Whither chemotropism and pollen tube guidance?

  title={Whither chemotropism and pollen tube guidance?},
  journal={Trends in plant science},
  volume={4 10},
  • Lush
  • Published 1999 in Trends in plant science
Pollen tubes follow a well-defined path to deliver male gametes to female gametes, but the mechanisms they use to locate this path are poorly understood. The major hypothesis is (and long has been) that pollen tubes are guided by chemical gradients and/or physical structures. Recently, parallels have been drawn between chemical mechanisms of guidance in pollen tubes and other cells, such as axons. These comparisons highlight a problem with the current models for pollen tube guidance, namely the… CONTINUE READING

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