Navigation Links
The evolution of the mustards' spice
Date:8/30/2012

DURHAM, N.C. -- There's a reason people don't put gobs of mustard on a hot dog. Mustard plants produce a spicy chemical intended to discourage insects from eating them lest they suffer a bad case of heartburn, and it has essentially the same effect on us.

Now, an interdisciplinary and international group of researchers based at Duke University has figured out why some of those wild mustard plants vary as much as they do in terms of that spice. The variation spells the difference between life and death for the plants in the mountainous Rockies where they live, a place where environmental conditions can change quite significantly over relatively short distances.

The study reported in the August 31 issue of the journal Science is one of very few to successfully follow the genes underlying variation of complex traits in a natural setting back to the evolutionary processes that influenced them.

"We were able to put this story together all the way from the plants in the dirt to the amino acids in the laboratory," said Tom Mitchell-Olds, a professor of biology and member of the Duke Institute for Genome Sciences & Policy. "That's where the challenge came in."

Mitchell-Olds' team studies the wild mustard Boechera stricta. Boechera is their organism of choice because its close relationship to the laboratory plant Arabidopsis offers them technical advantages and because the plants live in areas that have been untouched and unchanged for the last 3,000 years.

The researchers first identified a broad region in the plants' genome that was responsible for differences in their chemical defenses, vulnerability to insects and survival and reproduction in nature. "Technically, we had no idea what this would be," Mitchell-Olds said.

Ultimately, they traced those differences back to two amino acid changes in the enzyme controlling the plants' main spicy ingredient. With sophisticated biochemistry, the researchers disco
'/>"/>

Contact: Kendall Morgan
kendall.morgan@duke.edu
919-684-2850
Duke University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Leading evolutionary scientist to discuss how genome of bacteria has evolved
2. An evolutionary surprise
3. Ancient Egyptian cotton unveils secrets of domesticated crop evolution
4. Did climate change shape human evolution?
5. A University of Tennessee professors hypothesis may be game changer for evolutionary theory
6. Analysis of stickleback genome sequence catches evolution in action
7. Study shows unified process of evolution in bacteria and sexual eukaryotes
8. Rapid method of assembling new gene-editing tool could revolutionize genetic research
9. Whats in a surname? New study explores what the evolution of names reveals about China
10. Scientists trace evolutionary history of what mammals eat
11. Not by DNA alone: How the epigenetics revolution is fostering new medicines
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/27/2014)... is related to ability that we already possess. For ... more easily than learning how to hit a tennis ... Neural Basis of Cognition (CNBC)a joint program between the ... fundamental constraint in the brain that may explain why ... Aug. 28, 2014, issue of Nature , they ...
(Date:8/27/2014)... Athens, Ga. An invasive grass species frequently found ... spiders, who then feed on American toads, a new ... which was accidentally introduced to the U.S. in the ... species and has spread to more than a dozen ... Typically found along roads and in forests, it can ...
(Date:8/27/2014)... When we want to listen carefully to someone, the ... thing we do is stop moving altogether. This strategy ... by our own movements. , This interplay between movement ... brain. Indeed, indirect evidence has long suggested that the ... auditory cortex, which gives rise to our conscious perception ...
Breaking Biology News(10 mins):Pitt and Carnegie Mellon engineers discover why learning can be difficult 2Pitt and Carnegie Mellon engineers discover why learning can be difficult 3More wolf spiders feasting on American toads due to invasive grass, UGA study shows 2More wolf spiders feasting on American toads due to invasive grass, UGA study shows 3Stop and listen: Study shows how movement affects hearing 2Stop and listen: Study shows how movement affects hearing 3
... environmental enrichment and increased social stress can both affect ... monkey research at Wake Forest University School of Medicine., ... that social rank whether animals are dominant or ... amount of cocaine that monkeys will self-administer. Housed in ...
... Institute (HHMI) researchers have found that rare mutations in ... general population. , The scientists had previously shown that ... rare diseases that are characterized by low blood pressure. ... are participating in the Framingham Heart Study, the researchers ...
... Recent research at Yale provided a glimpse of ... illuminated a relationship between gene processing in humans and ... structure of a crucial self-splicing region of RNA. ... through intermediary RNA molecules. But, after transcription from the ...
Cached Biology News:Environmental enrichment can reduce cocaine use, researchers find 2Rare genetic mutations protect against hypertension 2Rare genetic mutations protect against hypertension 3Rare genetic mutations protect against hypertension 4Yale scientists visualize the machinery of mRNA splicing 2
(Date:8/28/2014)... 28, 2014  Next month, executives from clinical trial marketing ... events beginning with Patient-Centered Clinical Trials 2014 , to ... Boston , September 4-5. Patient recruitment experts Bonnie ... Fleishman will share insights on the benefits of employing ... tactics – from media to mobile apps – can be ...
(Date:8/28/2014)... Aug. 28, 2014  Armetheon, Inc. ( www.armetheon.com ... mid- to late-stage cardiovascular drug candidates, today announced ... first round of financing. The Series A round ... Bioventures with participation from investors that included Atheneos ... Dr. Larry Hsu , the founder of ...
(Date:8/28/2014)... (PRWEB) August 28, 2014 A ... around the world is available from Strategic Consulting, ... companies. “ Industrial Microbiology Market Review, Fourth Edition: ... Market ” (IMMR—4) tracks and compares microbiology test ... North America, Europe and Asia, and forecasts future ...
(Date:8/28/2014)... Supplementing their complete line of ... Eppendorf Safe Lock Centrifuge Tubes . This ... quality tubes at an affordable price. Eppendorf Safe ... chemical, medical, pharmaceutical, and life science research and ... able to afford Eppendorf products. , Eppendorf is ...
Breaking Biology Technology:BBK Worldwide Leads Sessions at Key September Events 2Armetheon Completes $7.0 Million Series A Financing 2Armetheon Completes $7.0 Million Series A Financing 32 Billion Industrial Microbiology Tests Conducted for Product Quality and Safety Worldwide 22 Billion Industrial Microbiology Tests Conducted for Product Quality and Safety Worldwide 3Eppendorf Safe Lock Centrifuge Tube Promotion Now Available at Major Pipette Distributor Pipette.com 2Eppendorf Safe Lock Centrifuge Tube Promotion Now Available at Major Pipette Distributor Pipette.com 3
... 1 A new technology known as,ActivePure ... proven in peer-reviewed, published university laboratory studies ... inoculated,surfaces. Recent outbreaks of MRSA in ... parents concerned. Based on NASA research, ...
... Nov. 1 Martek Biosciences,Corporation (Nasdaq: MATK ... United,States District Court in Wilmington, Delaware, has ruled ... injunction in Martek,s favor,against the defendants in the ... Nutrinova Inc. and Nutrinova Nutrition Specialties &,Food Ingredients ...
... ON, Nov. 1 /PRNewswire-FirstCall/ - Vasogen Inc.,(NASDAQ: VSGN ; ... following investor conferences in November: Acumen BioFin Rodman ... New York Palace Hotel Tuesday, November 6, 2007 ... Conference, Four Seasons Hotel, Boston Tuesday, November 13, ...
Cached Biology Technology:New ActivePure Technology Proven To Reduce Exposure to Methicillin Resistant Staphylococcus Aureus (MRSA) 2Martek to Obtain Permanent Injunction Against Lonza in U.S. Patent Infringement Suit; Jury Verdict on Infringement of Two of Three Patents Upheld by Judge 2Martek to Obtain Permanent Injunction Against Lonza in U.S. Patent Infringement Suit; Jury Verdict on Infringement of Two of Three Patents Upheld by Judge 3Vasogen to Webcast Presentations at Three Upcoming Healthcare Conferences 2Vasogen to Webcast Presentations at Three Upcoming Healthcare Conferences 3
{3,8-diamino-5-[3-(diethylmethylammonio)propyl]-6-phenylphenanthridinium diiodide}. ,250 ug/ml Propidium Iodide (PI) in PBS....
Propidium Iodide: {3,8-diamino-5-[3-(diethylmethylammonio)propyl]-6-phenylphenanthridinium diodide}. Antifade Solution: p-Phenylenediamine and glycerol in PBS solution. 2.5ug/mL Propidium Iodide (PI)...
Detects caspase activation by flow cytometry....
Concentration: 1mg/ml. Antigen: Propidium Iodide ...
Biology Products: