Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Gravisensing: ionic responses, cytoskeleton and amyloplast behavior.

N Strömgren Allen1, P Chattaraj, D Collings

  • 1Department of Botany, North Carolina State University, Raleigh, NC 27695-7612, USA. nina_allen@ncsu.edu

Advances in Space Research : the Official Journal of the Committee on Space Research (COSPAR)
|March 16, 2004
PubMed
Summary

Plants perceive gravity using specialized cells containing amyloplasts. This study investigates how these amyloplasts interact with cellular structures and how calcium ion (Ca2+) fluxes are involved in the gravity response in moss filaments.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Correction: Current insights on the genetics and mechanisms of MSX1-associated cleft palate.

Frontiers in dental medicine·2025
Same author

Current insights on the genetics and mechanisms of MSX1-associated cleft palate.

Frontiers in dental medicine·2025
Same author

Transport of basic amino acids in Riccia fluitans: Evidence for a second binding site.

Planta·2013
Same author

Implications for cytoplasmic pH, protonmotice force, and amino-acid transport across the plasmalemma of Riccia fluitans.

Planta·2013
Same author

Red light-induced membrane potential transients in the moss Physcomitrella patens: ion channel interaction in phytochrome signalling.

Journal of experimental botany·2011
Same author

Identification of a novel plant-specific kinesin-like protein that is highly expressed in interphase tobacco BY-2 cells.

Protoplasma·2001

Area of Science:

  • Plant biology
  • Cell biology
  • Biophysics

Background:

  • Plants sense gravity via pulvinal tissue and amyloplasts in Zea mays.
  • The mechanism of gravity signal transduction remains largely unknown.
  • Cytoskeletal elements are hypothesized to link amyloplasts to cellular responses.

Purpose of the Study:

  • To investigate amyloplast movement and its role in gravity perception.
  • To explore the effects of actin and microtubule inhibitors on plastid sedimentation.
  • To analyze calcium ion (Ca2+) influx patterns during gravistimulation in Physcomitrella patens.

Main Methods:

  • Monitoring amyloplast movements in response to gravistimulation.
  • Pharmacological disruption of actin and microtubule dynamics.
Keywords:
NASA Discipline Plant BiologyNASA Program Fundamental Space BiologyNon-NASA Center

Related Experiment Videos

  • Measuring Ca2+ influx using Ca2+ selective ion probes in moss filaments.

    • Main Results:

    • Amyloplasts sediment in response to gravity changes, potentially interacting with cellular membranes via the cytoskeleton.
    • Microtubule (MT) accumulation was observed on the lower flank of gravistimulated moss filaments.
    • Ca2+ influx in moss filaments shifted from the apex to the upper side upon gravistimulation, indicating asymmetric channel activation.

    Conclusions:

    • Amyloplasts play a role in gravity perception, with potential involvement of the cytoskeleton in signal transduction.
    • Gravistimulation induces asymmetric Ca2+ distribution in moss filaments, suggesting differential plasma membrane channel activity.