Navigation Links
Study offers clues to how plants evolved to cope with cold
Date:12/22/2013

Durham, NC Researchers have found new clues to how plants evolved to withstand wintry weather. In a study to appear in the December 22 issue of the journal Nature, the team constructed an evolutionary tree of more than 32,000 species of flowering plants the largest time-scaled evolutionary tree to date. By combining their tree with freezing exposure records and leaf and stem data for thousands of species, the researchers were able to reconstruct how plants evolved to cope with cold as they spread across the globe. The results suggest that many plants acquired characteristics that helped them thrive in colder climates such as dying back to the roots in winter long before they first encountered freezing.

Fossil evidence and reconstructions of past climatic conditions suggest that early flowering plants lived in warm tropical environments, explained co-author Jeremy Beaulieu at the National Institute for Mathematical & Biological Synthesis (NIMBioS) at the University of Tennessee.

As plants spread to higher latitudes and elevations, they evolved in ways that helped them deal with cold conditions. Plants that live in the tundra, such as Arctic cinquefoil and three-toothed saxifrage, can withstand winter temperatures below minus 15 degrees Celsius.

Unlike animals, most plants can't move to escape the cold or generate heat to keep them warm. It's not so much the cold but the ice that poses problems for plants. For instance, freezing and thawing cause air bubbles to form in the plant's internal water transport system.

"Think about the air bubbles you see suspended in the ice cubes," said co-author Amy Zanne of the George Washington University. "If enough of these air bubbles come together as water thaws they can block the flow of water from the roots to the leaves and kill the plant."

The researchers identified three traits that help plants get around these problems.

Some plants, such as hickories and oa
'/>"/>

Contact: Kurtis Hiatt
kkhiatt@gwu.edu
202-735-6361
National Evolutionary Synthesis Center (NESCent)
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Study by UC Santa Barbara researchers suggests that bacteria communicate by touch
2. Law that regulates shark fishery is too liberal: UBC study
3. New study will help protect vulnerable birds from impacts of climate change
4. Study jointly led by UCSB researcher supports theory of extraterrestrial impact
5. BYU study: Using a gun in bear encounters doesnt make you safer
6. 15-year study: When it comes to creating wetlands, Mother Nature is in charge
7. Pycnogenol (French maritime pine bark extract) shown to improve menopause symptoms in new study
8. Crystal structure of archael chromatin clarified in new study
9. EU-funded study underlines importance of Congo Basin for global climate and biodiversity
10. University of Houston study shows BP oil spill hurt marshes, but recovery possible
11. Study demonstrates cells can acquire new functions through transcriptional regulatory network
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Study offers clues to how plants evolved to cope with cold
(Date:8/3/2015)... JOSE, Calif. , Aug. 3, 2015 ... of human interface solutions, today announced that members of ... community at the Pacific Crest Global Technology Leadership Forum ... Time. The conference will be held at the Sonnenalp ... The presentation may include forward-looking information. An ...
(Date:7/31/2015)... SHENZHEN, China , 31 de julho de 2015 ... Genômica (ICG-10, www.icg-10.org ) será realizada pela BGI de ... China . A conferência está ... inauguração em 2006, a ICG se tornou uma das ... e um dos encontros científicos mais dinâmicos, entusiastas e ...
(Date:7/31/2015)... -- Die 10. internationale Konferenz zu Genomik (ICG-10, ... findet vom 22. bis 25. Oktober 2015 in ... Die Konferenz feiert in diesem Jahr ... die ICG weltweit zu einem der einflussreichsten jährlichen ... der dynamischsten, enthusiastischsten und angenehmsten wissenschaftlichen Zusammentreffen. ...
Breaking Biology News(10 mins):A 10a. Conferência Internacional sobre Genômica (ICG-10) será em outubro 2A 10a. Conferência Internacional sobre Genômica (ICG-10) será em outubro 3Die 10. internationale Konferenz zu Genomik (ICG-10) beginnt im Oktober 2Die 10. internationale Konferenz zu Genomik (ICG-10) beginnt im Oktober 3
... was in Dr. F. G. Johnson,s French Female Pills ... cures that were the only medicines available to sick people ... provided a glimpse today based on an analysis of a ... was part of the 245th National Meeting & Exposition of ...
... Fla. A structural biologist at the Florida State ... lead scientists a step closer to understanding how life ... Michael Blaber and his team produced data supporting the ... Earth around 4 billion years ago were capable of ...
... half of them Simon Fraser University graduates and/or faculty ... A paper detailing their newly created sequencing of the mountain ... of scientists trying to stem the beetle,s invasion into eastern ... paper., "We know a lot about how beetle infestations can ...
Cached Biology News:First tests of old patent medicine remedies from a museum collection 2Researcher offers clues on the origins of life 2Researcher offers clues on the origins of life 3SFU researchers help unlock pine beetle's Pandora's box 2
(Date:8/28/2015)... ... August 28, 2015 , ... ... has organized and will present a session on chemical spectroscopic imaging at JASIS ... and exposition is Asia’s largest analytical and scientific instruments show which will be ...
(Date:8/27/2015)... ... 27, 2015 , ... The Kansas City Animal Health Investment ... health companies to hear from animal health companies with the newest technology. Companies ... agreements or distribution contracts. This meeting is one of the only investment ...
(Date:8/27/2015)... Fla. , Aug. 27, 2015 The ... that a patient,s eyes—and life—were saved by doctors at ... , working with NNFF, NovaBay Pharmaceuticals and Dr. ... Care Center at Seton Medical Center in ... successful treatment used a breakthrough approach, pioneered by Dr. ...
(Date:8/27/2015)... YORK , August 27, 2015 ... enhancing image processing functions in the human vision system, announced ... point guard Chris Paul to develop ... players who want to improve their real-life on-court performance. ... the court, whether it is shooting a ball or blocking ...
Breaking Biology Technology:U.S. Symposium on Imaging Organized by Pittcon’s Program Chairman Chuck Gardner 2U.S. Symposium on Imaging Organized by Pittcon’s Program Chairman Chuck Gardner 3VetStem Biopharma, Inc. Among Seventeen Companies Selected to Present at the KC Animal Health Investment Forum on September 1st 2015 2VetStem Biopharma, Inc. Among Seventeen Companies Selected to Present at the KC Animal Health Investment Forum on September 1st 2015 3Patient's Life and Eyes Saved from Gruesome Flesh-Eating Infection Consuming Her Face 2Patient's Life and Eyes Saved from Gruesome Flesh-Eating Infection Consuming Her Face 3Eight-Time All-Star Chris Paul and GlassesOff Partner to Develop Innovative Mobile App Designed to Improve On-Court Performance 2Eight-Time All-Star Chris Paul and GlassesOff Partner to Develop Innovative Mobile App Designed to Improve On-Court Performance 3
... there's always one person in a crowd who is proud ... me. I'm compulsive about reading the job classifieds. , ,Don't ... the difference between the ubiquitous "excellent communication skills" and the ... quick scan every day, even if it happens to be ...
... a maker of automotive and ... bought Pro-Tel Inc. for an ... a contracting company founded in ... 70 employees. Its repair and ...
... Gas & Electric has released its 2005 Greater ... and updated listings covering 394 organizations. , ,The directory, ... offers an overview of the high-tech firms, professional organizations, ... in Dane County, as well as an array of ...
Cached Biology Technology:Is IT leadership a position or an attitude? 2Is IT leadership a position or an attitude? 32005 Madison-area tech directory includes more companies, resources 22005 Madison-area tech directory includes more companies, resources 3
... apoptosis in mammalian cells. The CaspSCREEN ... simple and convenient means for detecting activation ... cells. The assay utilizes a substrate ... rhodamine 110 (D2R), a reported substrate for ...
...
The PROTEAN II slab gel casting stand is a component of the PROTEAN II XL and xi casting apparatus. It is supplied with gaskets....
BD Falcon insert HTS 96 well, square A-bottom with lid. PET membrane, sterile. (5/ca) Packaging: 5 / pack, 5 / case ...
Biology Products: