Back Preprofase Spanish Rana profaza Croatian Препрофаза Russian 早前期 Chinese

Preprophase

Microtubule dynamics during preprophase and prophase in plant cell mitosis, modified from Donukshe et al.[1] The images follow a tobacco BY-2 cell through the first stages of mitosis (c. 12 minutes). The growing ends of microtubules are shown in green (labeled with green fluorescent protein fused to the microtubule plus end binding protein EB1 of Arabidopsis thaliana). N = Nucleus, V = Vacuole, PPB = Preprophase band, MTN = Microtubule nucleation starts at the nuclear envelope, NEB = Nuclear envelope breakdown at the onset of prometaphase. Also see the movie corresponding to this figure.

Preprophase is an additional phase during mitosis in plant cells that does not occur in other eukaryotes such as animals or fungi. It precedes prophase and is characterized by two distinct events:

  1. The formation of the preprophase band, a dense microtubule ring underneath the plasma membrane.
  2. The initiation of microtubule nucleation at the nuclear envelope.
  1. ^ Dhonukshe, P, Mathur, J, Hülskamp, M, Gadella, TWJ (2005). "Microtubule plus-ends reveal essential links between intracellular polarization and localized modulation of endocytosis during division-plane establishment in plant cells". BMC Biology. 3: 11. doi:10.1186/1741-7007-3-11. PMC 1087477. PMID 15831100.{{cite journal}}: CS1 maint: multiple names: authors list (link)

Rich TVX News Network Site

Rich TVX News Network Info

© MMXXIII Rich X Search. We shall prevail. All rights reserved. Rich X Search