Fertilization in Higher Plants

pp 283-302

The Rheological Properties of the Pollen Tube Cell Wall

  • A. GeitmannAffiliated withPCM, Wageningen Agricultural University

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Pollen tubes are very fast, polarly growing cells which produce a high amount of cell wall. The architecture of the pollen tube cell wall, its formation and rheological properties are discussed with regard to plant cell growth. The phenomenon of pulsating pollen tubes which show hoop-shaped depositions of pectin along their longitudinal axis represents a particular model for the investigation of plant cell growth since the equilibrium between cell wall force and internal turgor must be extremely well controlled in these cells. The putative biological function of this unique mode of growth is discussed.