Navigation Links
Domestication of Capsicum annuum chile pepper provides insights into crop origin and evolution
Date:6/19/2009

Without the process of domestication, humans would still be hunters and gatherers, and modern civilization would look very different. Fortunately, for all of us who do not relish the thought of spending our days searching for nuts and berries, early civilizations successfully cultivated many species of animals and plants found in their surroundings. Current studies of the domestication of various species provide a fascinating glimpse into the past.

A recent article by Dr. Seung-Chul Kim and colleagues in the June 2009 issue of the American Journal of Botany explores the domestication of chiles. These hot peppers, found in everything from hot chocolate to salsa, have long played an important role in the diets of Mesoamerican people, possibly since as early as ~8000 B.C. Capsicum annuum is one of five domesticated species of chiles and is notable as one of the primary components, along with maize, of the diet of Mesoamerican peoples. However, little has been known regarding the original location of domestication of C. annuum, the number of times it was domesticated, and the genetic diversity present in wild relatives.

To answer these questions, Dr. Kim and his team examined DNA sequence variation and patterns at three nuclear loci in a broad selection of semiwild and domesticated individuals. Dr. Kim et al. found a large amount of diversity in individuals from the Yucatan Peninsula, making this a center of diversity for chiles and possibly a location of C. annuum domestication. Previously, the eastern part of central Mexico had been considered to be the primary center of domestication of C. annuum. On the basis of patterns in the sequence data, Dr. Kim et al. hypothesize that chiles were independently domesticated several times from geographically distant wild progenitors by different prehistoric cultures in Mexico, in contrast to maize and beans which appear to have been domesticated only once.

Geographical separation among cultivated populations was reflected in DNA sequence variation. This separation suggests that seed exchange among farmers from distant locations is not significantly influencing genetic diversity, in contrast to maize and beans seeds, which are traded by farmers across long distances. Less genetic diversification was seen in wild populations of C. annuum from distant locales, perhaps as a result of long-distance seed dispersal by birds and mammals.

Across the three loci studied, Dr. Kim and colleagues found an average reduction in diversity of 10% in domesticated individuals compared with the semiwild individuals. Domesticated chiles in traditional agricultural habits, however, harbor unique gene pools and serve as important reservoirs of genetic diversity important for conserving biodiversity.


'/>"/>

Contact: Richard Hund
rhund@botany.org
American Journal of Botany
Source:Eurekalert  

Related biology news :

1. Worlds hottest chile pepper discovered
2. Study of guanacos launched in Chile
3. USGS to help Chile develop volcano early warning system
4. Hot peppers really do bring the heat
5. New research reveals why chili peppers are hot
6. The pepperoni pizza hypothesis
7. New hybrid plants could prompt more prodigious pepper production in Southwest
8. Parasite-resistant peppers green alternatives to chemical pesticides
9. Improved e-jet printing provides higher resolution and more versatility
10. Canada provides $1.4M for removal of hazardous trees from provincial recreation sites
11. Study involving more than 100 scientists provides new insights on green algae
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Domestication of Capsicum annuum chile pepper provides insights into crop origin and evolution
(Date:3/28/2017)... 2017 The report "Video Surveillance ... Servers, Storage Devices), Software (Video Analytics, VMS), and Service ... Forecast to 2022", published by MarketsandMarkets, the market was ... projected to reach USD 75.64 Billion by 2022, at ... base year considered for the study is 2016 and ...
(Date:3/23/2017)... The report "Gesture Recognition and Touchless Sensing Market by Technology (Touch-based ... to 2022", published by MarketsandMarkets, the market is expected to be worth USD ... 2022. Continue Reading ... ... ...
(Date:3/22/2017)... 21, 2017 Vigilant Solutions , a ... enforcement agencies, announced today the appointment of retired FBI ... public safety business development. Mr. Sheridan brings ... including a focus on the aviation transportation sector, to ... position, Mr. Sheridan served as the Aviation Liaison Agent ...
Breaking Biology News(10 mins):
(Date:4/24/2017)... (PRWEB) , ... April 24, 2017 , ... ... from thermal denaturation in a cellular milieu; however, the broad application of this ... of simple platforms with sensitive quantitative readouts. Cell-based thermal stabilization assays are valuable ...
(Date:4/21/2017)... ... April 21, 2017 , ... ... today announced first round funding to three startups through the UConn Innovation Fund. ... to new business startups affiliated with UConn. , The UConn Innovation Fund provides ...
(Date:4/21/2017)... ... , ... Frederick Innovative Technology Center, Inc. (FITCI), a business ... earned a $77,518 grant from the Rural Maryland Council (RMC) to support refurbishment ... first incubator. A non-profit corporation, FITCI is a public-private partnership of the governments ...
(Date:4/20/2017)... ... April 20, 2017 , ... USDM Life Sciences , ... sciences and healthcare industries, is pleased to announce Holger Braemer as Vice ... “USDM Europe GmbH” based in Germany. , Braemer is an integral part of ...
Breaking Biology Technology: