Navigation Links
First Genetically Engineered Maize Resistant to Maize Streak Virus Produced in S. Africa

Scientists at the University of Cape Town, South Africa, and colleagues at the South African seed company, PANNAR Pty Ltd, have reportedly developed a resistant variety of maize that could alleviate both food shortages and promote genetically engineered (GE) foods in Africa.

The MSV-resistant maize is the first GE crop developed and tested solely by Africans.

According to Dr. Dionne Shepherd of the University of Cape Town, and her co-authors B. Owor, R. Edema, A. Varsani, D.P. Martin, J.A. Thomson and E.P. Rybicki, maize streak viruses (MSV) are Gemini-viruses that can destroy most of a maize crop.

They 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 percent of the caloric intake in sub-Saharan Africa but, in certain years, a farmer's entire crop can be wiped out.

In their study presented at the annual meeting of the American Society of Plant Biologists in Chicago on Sunday, Shepher and her colleagues claimed that maize, which originated in Mexico, was carried to Africa in the 1500s and eventually displaced native food crops such as sorghum and millet. aize streak virus, an endemic pathogen of native African grasses, was then carried to maize plants by viruliferous leafhoppers.

They said that 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.

They said the resistance to the virus requires multiple genes located on different chromosomes, thus ruling out a straightforward process.

The group at the University of Cape Town 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 virus from replicating and killing the plant.

The transgenic maize variety has proven consistently resistant to MSV and the trait can be reliably passed on to the next generation and in crosses to other varieties, they opined.

Field trials are scheduled to begin soon, not only to test the effectiveness of the technology in the field, but also to ensure that the GE maize variety has no unintended effects on beneficial organisms that may feed on it.

The resistant maize will also be tested to ensure that the viral protein is digestible and non-allergenic.


'"/>




Related medicine news :

1. First Vaccine Designed for Africa Cleared for Testing in Humans
2. Ajanta Launches Worlds First Once-A-Day Nimesulide Oral Formulation
3. First human clone is near
4. First Artificial Heart patient has Major setback
5. First head-to-head trials of once weekly Fosamax and Actonel therapies
6. WHO Declares Vietnam First Country to Control SARS
7. Russia Reports First SARS Case
8. Hope for First New Melanoma Treatment in Decades
9. First global SARS meet opens
10. Stanford Medical Center Implements The First Virtual Cardiac Ultrasound
11. Hyderabad To Have Asia’s First Catheter Making Uni
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/24/2016)... ... June 24, 2016 , ... A recent article ... are unfamiliar with. The article goes on to state that individuals are now more ... these less common operations such as calf and cheek reduction. The Los Angeles area ...
(Date:6/24/2016)... ... June 24, 2016 , ... June 19, 2016 is World Sickle ... chronic pain and the benefits of holistic treatments, Serenity Recovery Center of ... Sickle Cell Disease. , Sickle Cell Disease (SCD) is a disorder of the red ...
(Date:6/24/2016)... ... 2016 , ... The Pulmonary Hypertension Association (PHA) learned during ... two significant new grants to support its work to advance research and patient ... recognizing patients, medical professionals and scientists for their work in fighting pulmonary hypertension ...
(Date:6/24/2016)... San Francisco, CA (PRWEB) , ... June 24, ... ... at CitiDent, is now offering micro-osteoperforation for accelerated orthodontic treatment. Dr. Cheng has ... , self-ligating Damon brackets , AcceleDent, and accelerated osteogenic orthodontics. , ...
(Date:6/24/2016)... ... June 24, 2016 , ... Topical BioMedics, Inc, makers of Topricin and MyPainAway Pain Relief Products, ... minimum wage raise to $12 an hour by 2020 and then adjusting it yearly to ... value of the minimum wage, assure the wage floor does not erode again, and make ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... 23, 2016 Any dentist who has made an ... current process. Many of them do not even offer this ... and high laboratory costs involved. And those who ARE able ... such a high cost that the majority of today,s patients ... Parsa Zadeh , founder of Dental Evolutions Inc. and ...
(Date:6/23/2016)... 23, 2016 Capricor Therapeutics, ... a biotechnology company focused on the discovery, development ... patient enrollment in its ongoing randomized HOPE-Duchenne clinical ... 50% of its 24-patient target. Capricor expects the ... quarter of 2016, and to report top line ...
(Date:6/23/2016)... and BOGOTA, Colombia , June 23, 2016  Astellas today announced the establishment of ... Farma Brasil as the company,s second affiliate in Latin America . ... ... Manager of Astellas Farma Colombia ... ...
Breaking Medicine Technology: