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

Ultradian Growth in Prochlorococcus spp.

A Shalapyonok1, R J Olson, L S Shalapyonok

  • 1Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543.

Applied and Environmental Microbiology
|December 14, 2005
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

Bioenergetics, Trophic Ecology, and Niche Separation of Tunas.

Advances in marine biology·2016
Same author

Direct evidence for Mendelian inheritance of the variations in the ribosomal protein gene introns in yellowfin tuna (Thunnus albacares).

Marine biotechnology (New York, N.Y.)·2004
Same author

Glistenings with long-term follow-up of the Surgidev B20/20 polymethylmethacrylate intraocular lens.

American journal of ophthalmology·2001
Same author

Patient satisfaction after uneventful cataract surgery with implantation of a silicone or acrylic foldable intraocular lens. Comparative study.

Journal of cataract and refractive surgery·2001
Same author

Introduction of corneal astigmatism through placement of a scleral fixation ring in eye bank eyes.

Cornea·2001
Same author

Glistenings in the AcrySof intraocular lens: pilot study.

Journal of cataract and refractive surgery·2001
Same journal

A set of constitutive promoters with graded strengths for gene expression in diverse cyanobacterial strains.

Applied and environmental microbiology·2026
Same journal

Sources and traits of bacteria and fungi found in the near-surface atmosphere.

Applied and environmental microbiology·2026
Same journal

Advancing One Health in Africa through continental early warning environmental surveillance.

Applied and environmental microbiology·2026
Same journal

Specificity and longevity of a bacterial interspecies mutual cooperation benefiting organic micropollutant biodegradation.

Applied and environmental microbiology·2026
Same journal

Coordinated regulation of trimethylamine catabolism in abundant marine bacteria.

Applied and environmental microbiology·2026
Same journal

Synergistic and individual effects of RNase E, II, and R in the regulation of <i>Escherichia coli</i> growth and metabolism.

Applied and environmental microbiology·2026
See all related articles

The marine prokaryote Prochlorococcus shows ultradian growth, dividing more than once daily. This rapid cell division, regulated by a light-triggered timer, challenges previous assumptions about nutrient limitation in the open ocean.

Area of Science:

  • Marine microbiology
  • Cellular and molecular biology
  • Oceanography

Background:

  • Prochlorococcus is a globally abundant marine cyanobacterium.
  • Its cell division is known to be synchronized with the light-dark cycle.
  • Previous studies suggested Prochlorococcus grows at its maximum rate in the open ocean.

Purpose of the Study:

  • To investigate the growth rate and cell division patterns of Prochlorococcus.
  • To determine the regulatory mechanisms underlying Prochlorococcus cell cycle.
  • To re-evaluate nutrient limitation in Prochlorococcus populations.

Main Methods:

  • In situ measurements of Prochlorococcus populations.
  • Laboratory cultivation of Prochlorococcus under controlled conditions.

Related Experiment Videos

  • Analysis of cell cycle progression and DNA replication timing.

    • Main Results:

    • Prochlorococcus exhibited ultradian growth, exceeding one division per day.
    • A second cell division occurred shortly after the first, without overlap.
    • Cell cycle timing was independent of light intensity and duration, suggesting timer-based regulation.
    • This ultradian growth pattern was previously unobserved in prokaryotes.

    Conclusions:

    • Prochlorococcus can achieve growth rates faster than previously thought.
    • Cell cycle regulation in Prochlorococcus involves a light-triggered timer or circadian clock.
    • The findings necessitate a re-evaluation of nutrient limitation in open ocean environments.
    • This study opens new avenues for understanding prokaryotic cellular rhythms.