Genetically modified rice: Difference between revisions
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[[New Rice for Africa]] ("NERICA") is an interspecific cultivar of rice developed by the West Africa Rice Development Association (WARDA) to improve the yield of African rice varieties. |
[[New Rice for Africa]] ("NERICA") is an interspecific cultivar of rice developed by the West Africa Rice Development Association (WARDA) to improve the yield of African rice varieties. |
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Revision as of 03:24, 28 November 2011
Genetically modified rice is a type of rice that has undergone genetic modifications for agricultural purposes. The rice is usually modified using particle bombardment or more commonly, a process known as agrobacterium mediated transformation [1] . Rice plants can be modified to be herbicide resistant, resist pests, increase grain size, generate nutrients, and even produce human proteins [1]. Natural movement of genes between species, often called horizontal gene transfer or lateral gene transfer, can occur with rice because of gene transfer mediated by natural processes. There is new scientific literature about natural transgenic events in plants, through movement of natural mobile DNAs called MULEs between rice and Setaria millet [2].
Strains of GM Rice
Herbicide Resistant Varieties
Monsanto
Monsanto produces herbicide resistant crops including soybean, corn, sugarbeets, and canola among others.[3]The company focuses on developing crops that are resistant to glyphosates (the active chemical in Roundup brand herbicide) known in the industry as Roundup Ready products.[4].Monsanto allowed research into roundup ready rice for one year (2000-2001) but has not developed the variety for market.[5]
Bayer
Bayer’s line of herbicide resistant rice is known as Liberty Link.[6] Liberty Link rice is a transgenic variety of rice resistant to glufosinate (the active chemical in Liberty herbicide).[4]Bayer crop sciences is currently attempting to get their latest variety (LL62) approved for use in the EU. The strain has already been approved for use in the U.S. but is not in large scale use.
Note: Both Roundup Ready and Librty Link producers also manufacture the herbicide they are modified to resist.
ClearField
Clearfield rice was created by selective breeding in environments known to cause accelerated rates of mutations. [7]As there is no direct genetic manipulation, the rice is considered to be natural with genetically favorable traits. [7]Clearfield is resistant to a line of herbicides known as imidazolinones and has been bred with higher yielding varieties to produce an overall hardier plant. [7]
Nutrient Modified Varieties
Golden Rice
Golden rice was originally created by Dr. Ingo Potrykus and his team in Zurich, Switzerland. [8]This genetically modified rice is capable of producing beta-carotene in the endosperm (grain) which is a pre cursor for vitamin A production. [8] Potrykus’s goal is to distribute the rice to poor countries whose citizens suffer blindness and even death from a lack of vitamin A. [8] Currently, the company SynGenta owns the license for commercial distribution of golden rice. [8] The scientific details of the rice were first published in Science in 2000.
Ventria Bioscience
Ventria Bioscience uses a proprietary system known as Express Tec for producing recombinant human proteins in rice grains.[9]Their most notable variety produces human Lactoferrin and Lysozyme. [9] These two proteins are produced naturally in human breast milk and are used globally in infant formula and rehydration products. [9] The company’s primary facility is located in Kansas. [10]
Pest Resistant Varieties
BT rice
BT rice is modified to express the cryIA(b) gene of the bacillus thuringiensis bacterium.[11] The gene confers resistance to a variety of pests including the rice borer through the production of endotoxins . .[11][12]China has approved the rice for large scale use as of 2009. [12]
Legal Issues
(coming soon)
New Rice for Africa ("NERICA") is an interspecific cultivar of rice developed by the West Africa Rice Development Association (WARDA) to improve the yield of African rice varieties.
References
- ^ a b Sharma, Arun K., and Manoj K. Sharma. "Plants as Bioreactors: Recent Developments and Emerging Opportunities." Biotechnology Advances 27 (2009): 811-32. Science Direct. Web. 05 Nov. 2011.
- ^ PLoS Biology - (2006) Jumping Genes Cross Plant Species Boundaries. PLoS Biol 4(1): e35 doi:10.1371/journal.pbio.0040035 Published: December 20, 2005 Copyright: © 2005 Public Library of Science.
- ^ http://www.monsanto.com
- ^ a b Williams, Bill J., Ron Strahan, and Eric P. Webster. "Weed Management Systems for Clearfield Rice." Louisiana Agriculture June-July 2002. LSUAgcenter.com. 01 May 2010. Web. 15 Nov. 2011.
- ^ Baldwin, Ford. "Rice Weed Control Technology." Delta Farm Press. 02 Feb. 2009. Web. 11 Nov. 2011.
- ^ Gunther, Marc. "Genetically Engineered Rice Gets into the U.S. Food Supply - July 9, 2007." CNNMoney - Business, Financial and Personal Finance News. 27 June 2007. Web. 11 Nov. 2011. <http://money.cnn.com/magazines/fortune/fortune_archive/2007/07/09/100122123/index.htm>.
- ^ a b c Croughan, Timothy P. "Clearfield Rice: It's Not a GMO." LSUAgCenter.com. LSU Agricultural Magazine, Sept.-Oct. 2003. Web. 11 Nov. 2011.
- ^ a b c d Christensen, Jon. "SCIENTIST AT WORK: Ingo Potrykus; Golden Rice in a Grenade-Proof Greenhouse." New York Times. 21 Nov. 2000. Web. 10 Nov. 2011.
- ^ a b c http://www.ventria.com
- ^ "Kansas Welcomes Altered Rice Crops from Ventria - Sacramento Business Journal." Business News - The Business Journals. Sacremento Business Journal. Web. 27 Nov. 2011. <http://www.bizjournals.com/sacramento/stories/2006/10/09/story4.html>.
- ^ a b Fujimoto, Hideya, Kimiko Itoh, Mikihiro Yamamoto, and Junko Kyozuka. "Insect Resistant Rice Generated by Introduction of a Modified -endotoxin Gene of Bacillus Thuringiensis." Nature Biotechnology 11 (1993): 1151-155. Nature.com. Web. 15 Nov. 2011. <http://www.nature.com/nbt/journal/v11/n10/abs/nbt1093-1151.html>.
- ^ a b James, Clive. "China Approves Biotech Rice and Maize in Landmark Decision." Isaaa.org. 4 Dec. 2009. Web. 06 Nov. 2011. <http://www.isaaa.org/kc/cropbiotechupdate/article/default.asp?ID=5112>.
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