HOME >> BIOLOGY >> NEWS
First all-African produced genetically engineered maize is resistant to maize streak virus

Maize streak viruses (MSV), geminiviruses that can destroy most of a maize crop, are endemic to sub-Saharan Africa and adjacent Indian Ocean islands where they are transmitted by leafhoppers in the genus Cicadulina. Maize can supply 50% of the caloric intake in sub-Saharan Africa but, in certain years, a farmers entire crop can be wiped out. Now, scientists at the University of Cape Town, South Africa, along with colleagues at the South African seed company, PANNAR Pty Ltd, have developed a resistant variety of maize that they hope will help alleviate food shortages as well as promote the reputation of genetically engineered (GE) foods in Africa. Dr. Dionne Shepherd of the University of Cape Town will be presenting the results of her recent work and that of coauthors B. Owor, R. Edema, A. Varsani, D.P. Martin, J.A. Thomson and E.P. Rybicki, at the annual meeting of the American Society of Plant Biologists in Chicago (July 8, 11:20 AM) in a major symposium on Plant Biology in Sub-Saharan Africa organized by Debby Delmer of UC Davis.

Maize, which originated in Mexico, was carried to Africa in the 1500s and eventually displaced native food crops such as sorghum and millet. Maize streak virus, an endemic pathogen of native African grasses, was then carried to maize plants by viruliferous leafhoppers. African scientists have been working for more than a quarter century on developing resistant varieties of maize by selecting and crossing varieties with various degrees of resistance to the virus.

However, resistance requires multiple genes located on different chromosomes, so the process is not straightforward. The group at the University of Cape Town took the opposite approach. They mutated a viral gene that encodes a protein that the virus needs to replicate itself and inserted it into maize plants. When the virus infects one of these transgenic maize plants, the mutated protein, which is expressed at a high level, prevents the vir
'"/>

Contact: Brian Hyps
bhyps@aspb.org
240-354-5160
American Society of Plant Biologists
8-Jul-2007


Page: 1 2 3

Related biology news :

1. First case of successful ovarian tissue transplantation between two, nonidentical sisters
2. First new multiple sclerosis gene found in 30 years
3. First genome-wide study of infectious disease opens new avenues for HIV treatment, vaccines
4. First baby is born after oocytes were matured in the lab and frozen
5. First confirmed common genetic risk factors for breast cancer
6. First demonstration of new hair follicle generation in an animal model
7. First research to show that diabetes damages DNA in mens sperm and may affect fertility
8. First demonstration of muscle restoration in an animal model of Duchenne muscular dystrophy
9. First systematic study of Chinas one-child policy reveals complexity, effectiveness
10. First international conference on self-healing materials
11. First impressions: Computer model behaves like humans on visual categorization task

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:12/25/2018)... ... December 24, 2018 , ... Researchers at the ... a new use for a long-standing computational concept known as “blacklisting,” which is ... and messages. Using blacklisting as a filter to single out genetic variations in ...
(Date:12/19/2018)... ... December 19, 2018 , ... NDA Partners Chairman Carl Peck, MD, announced ... the FDA Center for Devices and Radiological Health (CDRH), has been appointed a Partner ... since 2015, and she has more than 25 years of regulatory experience. In addition ...
(Date:12/18/2018)... , ... December 18, 2018 , ... ... effectively incorporated artificial intelligence into client marketing. The technology has been effective at ... R3 Stem Cell has been working with clients nationwide on patient acquisition marketing ...
Breaking Biology News(10 mins):
(Date:1/15/2019)... ... ... the U.S. Congress designating January as Cervical Health Awareness Month , myLAB ... help reduce the risk of Cervical Cancer. , Cervical cancer is a slow-growing ... most common STD and an STI that almost half of all American adults have. ...
(Date:1/10/2019)... ... ... VGI Medical was founded in 2007 based on an invention developed by ... including VerteLoc, CerLoc, SiJoin and VerteLP. The VerteLoc and CerLoc systems are specifically designed ... design to limit motion of the affected spinal segment. Applying the principles of this ...
(Date:1/4/2019)... ... 01, 2019 , ... uBiome, the leader in microbial genomics, ... Meeting January 22-25, 2019 held in Davos-Klosters, Switzerland following their selection as a ... Meeting brings together leaders of global society–the heads and members of more than ...
(Date:12/19/2018)... ... 2018 , ... RURO, Inc., a leading provider of information ... The new release enhances the latest version of Limfinity®, RURO’s software framework, and ... , Validation protocols, and their execution, are critical for software systems scrutinized by ...
Breaking Biology Technology:
Cached News: