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

Abscisic Acid and stomatal regulation.

P E Kriedemann1, B R Loveys, G L Fuller

  • 1Department of Horticulture, Purdue University, Lafayette, Indiana 47907.

Plant Physiology
|May 1, 1972
PubMed
Summary

Abscisic acid rapidly closes plant stomata, a key process in water regulation. This hormone

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

Stomatal closure fully accounts for the inhibition of photosynthesis by abscisic acid.

The New phytologist·2021
Same author

DIURNAL CHANGES IN THE PHOTOSYNTHESIS OF FIELD-GROWN GRAPE VINES.

The New phytologist·2021
Same author

Salinity effects on the stomatal behaviour of grapevine.

The New phytologist·2021
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

Sugar uptake by the grape berry: A note on the absorption pathway.

Planta·2014

Area of Science:

  • Plant Physiology
  • Hormonal Regulation
  • Plant Water Relations

Background:

  • Stomata regulate gas exchange and water loss in plants.
  • Abscisic acid (ABA) is a plant hormone involved in stress responses.
  • Understanding ABA's role in stomatal control is crucial for plant survival.

Purpose of the Study:

  • To investigate the speed and concentration-dependency of stomatal closure induced by abscisic acid.
  • To compare the efficacy of different forms of abscisic acid in causing stomatal closure.
  • To explore the relationship between endogenous ABA levels and ABA-induced stomatal responses.

Main Methods:

  • Measurement of leaf CO(2) and H(2)O exchange rates.
  • Application of abscisic acid to detached leaves of various plant species.
  • Quantification of ABA concentrations required for stomatal closure.
  • Comparison of the activity of (+)-ABA, racemic ABA, methyl ester of ABA, and trans-ABA.

Main Results:

  • Stomatal closure onset varied by species, from 3 minutes (corn) to 32 minutes (rose).
  • Rapid closure was observed with low picomolar concentrations of ABA (8.9 pmol/cm(2) in bean).
  • (+)-Abscisic acid was twice as active as racemic ABA; methyl ester and trans-ABA were inactive.

Conclusions:

  • Abscisic acid is a potent and rapid regulator of stomatal closure.
  • The timing and sensitivity to ABA correlate with endogenous ABA levels.
  • ABA's ability to induce rapid stomatal closure suggests a primary role in plant water management and stress response.

Related Experiment Videos