scholarly journals Type B Phosphatidylinositol-4-Phosphate 5-Kinases Mediate Arabidopsis and Nicotiana tabacum Pollen Tube Growth by Regulating Apical Pectin Secretion

2008 ◽  
Vol 20 (12) ◽  
pp. 3312-3330 ◽  
Author(s):  
Till Ischebeck ◽  
Irene Stenzel ◽  
Ingo Heilmann
Keyword(s):  
Nicotiana Tabacum ◽  
Pollen Tube ◽  
Pollen Tube Growth ◽  
Tube Growth ◽  
Type B ◽  
Phosphatidylinositol 4

Ethylene response to pollen tube growth in Nicotiana tabacum flowers

Planta ◽  
2002 ◽  
Vol 214 (5) ◽  
pp. 806-812 ◽  
Author(s):  
D. De Martinis ◽  
Cotti G. ◽  
S. te Lintel Hekker ◽  
Harren F. ◽  
Mariani C.
Keyword(s):  
Nicotiana Tabacum ◽  
Pollen Tube ◽  
Pollen Tube Growth ◽  
Tube Growth ◽  
Ethylene Response

scholarly journals Rac Homologues and Compartmentalized Phosphatidylinositol 4, 5-Bisphosphate Act in a Common Pathway to Regulate Polar Pollen Tube Growth

1999 ◽  
Vol 145 (2) ◽  
pp. 317-330 ◽  
Author(s):  
Benedikt Kost ◽  
Emmanuel Lemichez ◽  
Pius Spielhofer ◽  
Yan Hong ◽  
Kimberly Tolias ◽  
...  
Keyword(s):  
Pollen Tube ◽  
Pollen Tube Growth ◽  
Intracellular Localization ◽  
Small Gtpases ◽  
Tube Growth ◽  
Yeast Cells ◽  
Common Pathway ◽  
Pollen Tube Elongation ◽  
Rho Family ◽  
Phosphatidylinositol 4

Pollen tube cells elongate based on actin- dependent targeted secretion at the tip. Rho family small GTPases have been implicated in the regulation of related processes in animal and yeast cells. We have functionally characterized Rac type Rho family proteins that are expressed in growing pollen tubes. Expression of dominant negative Rac inhibited pollen tube elongation, whereas expression of constitutive active Rac induced depolarized growth. Pollen tube Rac was found to accumulate at the tip plasma membrane and to physically associate with a phosphatidylinositol monophosphate kinase (PtdIns P-K) activity. Phosphatidylinositol 4, 5-bisphosphate (PtdIns 4, 5-P2), the product of PtdIns P-Ks, showed a similar intracellular localization as Rac. Expression of the pleckstrin homology (PH)-domain of phospholipase C (PLC)-δ1, which binds specifically to PtdIns 4, 5-P2, inhibited pollen tube elongation. These results indicate that Rac and PtdIns 4, 5-P2 act in a common pathway to control polar pollen tube growth and provide direct evidence for a function of PtdIns 4, 5-P2 compartmentalization in the regulation of this process.

Ni2+ effects on Nicotiana tabacum L. pollen germination and pollen tube growth

BioMetals ◽  
2012 ◽  
Vol 25 (6) ◽  
pp. 1221-1233 ◽  
Author(s):  
Maria Breygina ◽  
Natalie Matveyeva ◽  
Svetlana Polevova ◽  
Natalie Meychik ◽  
Yulia Nikolaeva ◽  
...  
Keyword(s):  
Nicotiana Tabacum ◽  
Pollen Tube ◽  
Pollen Tube Growth ◽  
Pollen Germination ◽  
Tube Growth ◽  
Nicotiana Tabacum L

scholarly journals Arabidopsis Type B Monogalactosyldiacylglycerol Synthase Genes Are Expressed during Pollen Tube Growth and Induced by Phosphate Starvation

2004 ◽  
Vol 134 (2) ◽  
pp. 640-648 ◽  
Author(s):  
Koichi Kobayashi ◽  
Koichiro Awai ◽  
Ken-ichiro Takamiya ◽  
Hiroyuki Ohta
Keyword(s):  
Pollen Tube ◽  
Pollen Tube Growth ◽  
Phosphate Starvation ◽  
Tube Growth ◽  
Type B

Silencing of the Pollen Gene NTP303 Ceases Pollen Tube Growth in Vivo in Nicotiana tabacum

2003 ◽  
pp. 243-245
Author(s):  
George J. Wullems ◽  
Peter F. M. de Groot ◽  
Mark de Been ◽  
M. M. A. van Herpen
Keyword(s):  
Nicotiana Tabacum ◽  
Pollen Tube ◽  
Pollen Tube Growth ◽  
Tube Growth
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