vol 6 (4) ◽  
pp. 1074-1090 ◽  
Author(s):  
Satohiro Okuda ◽  
Takamasa Suzuki ◽  
Masahiro M. Kanaoka ◽  
Hitoshi Mori ◽  
Narie Sasaki ◽  
...  
Keyword(s):  
Pollen Tube ◽  
Binding Activity ◽  
Torenia Fournieri

scholarly journals The SEEL Motif and Members of the MYB-related REVEILLE Transcription Factor Family are Important for the Expression of LORELEI in the Synergid Cells of the Arabidopsis Female Gametophyte

2021 ◽  
Author(s):  
Jennifer A. Noble ◽  
Alex Seddon ◽  
Sahra Uygun ◽  
Steven E. Smith ◽  
Shin-Han Shiu ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Pollen Tube ◽  
Female Gametophyte ◽  
Regulatory Networks ◽  
Clock Genes ◽  
Regulatory Element ◽  
Regulatory Elements ◽  
Loss Of Function ◽  
Seed Formation ◽  
Synergid Cell

Synergid cells in the micropylar end of the female gametophyte are required for critical cell-cell signaling interactions between the pollen tube and the ovule that precede double fertilization and seed formation in flowering plants. LORELEI (LRE) encodes a GPI-anchored protein that is expressed primarily in the synergid cells, and together with FERONIA, a receptor-like kinase, it controls pollen tube reception by the receptive synergid cell. Still, how LRE expression is controlled in synergid cells remains poorly characterized. We identified candidate cis-regulatory elements enriched in LRE and other synergid cell-expressed genes. One of the candidate motifs (TAATATCT) in the LRE promoter was an uncharacterized variant of the Evening Element motif that we named as the Short Evening Element-like (SEEL) motif. Deletion or point mutations in the SEEL motif of the LRE promoter resulted in decreased reporter expression in synergid cells, demonstrating that the SEEL motif is important for expression of LRE in synergid cells. Additionally, we found that LRE expression is decreased in the loss of function mutants of REVEILLE (RVE) transcription factors, which are clock genes known to bind the SEEL and other closely related motifs. We propose that RVE transcription factors regulate LRE expression in synergid cells by binding to the SEEL motif in the LRE promoter. Identification of a cis-regulatory element and transcription factors involved in the expression of LRE will serve as a foundation to characterize the gene regulatory networks in synergid cells and investigate the potential connection between circadian rhythm and fertilization.

Pollen tube entry into the synergid cell of Arabidopsis is observed at a site distinct from the filiform apparatus

2013 ◽  
Vol 26 (2) ◽  
pp. 93-99 ◽  
Author(s):  
Yehoram Leshem ◽  
Cameron Johnson ◽  
Venkatesan Sundaresan
Keyword(s):  
Pollen Tube ◽  
Filiform Apparatus ◽  
Synergid Cell ◽  
A Site

scholarly journals Guidance in Vitro of the Pollen Tube to the Naked Embryo Sac of Torenia fournieri

1998 ◽  
Vol 10 (12) ◽  
pp. 2019-2031 ◽  
Author(s):  
Tetsuya Higashiyama ◽  
Haruko Kuroiwa ◽  
Shigeyuki Kawano ◽  
Tsuneyoshi Kuroiwa
Keyword(s):  
Pollen Tube ◽  
Embryo Sac ◽  
Torenia Fournieri

Guidance in vitro of the Pollen Tube to the Naked Embryo Sac of Torenia fournieri

1998 ◽  
Vol 10 (12) ◽  
pp. 2019 ◽  
Author(s):  
Tetsuya Higashiyama ◽  
Haruko Kuroiwa ◽  
Shigeyuki Kawano ◽  
Tsuneyoshi Kuroiwa
Keyword(s):  
Pollen Tube ◽  
Embryo Sac ◽  
Torenia Fournieri

scholarly journals MYB98 Is Required for Pollen Tube Guidance and Synergid Cell Differentiation in Arabidopsis

2005 ◽  
Vol 17 (11) ◽  
pp. 2981-2992 ◽  
Author(s):  
Ryushiro D. Kasahara ◽  
Michael F. Portereiko ◽  
Linda Sandaklie-Nikolova ◽  
David S. Rabiger ◽  
Gary N. Drews
Keyword(s):  
Cell Differentiation ◽  
Pollen Tube ◽  
Pollen Tube Guidance ◽  
Synergid Cell

scholarly journals CrRLK1L receptor-like kinases HERCULES RECEPTOR KINASE 1 and ANJEA are female determinants of pollen tube reception

2018 ◽  
Author(s):  
Sergio Galindo-Trigo ◽  
Noel Blanco-Touriñán ◽  
Thomas A. DeFalco ◽  
Eloise S. Wells ◽  
Julie E Gray ◽  
...  
Keyword(s):  
Pollen Tube ◽  
Female Gametophyte ◽  
Male Gametophyte ◽  
Oxygen Species ◽  
Receptor Kinase ◽  
In Planta ◽  
Filiform Apparatus ◽  
Synergid Cell ◽  
Receptor Kinases ◽  
Type Receptor

AbstractCommunication between the gametophytes is vital for angiosperm fertilisation. Multiple CrRLK1L-type receptor kinases prevent premature pollen tube burst, while another CrRLK1L protein, FERONIA (FER), is required for pollen tube burst in the female gametophyte. We report here the identification of two additional CrRLK1L homologues, HERCULES RECEPTOR KINASE 1 (HERK1) and ANJEA (ANJ), which act redundantly to promote pollen tube burst at the synergid cells. HERK1 and ANJ localise to the filiform apparatus of the synergid cells in unfertilised ovules, and in herk1 anj mutants a majority of ovules remain unfertilised due to pollen tube overgrowth, together indicating that HERK1 and ANJ act as female determinants for fertilisation. As in fer mutants, the synergid cell-specific, endomembrane protein NORTIA (NTA) is not relocalised after pollen tube reception; however, unlike fer mutants, reactive oxygen species levels are unaffected in herk1 anj double mutants. Both ANJ and HERK1 associate with FER and its proposed co-receptor LORELEI (LRE) in planta. Together, our data indicate that HERK1 and ANJ act with FER to mediate female-male gametophyte interactions during plant fertilisation.

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
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