Navigation Links
Corn's roots dig deeper into South America
Date:3/24/2008

Corn has long been known as the primary food crop in prehistoric North and Central America. Now it appears it may have been an important part of the South American diet for much longer than previously thought, according to new research by University of Calgary archaeologists who are cobbling together the ancient history of plant domestication in the New World.

In a paper published in the March 24 advanced online edition of the Proceedings of the National Academy of Sciences (PNAS), U of C PhD student Sonia Zarrillo and archaeology professor Dr. Scott Raymond report that a new technique for examining ancient cooking pots has produced the earliest directly dated examples of domesticated corn (maize) being consumed on the South American continent. Their discovery shows the spread of maize out of Mexico more than 9,000 years ago occurred much faster than previously believed and provides evidence that corn was likely a vital food crop for villages in tropical Ecuador at least 5,000 years ago.

The domestication and dispersal of maize has been a hot topic in archaeology for decades and these are the earliest indisputable dates for its presence in South America, Raymond said. It has long been thought that maize may have been used south of Panama at this time for ritual purposes but this shows it was also being consumed as food.

Raymond led the excavation of tropical village sites in western Ecuador in the early 1980s, which are the oldest known villages in the Americas. Using pottery fragments recovered from the sites, Zarrillo obtained the charred remnants of prehistoric meals and found they contained starch granules from domesticated corn.

Plant material typically does not preserve very well in tropical sites but it turns out that microscopic starch grains do survive very well over the years and can be used to identify exact species of plants, Zarrillo said. Analyzing starch from charred food residues is a new technique in archae
'/>"/>

Contact: Grady Semmens
gsemmens@ucalgary.ca
403-220-7722
University of Calgary
Source:Eurekalert

Page: 1 2

Related biology news :

1. How roots find a route
2. Using DNA, scientists hunt for the roots of the modern potato
3. Could hairy roots become biofactories?
4. Hungry microbes share out the carbon in the roots of plants
5. Smart flower bulbs pull themselves to deeper ground
6. Soybean varieties viable in southern Indiana, resistant to root-knot nematode
7. Northern right whales head south to give birth, leave genetic fingerprints with NOAA researchers
8. e-SMART Technologies Continues Delivery of Its New Super SMART Card in South Korea
9. Voyage to Southern Ocean aims to study air-sea fluxes of greenhouse gases
10. e-Smart(R) Technologies Delivers Its New Super Smart Card(TM) in South Korea.
11. Antarctic expedition provides new insights into the role of the Southern Ocean for global climate
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/28/2014)... most important crop-producing countries will be fully saturated with ... trends continue, according to a new study led by ... types can already be found in around half the ... advances at its current rate, scientists fear that a ... by pests within the next 30 years. , Crop ...
(Date:8/27/2014)... MADISON, Wis. The mechanical force that a single fungal ... seem vanishingly small, but it plays a heavy role in ... biology. In fact, it may not be too much of ... onto land without the ability to respond to the touch ... Jean-Michel An, a professor of agronomy at the University of ...
(Date:8/27/2014)... -- WaferGen Bio-systems, Inc. (NASDAQ: WGBS) today announced that it ... units of common stock and warrants at a price ... million, prior to deducting underwriting discounts and commissions and ... warrants are immediately separable and will be issued separately.  ... consists of 2,000 shares of common stock and 2,000 ...
Breaking Biology News(10 mins):New study charts the global invasion of crop pests 2A touching story: The ancient conversation between plants, fungi and bacteria 2A touching story: The ancient conversation between plants, fungi and bacteria 3WaferGen Bio-Systems Announces Successful Completion of Public Offering Raising $20 Million 2WaferGen Bio-Systems Announces Successful Completion of Public Offering Raising $20 Million 3
... major component in the spice turmeric, when combined with ... and neck cancer cell growth, researchers with UCLA,s Jonsson ... widely used in South Asian and Middle Eastern cooking, ... attributed to its anti-inflammatory effects. Previous studies have shown ...
... and tissues in our bodies grow, develop and interact ... microbial pathogens that invade our bodies and cause infectious ... the methods of culturing and studying human cells have ... impermeable surfaces. While such 2-D culturing and modeling efforts ...
... of Leeds plant scientists has uncovered a snapshot of evolution ... million years ago led flowers to make male and female ... week in the Proceedings of the National Academy of ... a perfect example of how diversity stems from such genetic ...
Cached Biology News:Major component in turmeric enhance effect of chemotherapy drug in head and neck cancer 2Major component in turmeric enhance effect of chemotherapy drug in head and neck cancer 3The world is not flat: Exploring cells and tissues in three dimensions 2The world is not flat: Exploring cells and tissues in three dimensions 3The world is not flat: Exploring cells and tissues in three dimensions 4100-million-year-old mistake provides snapshot of evolution 2
(Date:8/27/2014)... 27, 2014 “We are honored to ... said Ven Thangaraj, CEO of Radiant Sage. “We are ... taking the imaging corelab market to a different level. ... research organizations to efficiently and effectively manage the massive ... to be analyzed and read by trained physicians. Being ...
(Date:8/27/2014)... 2014 Research and Markets has ... Pulp & Paper Industry Report 2014" report to ... Pulp & Paper Industry Report 2014 is a professional ... global enzyme for pulp & paper industry. ... including definitions, classifications, applications and industry chain structure. The ...
(Date:8/27/2014)... 2014 Riviera Beach, Florida based ... creation of the Sancilio Scientific Advisory Board (SSAB). ... philosophy of looking to nature for pharmaceutical advancements, ... are based on sound scientific data, analyses, expertise ... provides a vehicle for SCI to receive peer ...
(Date:8/27/2014)... (PRWEB) August 27, 2014 Remcom announces ... with new features for the biomedical industry. ... enhanced Biological Thermal Sensor, exclusive to the Bio-Pro version ... version of XFdtd, developed to calculate the biological effects ... has been added to all versions to expand engineers’ ...
Breaking Biology Technology:Radiant Sage Named to CIOReview List of 100 Most Promising Technology Companies 2Global Enzyme for Pulp & Paper Industry Report 2014 2New Sancilio & Company, Inc. Scientific Board 2New Sancilio & Company, Inc. Scientific Board 3Remcom Announces Enhanced Biological Thermal Sensor and Other Biomedical Features in XFdtd EM Simulation Software Update 2Remcom Announces Enhanced Biological Thermal Sensor and Other Biomedical Features in XFdtd EM Simulation Software Update 3
... Sunesis,Pharmaceuticals, Inc. (Nasdaq: SNSS ), a biopharmaceutical ... therapeutics for,the treatment of solid and hematologic cancers, today ... upcoming conferences:, Rodman & Renshaw 10th Annual Healthcare ... Wednesday, November 12, 2008, 2:00 p.m. EST, ...
... MINNEAPOLIS, Nov. 3 ATS Medical, Inc.,(Nasdaq: ... state-of-the-art cardiac,surgery products and services, today announced ... development of the ATS Forcefield(TM),technology. The animal ... regarding the inhibition of platelet adhesion on ...
... Journal published,an article on October 29th describing the ... and featuring quotes from,President and founder Dr. Timothy ... Transfusions: New Efforts to Recycle Blood and Treat ... part of the "The Informed Patient",series written by ...
Cached Biology Technology:Sunesis to Present at Upcoming Conferences 2ATS Forcefield Anti-platelet Technology Continues to Demonstrate Positive Results 2ATS Forcefield Anti-platelet Technology Continues to Demonstrate Positive Results 3Wall Street Journal Highlights Blood Management, Strategic Healthcare Group LLC, and Dr. Timothy Hannon 2
... Spring offers a large collection of ... fetal tissuea, cell lines, and mouse ... in pHD9 vector. The size of ... be from 200bp to 1000bp by ...
... The IDS Corticosterone kit is a competitive ... corticosterone in mouse or rat serum or ... sole, corticosteroid in rats and mice, and ... birds and reptiles. Most mammals produce both ...
Mouse monoclonal [1.F.1] to Yersinia pestis F1 antigen ( Abpromise for all tested applications). Antigen: Purified F1 antigen of Y. pestis vaccine strain EB....
Rabbit polyclonal to Nck alpha ( Abpromise for all tested applications). entrezGeneID: 4690 SwissProtID: P16333...
Biology Products: