Featured Research

from universities, journals, and other organizations

Early agricultural piracy informs the domestication of rice

Date:
June 9, 2011
Source:
Public Library of Science
Summary:
Researchers are casting new light on the origins of rice. By reconciling two theories, scientists show that the domestication of rice occurred at least twice independently but with extensive "borrowing" between the two subspecies.

The origins of rice have been cast in a new light by research publishing in the open-access journal PLoS Genetics on June 9, 2011. By reconciling two theories, the authors show that the domestication of rice occurred at least twice independently but with extensive "borrowing" between the two subspecies.

Indica and japonica are, respectively, the southern and northern varieties of rice and they are major staple crops in Asia. Whether they share a single origin of domestication or were domesticated independently twice interests both historians and biologists, and the two views had seemed mutually exclusive. However, researchers from Sun Yat-Sen University and Beijing Institute of Genomics (BIG) and the University of Chicago, are now suggesting that these two views may both be correct, depending on the traits or genes being discussed.

Using new-generation sequencing technology, Suhua Shi, Chung-I Wu, and their research teams studied the kinship of rice by examining the 50,000 or so genes in the rice genome. For most of the genes, indica and japonica are indeed no closer to each other in kinship than each is to wild rice, supporting the more popular view that the two cultivars were independently domesticated. However, when the gene regions for traits influenced by artificial selection were examined, indica and japonica appear to share a surprisingly strong kinship.

In light of this new data, the story of rice domestication may need to be revisited. Early northern and southern farmers may have cultivated rice independently but it seems that they also borrowed desired traits extensively from rice farmed by others, resulting in the opposing kinships reported. This begs the question as to whether intellectual piracy has been with us since humans first became engaged in agricultural production.


Story Source:

The above story is based on materials provided by Public Library of Science. Note: Materials may be edited for content and length.


Journal Reference:

  1. Ziwen He, Weiwei Zhai, Haijun Wen, Tian Tang, Yu Wang, Xuemei Lu, Anthony J. Greenberg, Richard R. Hudson, Chung-I Wu, Suhua Shi. Two Evolutionary Histories in the Genome of Rice: the Roles of Domestication Genes. PLoS Genetics, 2011; 7 (6): e1002100 DOI: 10.1371/journal.pgen.1002100

Cite This Page:

Public Library of Science. "Early agricultural piracy informs the domestication of rice." ScienceDaily. ScienceDaily, 9 June 2011. <www.sciencedaily.com/releases/2011/06/110609173712.htm>.
Public Library of Science. (2011, June 9). Early agricultural piracy informs the domestication of rice. ScienceDaily. Retrieved October 21, 2014 from www.sciencedaily.com/releases/2011/06/110609173712.htm
Public Library of Science. "Early agricultural piracy informs the domestication of rice." ScienceDaily. www.sciencedaily.com/releases/2011/06/110609173712.htm (accessed October 21, 2014).

Share This



More Plants & Animals News

Tuesday, October 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

'Cadaver Dog' Sniffs out Human Remains

'Cadaver Dog' Sniffs out Human Remains

AP (Oct. 21, 2014) Where's a body buried? Buster's nose can often tell you. He's a cadaver dog, specially trained to find human remains and increasingly being used by law enforcement and accepted in courts. These dogs are helping solve even decades-old mysteries. (Oct. 21) Video provided by AP
Powered by NewsLook.com
White Lion Cubs Born in Belgrade Zoo

White Lion Cubs Born in Belgrade Zoo

AFP (Oct. 20, 2014) Two white lion cubs, an extremely rare subspecies of the African lion, were recently born at Belgrade Zoo. They are being bottle fed by zoo keepers after they were rejected by their mother after birth. Duration: 00:42 Video provided by AFP
Powered by NewsLook.com
Traditional Farming Methods Gaining Ground in Mali

Traditional Farming Methods Gaining Ground in Mali

AFP (Oct. 20, 2014) He is leading a one man agricultural revolution in Mali - Oumar Diatabe uses traditional farming methods to get the most out of his land and is teaching others across the country how to do the same. Duration: 01:44 Video provided by AFP
Powered by NewsLook.com
Goliath Spider Will Give You Nightmares

Goliath Spider Will Give You Nightmares

Buzz60 (Oct. 20, 2014) An entomologist stumbled upon a South American Goliath Birdeater. With a name like that, you know it's a terrifying creepy crawler. Sean Dowling (@SeanDowlingTV) has the details. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins