Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

More carbohydrates make trees more resistant to drought

30.06.2014

How well tropical trees weather periods of drought depends on the carbohydrates stored, as revealed by a novel experiment conducted by an international team of researchers headed by ecologists from the University of Zurich in contribution to the University Research Priority Program on “Global Change and Biodiversity”. The findings are extremely important for assessing the resistance of tropical forests to climate change and reforestation.

Water is the limiting factor for many plants and trees. Consequently, there are grave concerns that the rainfall patterns altered by climate change could trigger a forest decline on a global scale. According to climate researchers, Switzerland is also affected:


Malula Field Station in Malaysia: The experiments are conducted under controlled conditions in the large, black cubes. Michael O'Brien/UZH


The Danum River in Sabah, Malaysia, Borneo. The colorful trees are currently in bloom. The blossoming of tropical trees is often triggered by periods of drought. Michael O'Brien/UZH

The climate models even project hotter and drier summers for this country. An international research team headed by Michael O’Brien, an ecologist at the University of Zurich, is now studying which factors govern the resistance of tropical trees to periods of drought. As the scientists reveal in their study published in Nature Climate Change, stored carbohydrates play a key role in the resilience of the individual plant.

1,400 saplings of ten species monitored

While stored starch and soluble sugar in plant tissues were thought to influence the resistance and resilience of trees positively during periods of drought, this supposition had not been proven. O’Brien and his team planted 1,400 saplings of ten different tropical tree species in Malaysia and devised a novel experiment to manipulate the carbohydrates stored and observe their reaction.

The researchers increased or decreased the concentration of stored carbohydrates and exposed the seedlings to an artificial drought period. It became clear that young trees with more stored carbohydrates were able to maintain the vital water content in the stem for longer than those with fewer stored carbohydrates. “The better drought resistance and thus the greater chance of surviving a period of drought evidently depends on the quantity of carbohydrates stored,” concludes O’Brien.

Carbohydrate content different in every tree species

According to the scientists, the ability to store carbohydrates varies both within and between species: “As different trees display a different mortality due to aridity, the impact of a forest decline triggered by climate change is cushioned,” O’Brien is convinced. These new insights are also significant for reforestation: The planting of species that store more carbohydrates can be favored to boost the forests’ resistance to the drier climates predicted by the climate change models.

Literature:

Michael J. O’Brien, Sebastian Leuzinger, Christopher D. Philipson, John Tay and Andy Hector, Drought survival of tropical tree seedlings enhanced by non-structural carbohydrate level. Nature Climate Change, June 29, 2014. DOI:10.1038/nclimate2281


Contacts:

Dr Michael J. O’Brien
Institute of Evolutionary Biology and Environmental Studies
University of Zurich
Winterthurerstrasse 190

CH-8057 Zürich
Tel. +41 44 635 61 05 (currently only reachable per e-mail)
Email: michael.obrien@ieu.uzh.ch


Bettina Jakob
Media Relations
University of Zurich
Tel. +41 44 634 44 39
Email: bettina.jakob@kommunikation.uzh.ch

Weitere Informationen:

http://www.mediadesk.uzh.ch

Bettina Jakob | Universität Zürich

More articles from Life Sciences:

nachricht Common bacteria on verge of becoming antibiotic-resistant superbugs
26.03.2015 | Washington University School of Medicine

nachricht Chemical tag marks future microRNAs for processing, study shows
25.03.2015 | Rockefeller University

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Experiment Provides the Best Look Yet at 'Warm Dense Matter' at Cores of Giant Planets

In an experiment at the Department of Energy's SLAC National Accelerator Laboratory, scientists precisely measured the temperature and structure of aluminum as...

Im Focus: Energy-autonomous and wireless monitoring protects marine gearboxes

The IPH presents a solution at HANNOVER MESSE 2015 to make ship traffic more reliable while decreasing the maintenance costs at the same time. In cooperation with project partners, the research institute from Hannover, Germany, has developed a sensor system which continuously monitors the condition of the marine gearbox, thus preventing breakdowns. Special feature: the monitoring system works wirelessly and energy-autonomously. The required electrical power is generated where it is needed – directly at the sensor.

As well as cars need to be certified regularly (in Germany by the TÜV – Technical Inspection Association), ships need to be inspected – if the powertrain stops...

Im Focus: 3-D satellite, GPS earthquake maps isolate impacts in real time

Method produced by UI researcher could improve reaction time to deadly, expensive quakes

When an earthquake hits, the faster first responders can get to an impacted area, the more likely infrastructure--and lives--can be saved.

Im Focus: Atlantic Ocean overturning found to slow down already today

The Atlantic overturning is one of Earth’s most important heat transport systems, pumping warm water northwards and cold water southwards. Also known as the Gulf Stream system, it is responsible for the mild climate in northwestern Europe. 

Scientists now found evidence for a slowdown of the overturning – multiple lines of observation suggest that in recent decades, the current system has been...

Im Focus: Robot inspects concrete garage floors and bridge roadways for damage

Because they are regularly subjected to heavy vehicle traffic, emissions, moisture and salt, above- and underground parking garages, as well as bridges, frequently experience large areas of corrosion. Most inspection systems to date have only been capable of inspecting smaller surface areas.

From April 13 to April 17 at the Hannover Messe (hall 2, exhibit booth C16), engineers from the Fraunhofer Institute for Nondestructive Testing IZFP will be...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

World Conference On Regenerative Medicine 2015: Registration And Abstract Submission Now Open

25.03.2015 | Event News

University presidents from all over the world meet in Hamburg

19.03.2015 | Event News

10. CeBiTec Symposium zum Big Data-Problem

17.03.2015 | Event News

 
Latest News

Surface-modified nanoparticles endow coatings with combined properties

26.03.2015 | Trade Fair News

Novel sensor system provides continuous smart monitoring of machinery and plant equipment

26.03.2015 | Trade Fair News

Common bacteria on verge of becoming antibiotic-resistant superbugs

26.03.2015 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>