Calcium and the photopolarization ofPelvetia zygotes

  title={Calcium and the photopolarization ofPelvetia zygotes},
  author={Kenneth R. Robinson},
The initially apolar zygotes of the brown algae,Fucus andPelvetia, form their main axes during the hours following fertilization and each cell expresses its axis by germinating at one location. The germinating region is destined to become the rhizoid and the rest of the zygote gives rise to the thallus. In response to unilateral blue light, the zygotes organize their developmental axes so that the rhizoids emerge on the shaded side, away from the light source. In the research reported here, the… CONTINUE READING