Featured Research

from universities, journals, and other organizations

Global warming’s impact may be detected in genes, suggests study of how seagrasses react to heat waves

Date:
November 16, 2011
Source:
Leibniz Institute of Marine Sciences (IFM-GEOMAR)
Summary:
Seagrass populations thrive in the shallow coastal regions and offer an ideal habitat for many fish, crustacean and microbes. The worldwide decline of seagrass populations in recent years is therefore of major concern. Researchers believe that climate change plays an important role as the increase in extreme events such as heat waves is a major challenge for the seagrass. How exactly the seagrass species are impacted by extreme events is examined in a new study.

Divers transplant seegrass during a field experiment in the Kiel Bay.
Credit: T. Reusch, IFM-GEOMAR

Seagrass populations thrive in the shallow coastal regions and offer an ideal habitat for many fish, crustacean and microbes. The worldwide decline of seagrass populations in recent years is therefore of major concern to science and to nature conservation. Researchers believe that climate change plays an important role as the increase in extreme events such as heat waves is a major challenge for the seagrass. How exactly the seagrass species are impacted by extreme events is examined by scientists from the Kiel University, the University of Mόnster and the Leibniz Institute of Marine Sciences (IFM-GEOMAR) in a study recently published in the Proceeding of the National Academy of Sciences.

Scientists led by Professor Dr. Thorsten Reusch from the IFM-GEOMAR are tackling the questions if heat waves have an effect on the genetic of the widespread seagrass species Zostera marina (eelgrass).

"In the Mediterranean grasses can resist higher temperatures then in Northern Europe. Here the sea grass populations are endangered by the occurrence of heat waves with temperatures over 25 degrees in the summer," Reusch says, explaining the background of the research project. The adaptability to heat seems to have a genetic basis which is the main interest of the scientists involved in the project.

For the analysis the PhD candidates Susanne Franssen and Nina Bergmann collected sea grasses from different locations in Northern and Southern Europe and exposed them to controlled heat waves in a special test site, the AQUATRON, in the laboratory. Afterwards the scientists analysed the activity of almost all genes of the plants.

Regardless of their origin, plants showed activation of genes known to buffer heat stress. Only after the heat wave, the southern European plants proved to be resilient, going back to their normal gene activity immediately after the heat wave. The northern European plants, however, showed signs of irreversible protein damage. Apparently, the critical process whether or not a plant continues to grow or eventually dies occurs during the recovery period after the acute heat wave. To predict the adaptability of organisms to extreme events, such as heat waves, the examination of gene expression during the recovery period seems to be the better parameter.

"These results raise further questions. For example, we are now particularly interested in the ability of particular genotypes within the northern populations to also have the ability to regulate their gene activity back to the normal levels. If this was true our populations in the North and the Baltic Sea would be able to adapt to climate change," says Reusch.


Story Source:

The above story is based on materials provided by Leibniz Institute of Marine Sciences (IFM-GEOMAR). Note: Materials may be edited for content and length.


Journal Reference:

  1. S. U. Franssen, J. Gu, N. Bergmann, G. Winters, U. C. Klostermeier, P. Rosenstiel, E. Bornberg-Bauer, T. B. H. Reusch. Transcriptomic resilience to global warming in the seagrass Zostera marina, a marine foundation species. Proceedings of the National Academy of Sciences, 2011; DOI: 10.1073/pnas.1107680108

Cite This Page:

Leibniz Institute of Marine Sciences (IFM-GEOMAR). "Global warming’s impact may be detected in genes, suggests study of how seagrasses react to heat waves." ScienceDaily. ScienceDaily, 16 November 2011. <www.sciencedaily.com/releases/2011/11/111116062148.htm>.
Leibniz Institute of Marine Sciences (IFM-GEOMAR). (2011, November 16). Global warming’s impact may be detected in genes, suggests study of how seagrasses react to heat waves. ScienceDaily. Retrieved July 25, 2014 from www.sciencedaily.com/releases/2011/11/111116062148.htm
Leibniz Institute of Marine Sciences (IFM-GEOMAR). "Global warming’s impact may be detected in genes, suggests study of how seagrasses react to heat waves." ScienceDaily. www.sciencedaily.com/releases/2011/11/111116062148.htm (accessed July 25, 2014).

Share This




More Earth & Climate News

Friday, July 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Goma Cheese Brings Whiff of New Hope to DRC

Goma Cheese Brings Whiff of New Hope to DRC

Reuters - Business Video Online (July 24, 2014) — The eastern region of the Democratic Republic of Congo, mainly known for conflict and instability, is an unlikely place for the production of fine cheese. But a farm in the village of Masisi, in North Kivu is slowly transforming perceptions of the area. Known simply as Goma cheese, the Congolese version of Dutch gouda has gained popularity through out the region. Ciara Sutton reports. Video provided by Reuters
Powered by NewsLook.com
Bill Gates: Health, Agriculture Key to Africa's Development

Bill Gates: Health, Agriculture Key to Africa's Development

AFP (July 24, 2014) — Health and agriculture development are key if African countries are to overcome poverty and grow, US software billionaire Bill Gates said Thursday, as he received an honourary degree in Ethiopia. Duration: 00:36 Video provided by AFP
Powered by NewsLook.com
Higgins Breaks Record at Mt. Washington

Higgins Breaks Record at Mt. Washington

Driving Sports (July 24, 2014) — Subaru Rally Team USA drivers David Higgins and Travis Pastrana face off against a global contingent of racers at the annual Mt. Washington Hillclimb in New Hampshire. Includes exclusive in-car footage from Higgins' record attempt. Video provided by Driving Sports
Powered by NewsLook.com
Storm Kills Three, Injures 20 at Virginia Campground

Storm Kills Three, Injures 20 at Virginia Campground

Reuters - US Online Video (July 24, 2014) — A likely tornado tears through an eastern Virginia campground, killing three and injuring at least 20. Linda So reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

    Health News

      Environment News

        Technology News



          Save/Print:
          Share:  

          Free Subscriptions


          Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

          Get Social & Mobile


          Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

          Have Feedback?


          Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
          Mobile iPhone Android Web
          Follow Facebook Twitter Google+
          Subscribe RSS Feeds Email Newsletters
          Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins