Implications of ionizing radiation on pollen performance in comparison with diverse models of polar cell growth

2020 ◽  
Author(s):  
Octavian O. H. Stephan
Keyword(s):  
Cell Growth ◽  
Ionizing Radiation ◽  
Polar Cell ◽  
Pollen Performance

p21 is a critical suppressor of mesenchymal stem cell growth and differentiation after ionizing radiation

2008 ◽  
Vol 207 (3) ◽  
pp. S63
Author(s):  
Marc A. Soares ◽  
John G. Fernandez ◽  
Björn H. Schönmeyr ◽  
Nicholas W. Clavin ◽  
Babak J. Mehrara
Keyword(s):  
Stem Cell ◽  
Cell Growth ◽  
Mesenchymal Stem Cell ◽  
Ionizing Radiation ◽  
Cell Growth And Differentiation

RAC/ROP GTPases in the Regulation of Polarity and Polar Cell Growth

2009 ◽  
pp. 105-122 ◽  
Author(s):  
Hen-ming Wu ◽  
Christine Y. Chen ◽  
Qiaohong Duan ◽  
Daniel Kita ◽  
Candida Nibau ◽  
...  
Keyword(s):  
Cell Growth ◽  
Polar Cell

scholarly journals RISAP Is a TGN-Associated RAC5 Effector Regulating Membrane Traffic during Polar Cell Growth in Tobacco

2014 ◽  
Vol 26 (11) ◽  
pp. 4426-4447 ◽  
Author(s):  
Octavian Stephan ◽  
Stephanie Cottier ◽  
Sara Fahlén ◽  
Adriana Montes-Rodriguez ◽  
Jia Sun ◽  
...  
Keyword(s):  
Cell Growth ◽  
Membrane Traffic ◽  
Polar Cell

Polar Cell Growth and the Cytoskeleton Biology

2018 ◽  
pp. 1-50
Author(s):  
Patrick J. Hussey ◽  
Michael J. Deeks ◽  
Timothy J. Hawkins ◽  
Tijs Ketelaar
Keyword(s):  
Cell Growth ◽  
Polar Cell

scholarly journals Rho GTPase ROP1 Interactome Analysis Reveals Novel ROP1-Associated Pathways for Pollen Tube Polar Growth in Arabidopsis

2020 ◽  
Vol 21 (19) ◽  
pp. 7033
Author(s):  
Hui Li ◽  
Jinbo Hu ◽  
Jing Pang ◽  
Liangtao Zhao ◽  
Bing Yang ◽  
...  
Keyword(s):  
Cell Growth ◽  
Pollen Tube ◽  
Rho Gtpase ◽  
Ion Homeostasis ◽  
Pollen Tubes ◽  
Polar Growth ◽  
Cell Wall Modification ◽  
Polar Cell ◽  
Associated Proteins ◽  
Arabidopsis Pollen

ROP (Rho-like GTPases from plants) GTPases are polarly localized key regulators of polar growth in pollen tubes and other cells in plants. However, how ROP GTPases are regulated and how they control polar growth remains to be fully understood. To gain new insights into ROP-dependent mechanisms underlying polar cell growth, we characterized the interactome of ROP1 GTPase that controls Arabidopsis pollen tube (PT) tip growth, an extreme form of polar cell growth. We established an efficient method for culturing Arabidopsis pollen tubes in liquid medium, which was used for immunoprecipitation/mass spectrometry-based identification of ROP1-associated proteins. A total of 654 candidates were isolated from the ROP1 interactome in Arabidopsis pollen tubes, and GO (Gene Ontology) classification and pathway analysis revealed multiple uncharacterized ROP1-dependent processes including translation, cell wall modification, post transcriptional modification, and ion homeostasis, in addition to known ROP1-dependent pathways. The ROP1-interactome data was further supported by the co-expression of the candidate interactors in highly mature pollen with PT germination and growth defects being discovered in 25% (8/32) of the candidate mutant genes. Taken together, our work uncovers valuable information for the identification and functional elucidation of ROP-associated proteins in the regulation of polar growth, and provides a reliable reference to identify critical regulators of polar cell growth in the future.

scholarly journals Actin fringes of polar cell growth

2017 ◽  
Vol 68 (13) ◽  
pp. 3303-3320 ◽  
Author(s):  
Octavian O H Stephan
Keyword(s):  
Cell Growth ◽  
Polar Cell
Sign in / Sign up

Export Citation Format

Share Document