Pollen-specific pectin methylesterase involved in pollen tube growth

Pollen tube elongation in the pistil is a crucial step in the sexual reproduction of plants. Because the wall of the pollen tube tip is composed of a single layer of pectin and, unlike most other plant cell walls, does not contain cellulose or callose, pectin methylesterases (PMEs) likely play a cen...

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Bibliographic Details
Published in:Developmental biology 2006-06, Vol.294 (1), p.83-91
Main Authors: Tian, Guo-Wei, Chen, Min-Huei, Zaltsman, Adi, Citovsky, Vitaly
Format: Article
Language:English
Subjects:
Arabidopsis
Arabidopsis - enzymology
Arabidopsis - physiology
Arabidopsis Proteins
Carboxylic Ester Hydrolases - physiology
Flowers - cytology
Flowers - growth & development
Morphogenesis
Native PME expression
Pectin
Phylogeny
Plant Physiological Phenomena
Pollen - chemistry
Pollen grain
Pollen tube
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Summary:Pollen tube elongation in the pistil is a crucial step in the sexual reproduction of plants. Because the wall of the pollen tube tip is composed of a single layer of pectin and, unlike most other plant cell walls, does not contain cellulose or callose, pectin methylesterases (PMEs) likely play a central role in the pollen tube growth and determination of pollen tube morphology. Thus, the functional studies of pollen-specific PMEs, which are still in their infancy, are important for understanding the pollen development. We identified a new Arabidopsis pollen-specific PME, AtPPME1, characterized its native expression pattern, and used reverse genetics to demonstrate its involvement in determination of the shape of the pollen tube and the rate of its elongation.
ISSN:0012-1606
1095-564X
DOI:10.1016/j.ydbio.2006.02.026