scholarly journals Roles of the Ubiquitin/Proteasome Pathway in Pollen Tube Growth with Emphasis on MG132-Induced Alterations in Ultrastructure, Cytoskeleton, and Cell Wall Components

2006 ◽  
Vol 141 (4) ◽  
pp. 1578-1590 ◽  
Author(s):  
Xianyong Sheng ◽  
Zhenghai Hu ◽  
Hongfei Lü ◽  
Xiaohua Wang ◽  
František Baluška ◽  
...  
Keyword(s):  
Cell Wall ◽  
Pollen Tube ◽  
Pollen Tube Growth ◽  
Tube Growth ◽  
Cell Wall Components ◽  
Ubiquitin Proteasome Pathway ◽  
Ubiquitin Proteasome ◽  
Proteasome Pathway ◽  
Wall Components

scholarly journals Exocyst mutants suppress pollen tube growth and cell wall structural defects of hydroxyproline O‐arabinosyltransferase mutants

2020 ◽  
Vol 103 (4) ◽  
pp. 1399-1419
Author(s):  
Steven Beuder ◽  
Alexandria Dorchak ◽  
Ashwini Bhide ◽  
Svenning Rune Moeller ◽  
Bent L. Petersen ◽  
...  
Keyword(s):  
Cell Wall ◽  
Pollen Tube ◽  
Pollen Tube Growth ◽  
Tube Growth ◽  
Structural Defects

scholarly journals To preserve or to destroy, that is the question: the role of the cell wall integrity pathway in pollen tube growth

2019 ◽  
Vol 52 ◽  
pp. 131-139 ◽  
Author(s):  
Hannes Vogler ◽  
Gorka Santos-Fernandez ◽  
Martin A Mecchia ◽  
Ueli Grossniklaus
Keyword(s):  
Cell Wall ◽  
Pollen Tube ◽  
Pollen Tube Growth ◽  
Cell Wall Integrity ◽  
Tube Growth ◽  
Cell Wall Integrity Pathway

scholarly journals Inhibition of Apoplastic Calmodulin Impairs Calcium Homeostasis and Cell Wall Modeling during Cedrus deodara Pollen Tube Growth

PLoS ONE ◽  
2013 ◽  
Vol 8 (2) ◽  
pp. e55411 ◽  
Author(s):  
Li Wang ◽  
Xueqin Lv ◽  
Hong Li ◽  
Min Zhang ◽  
Hong Wang ◽  
...  
Keyword(s):  
Cell Wall ◽  
Pollen Tube ◽  
Calcium Homeostasis ◽  
Pollen Tube Growth ◽  
Tube Growth ◽  
Cedrus Deodara

scholarly journals The haustorial synergids of Cortaderia (Gramineae) at maturity

2014 ◽  
Vol 50 (1-2) ◽  
pp. 151-160 ◽  
Author(s):  
Melva N. Philipson
Keyword(s):  
Cell Wall ◽  
Plasma Membrane ◽  
Pollen Tube ◽  
Pollen Tube Growth ◽  
Central Cell ◽  
Transfer Cell ◽  
Tube Growth ◽  
Transport Activity ◽  
Cell Cytoplasm ◽  
Cortaderia Selloana

The ultrastructure of synergids which extend through the micropyle as haustoria and lie against 'the ovary wall are described in <em>Cortaderia selloana</em> and its F<sub>l</sub> hybrid with <em>C. araucana</em>. These haustoria bear typical transfer cell wall invaginations closely associated with the plasma membrane and with mitochondria. Their function seems to be one involved in the absorption and conduction of nutrients to the synergids which are atypical in their highly vacuolate structure, degenerate nuclei and few organelles. The synergids appear to act as repositories of nutrients which are, readily accessible to the central cell by virtue of deep intrusions made into them by the central cell cytoplasm. Enzymatic secretion could also be a function of the distal end of the haustorial synergids, both in facilitating tissue peneration during its outward growth and in directing pollen tube growth. At anfhesis, the haustorium - synergid complex appears to be past its peak of absorption and transport activity, and to be involved in a seeretory or degenerative phase.

BcSKS11, a SKS gene from pollinated pistils of Chinese cabbage pak choi, is expressed continuously during the male gametophyte development, pollen germination and pollen-tube growth processes

2013 ◽  
Vol 61 (6) ◽  
pp. 446
Author(s):  
Zhixian Zhang ◽  
Jiashu Cao ◽  
Lin Qiu ◽  
Jingjing Jiang ◽  
Baohua Wu
Keyword(s):  
Cell Wall ◽  
Pollen Tube ◽  
Chinese Cabbage ◽  
Pollen Tube Growth ◽  
Pollen Germination ◽  
In Situ Hybridisation ◽  
Pollen Grains ◽  
Tube Growth ◽  
Mature Pollen ◽  
Pak Choi

Cell wall-related genes and proteins are crucial for fertilisation-related events such as pollen germination and pollen-tube growth. Recent studies have focussed on the molecular mechanism of cell-wall synthesis and regulation of these processes; however, limited information is available on the mechanism and modification of the crucial cell-wall materials. We isolated a gene that is potentially involved in cell-wall metabolism from pollinated pistils of the male sterile line ‘Bcajh97-A’ in Chinese cabbage pak choi (Brassica campestris SKewed5 Similar 11, BcSKS11). BcSKS11 has several features of SKewed5 Similar (SKS) proteins, which are structures that are similar to plant multicopper oxidase but lack the 10 necessary residues of two copper-binding sites. A phylogenetic tree constructed from 49 SKS proteins found four clades, with BcSKS11 being in a clade with tobacco sequences. Reverse transcription–polymerase chain reaction and in situ hybridisation revealed that BcSKS11 was specifically expressed in uninucleate microspores, mature pollen grains and growing pollen tubes of pollinated pistils. These results suggest that BcSKS11 might be stored in mature pollen grains, in preparation for pollen germination and pollen-tube growth.

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