Photopolarization of Fucus zygotes is determined by time sensitive vectorial addition of environmental cues during axis amplification.

ABSTRACT: Fucoid zygotes have been extensively used to study cell polarization and asymmetrical cell division. Fertilized eggs are responsive to different environmental cues (e.g., light, gravity) for a long period before the polarity is fixed and the cells germinate accordingly. First, it is commonly believed that the direction and sense of the polarization vector are established simultaneously as indicated by the formation of an F-actin patch. Secondly, upon reorientation of the zygote, a new polar gradient is formed and it is assumed that the position of the future rhizoid pole is only influenced by the latter. Here we tested these two hypotheses investigating photopolarization in Fucus zygotes by reorienting zygotes 90° relative to a unilateral light source at different time points during the fi

SUBMITTER: Bogaert KA 

PROVIDER: S-EPMC4315017 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature