News

Tube worm slime displays long-lasting, self-powered glow

Marine organism’s bioluminescence could inspire new eco-friendly, long-lasting light sources
Nancy D. Lamontagne
April 28, 2020

When threatened, the marine parchment tube worm secretes a sticky slime that emits a unique long-lasting blue light. New research into how the worm creates and sustains this light suggests that the process is self-powered.

“The light, or bioluminescence, produced by this worm does not appear as flashes, like in most luminous organisms, but as a long-lasting glow,” said Evelien De Meulenaere, a researcher in Dimitri Deheyn’s lab at the Scripps Institution of Oceanography. “Understanding the mechanisms of this bioluminescence process could inform the design of a light stick that works for several days or, with further optimization, environmentally friendly garden and street lighting.”

De Meulenaere was scheduled to present this research at the American Society for Biochemistry and Molecular Biology annual meeting in San Diego in April. Though the meeting, to be held in conjunction with the 2020 Experimental Biology conference, was canceled in response to the COVID-19 outbreak, the research team's abstract was published in The FASEB Journal.

Tube-worm-890x293.jpg
David Liittschwager
The photograph on the left shows the marine parchment tube worm (Chaetopterus sp.) under natural light. The worm is curled up, tucking its tail under its head. The image on the right shows the same worm but in the dark, capturing the blue light (bioluminescence) coming from the slime/mucus that is continuously produced by the worm when it feels threatened.

After discovering that light production was not linked with any of the organism’s metabolic pathways, the researchers realized that sustaining light production for more than a few milliseconds would require the slime to contain its own energy source.

Further work revealed that the worm’s slime contains an iron storage protein called ferritin. Artificially adding iron to the mucus increased light production, which led the researchers to believe that ferritin acts as like a molecular battery that stores energy. More recently, they found that exposing ferritin to blue light makes more iron available and that exposing the slime to blue light induces bursts of light lasting several minutes.

“A light source based on this mechanism could be remotely triggered using blue light to initiate and amplify the process,” De Meulenaere said. “Once we understand exactly how light production happens in the natural system, that information could potentially be used to develop a long-lasting light that is also biodegradable and rechargeable.”

The tube worm’s bioluminescence could also be used to create biomedical reporter systems. Because it is sensitive to iron such a system could be used to test for iron deficiencies or toxicities. It could also be used as a light-emitting reporter that works for several days. This would allow experiments where various proteins or cells are tracked for much longer periods of time than possible with today’s fluorescent reporters.

Enjoy reading ASBMB Today?

Become a member to receive the print edition four times a year and the digital edition monthly.

Learn more
Nancy D. Lamontagne

Nancy D. Lamontagne is a science writer and editor at Creative Science Writing based in Chapel Hill, North Carolina.

Get the latest from ASBMB Today

Enter your email address, and we’ll send you a weekly email with recent articles, interviews and more.

Latest in Science

Science highlights or most popular articles

Melissa Moore to speak at ASBMB 2025
ASBMB Annual Meeting

Melissa Moore to speak at ASBMB 2025

April 2, 2025

Richard Silverman and Melissa Moore are the featured speakers at the ASBMB annual meeting to be held April 12-15 in Chicago.

 A new kind of stem cell is revolutionizing regenerative medicine
Feature

A new kind of stem cell is revolutionizing regenerative medicine

April 1, 2025

Induced pluripotent stem cells are paving the way for personalized treatments to diabetes, vision loss and more. However, scientists still face hurdles such as strict regulations, scalability, cell longevity and immune rejection.

Engineering the future with synthetic biology
ASBMB Annual Meeting

Engineering the future with synthetic biology

March 31, 2025

Learn about the ASBMB 2025 symposium on synthetic biology, featuring applications to better human and environmental health.

Scientists find bacterial ‘Achilles’ heel’ to combat antibiotic resistance
Webinar

Scientists find bacterial ‘Achilles’ heel’ to combat antibiotic resistance

March 28, 2025

Alejandro Vila, an ASBMB Breakthroughs speaker, discussed his work on metallo-β-lactamase enzymes and their dependence on zinc.

Host vs. pathogen and the molecular arms race
ASBMB Annual Meeting

Host vs. pathogen and the molecular arms race

March 28, 2025

Learn about the ASBMB 2025 symposium on host–pathogen interactions, to be held Sunday, April 13 at 1:50 p.m.

Richard Silverman to speak at ASBMB 2025
ASBMB Annual Meeting

Richard Silverman to speak at ASBMB 2025

March 27, 2025

Richard Silverman and Melissa Moore are the featured speakers at the ASBMB annual meeting to be held April 12-15 in Chicago.