Navigation Links
'Living fossil' tree contains genetic imprints of rain forests under climate change
Date:10/30/2008

ANN ARBOR, Mich.---A "living fossil" tree species is helping a University of Michigan researcher understand how tropical forests responded to past climate change and how they may react to global warming in the future.

The research appears in the November issue of the journal Evolution.

Symphonia globulifera is a widespread tropical tree with a history that goes back some 45 million years in Africa, said Christopher Dick, an assistant professor of ecology and evolutionary biology who is lead author on the paper. It is unusual among tropical trees in having a well-studied fossil record, partly because the oil industry uses its distinctive pollen fossils as a stratigraphic tool.

About 15 to 18 million years ago, deposits of fossil pollen suggest, Symphonia suddenly appeared in South America and then in Central America. Unlike kapok, a tropical tree with a similar distribution that Dick also has studied, Symphonia isn't well-suited for traveling across the ocean---its seeds dry out easily and can't tolerate saltwater. So how did Symphonia reach the neotropics? Most likely the seeds hitched rides from Africa on rafts of vegetation, as monkeys did, Dick said. Even whole trunks, which can send out shoots when they reach a suitable resting place, may have made the journey. Because Central and South American had no land connection at the time, Symphonia must have colonized each location separately.

Once Symphonia reached its new home, it spread throughout the neotropical rain forests. By measuring genetic diversity between existing populations, Dick and coworker Myriam Heuertz of the Universit Libre de Bruxelles were able to reconstruct environmental histories of the areas Symphonia colonized.

"For Central America, we see a pattern in Symphonia that also has been found in a number of other species, with highly genetically differentiated populations across the landscape," Dick said. "We think the pattern is t
'/>"/>

Contact: Nancy Ross-Flanigan
rossflan@umich.edu
734-647-1853
University of Michigan
Source:Eurekalert  

Page: 1 2

Related biology news :

1. TB bacterium uses its sugar coat to sweeten its chances of living in lungs
2. NSF funds new Center for the Physics of Living Cells at Illinois
3. Buckyballs have high potential to accumulate in living tissue
4. Living sensor can warn of arsenic pollution
5. Nothing stops an expert in the art of living
6. Simian foamy virus found in several people living and working with monkeys in Asia
7. Living fossils have long- and short-term memory
8. Mouse study: When it comes to living longer, its better to go hungry than go running
9. Worlds oldest living tree discovered in Sweden
10. Novel living system recreates predator-prey interaction
11. Harvard researchers publish MRI images of genes in action in the living brain
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
'Living fossil' tree contains genetic imprints of rain forests under climate change
(Date:7/25/2014)... The routine use of a molecular testing panel ... performing the correct initial surgery for patients with ... University of Pittsburgh Cancer Institute (UPCI), partner with ... Multidisciplinary Thyroid Center and other diagnostic testing agencies, ... initial surgery by 30 percent, according to the ...
(Date:7/24/2014)... loss leads to conflict among people around the world, ... (WCS) Health & Ecosystems: Analysis of Linkages (HEAL) Program ... to tackle global biodiversity decline. , The harvest of ... people and provides protein for more than a billion ... surprise that today,s unprecedented loss of wildlife, is bringing ...
(Date:7/24/2014)... use of native animal species for food or commercial ... significant factor in the decline of many species of ... indicates that more than half of the species being ... hornbills., "By surveying not only the meat made available ... inside the forest by hunters and brought to villages ...
Breaking Biology News(10 mins):Test increases odds of correct surgery for thyroid cancer patients 2Test increases odds of correct surgery for thyroid cancer patients 3New study draws links between wildlife loss and social conflicts 2
... 2013 As an expert in molecular genetics, Colin E. ... Medical Center,s Institute for Regenerative Medicine is to apply the ... human organs. But, with a background specifically in reproductive ... the over-population of homeless dogs and cats. Bishop has been ...
... provides the same quality of fuel for athletes as a ... nutrients that are more commonly found in animal products, according ... (IFT) Annual Meeting & Expo. The research was compiled ... He was unable to attend the meeting, so his presentation ...
... Health has awarded Virginia Commonwealth University a grant totaling ... work which may one day point researchers to ... inflammatory conditions such as rheumatoid arthritis, multiple sclerosis and ... by John Ryan, Ph.D., associate professor in the Department ...
Cached Biology News:Low-cost sterilization method for cats and dogs is focus of new research project 2Monitoring nutrient intake can help vegetarian athletes stay competitive 2VCU receives NIH grant to examine the biology of allergic disease 2
(Date:7/25/2014)... At the request of the AMA, ... extension for the public comment period (Docket No. FAA-2014-0396) ... Aircraft established by Congress as part of the FAA ... establishes the new deadline for comments as September 23, ... notice published in the Federal Register on July 25, ...
(Date:7/24/2014)... 2014  Now available is a stem cell therapy ... Therapies , located in Guadalajara, Mexico ... a new health option: stem cell therapies for ... patients suffer from joint and muscle injuries due to ... torn rotator cuff, tennis elbow, and knee injuries. Throughout ...
(Date:7/24/2014)... computers have yet to materialise. Yet, scientists are ... such computers faster. One such approach relies on ... by applying an electric field. A new study ... coupled quantum dots (TQDs) with electrical impulses can ... example, should TQDs be used as quantum information ...
(Date:7/24/2014)... July 24, 2014 Your cell ... in modeling lithium-ion battery storage capacity. , New ... a theoretical model created at Lawrence Livermore ... that predicts how carbon components will perform as ... emphasizes the urgent need for higher-performance batteries. Several ...
Breaking Biology Technology:FAA Grants Comment Extension at the Request of AMA 2Stem Cells In Sports Injuries, Joints And Muscular Pain 2Stem Cells In Sports Injuries, Joints And Muscular Pain 3Getting More Life out of Lithium-ion Batteries 2
... Spanish . , Scientists at the University ... time different antioxidant compounds from foods such as olive oil, ... have used two new techniques, capillary electrophoresis and high resolution ... a great part of the phenolic compounds contained in these ...
... Dec. 8 Transgenomic, Inc. (OTC Bulletin Board: TBIO) announced ... first in a family of mutation detection kits the company ... ® HS DHPLC platform. SURVEYOR Scan technology is ... amplification reaction and hybridization to form heteroduplex DNA molecules in ...
... Dec. 8 PharmAthene, Inc. (NYSE Amex: PIP ) ... medical countermeasures against chemical and biological threats, announced today that ... Time, on Wednesday, December 9, 2009 to provide an update ... The dial-in number for U.S. callers is 866-383-8108 and for ...
Cached Biology Technology:New antioxidant compounds have been identified in foods such as olive oil, honey and nuts 2Transgenomic Announces the Commercial Launch of SURVEYOR(R) Scan K-RAS Mutation Detection Kit 2Transgenomic Announces the Commercial Launch of SURVEYOR(R) Scan K-RAS Mutation Detection Kit 3Transgenomic Announces the Commercial Launch of SURVEYOR(R) Scan K-RAS Mutation Detection Kit 4PharmAthene Announces Updated Time for Conference Call to Review BARDA rPA Decision 2
Tris-Hepes kit of BG-163 & BG-165 (order number BG-166)...
... ideal for both radioactive and nonradioactive labeling ... Provides five pre-mixed nucleotide solutions for flexibility ... 8 cpm/g control DNA using [-32P]-dCTP ... performance of the system Labels 1 ...
Activating Agents, 7-azabenzotriazol-1-yloxy-tris-(pyrrolidino)phosphonium hexafluorophosphate...
... Immunogen: Fusion protein derived from ... ASIP/PAR-3 (atypical PKC isotype-specific interacting protein/ ... not related to the protease-activated-receptors also ... Xenopus (positive controls: Caco-2 MDCK A6 ...
Biology Products: