Plastids and gravitropic sensing

@article{Sack1997PlastidsAG,
  title={Plastids and gravitropic sensing},
  author={Fred David Sack},
  journal={Planta},
  year={1997},
  volume={203},
  pages={S63-S68}
}
Data and theories about the identity of the mass that acts in gravitropic sensing are reviewed. Gravity sensing may have evolved several times in plants and algae in processes such as gravitropism of organs and tip-growing cells, gravimorphism, gravitaxis, and the regulation of cytoplasmic streaming in internodal cells of Chara. In the latter and in gravitaxis, the mass of the entire cell may function in sensing. But gravitropic sensing appears to rely upon the mass of amyloplasts that sediment… CONTINUE READING