Jove
Visualize
Contact Us

Related Experiment Videos

Springback in root gravitropism.

A C Leopold1, S H Wettlaufer

  • 1Boyce Thompson Institute, Cornell University, Ithaca, New York 14853.

Plant Physiology
|January 1, 1989
PubMed
Summary
This summary is machine-generated.

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

Correlative aging and transport of P(32) in corn leaves under the influence of kinetin.

Planta·2014
Same author

The mechanism of kinetin-induced transport in corn leaves.

Planta·2014
Same author

The specificity of the auxin transport system.

Planta·2014
Same author

Geotropism and the lateral transport of auxin in the corn mutant amylomaize.

Planta·2014
Same author

In-vitro binding of morphactins and 1-N-naphthylphthalamic acid in corn coleoptiles and their effects on auxin transport.

Planta·2014
Same author

Membrane organization in soybean seeds during hydration.

Planta·2013
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

Corn roots exhibit "springback," a rapid loss of gravitropic curvature after gravistimulus removal. This phenomenon is independent of the root cap and auxin transport, suggesting a memory-based response.

Area of Science:

  • Plant biology
  • Plant physiology
  • Developmental biology

Background:

  • Gravitropism is a crucial plant growth response to gravity.
  • Understanding the mechanisms underlying gravitropism is essential for plant science.
  • Corn roots (Zea mays L.) are a model system for studying gravitropism.

Purpose of the Study:

  • To investigate the phenomenon of "springback" in corn roots.
  • To determine the factors influencing the loss of gravitropic curvature after gravistimulus removal.
  • To elucidate the underlying mechanisms of this rapid curvature change.

Main Methods:

  • Gravistimulation and withdrawal experiments on Merit corn roots.
  • Observation of root curvature changes over time.
  • Testing the effects of root cap presence/absence.
Keywords:
NASA Discipline Number 29-20NASA Discipline Plant BiologyNASA Program Space BiologyNon-NASA Center

Related Experiment Videos

  • Assessing the impact of auxin transport inhibitors and added auxin.
  • Utilizing clinostat treatment to neutralize gravistimulation.

    • Main Results:

    • Gravitropic curvature is rapidly lost (1-10 minutes) after gravistimulus withdrawal, termed "springback."
    • Springback occurs irrespective of the root cap's presence or absence.
    • The phenomenon is insensitive to auxin transport inhibitors (e.g., 2,3,5-triiodobenzoic acid) and exogenous auxin (2,4-dichlorophenoxyacetic acid).
    • Clinostat treatment during germination prevents springback, indicating a role for prior gravistimulation.

    Conclusions:

    • Springback in corn roots is a rapid response to the withdrawal of gravistimulus.
    • The mechanism is not directly mediated by auxin transport or the root cap.
    • The prevention of springback by clinostat treatment suggests a "memory" effect from prior gravistimulation.