title: Travelling in style: the cell biology of pollen.
abstract: Pollen grains of flowering plants are highly specialized two- to three-cell gametophytes that deliver sperm to the ovule. This function is achieved as a result of a complex developmental programme, including the coordinated events of meiotic divisions, the production of a unique extracellular matrix, the establishment of cytoplasmic domains, and a determinative asymmetric cell division. After maturation, pollen must interact specifically with the receptive female tissues and germinate a highly polarized pollen tube that rapidly grows through the style to the ovule. Thus, pollen is an excellent model system for the study of meiotic events, cellular organization, cell-cell interactions and polar growth in plant biology.
authors.affiliation: Biology Department, University of North Carolina, Chapel Hill, NC 27399-3280, USA.
authors.forename: P A
authors.initials: PA
authors.lastname: Bedinger
authors.forename: K J
authors.initials: KJ
authors.lastname: Hardeman
authors.forename: C A
authors.initials: CA
authors.lastname: Loukides