HOME >> BIOLOGY >> NEWS
New rices may help address vitamin A and iron deficiency, major causes of death in the developing world

etable origin (e.g., unrefined cereals including rice, nuts, dark leafy vegetables), whose poor absorption is considered a major factor in the etiology of iron deficiency anemia. Also legume staples and grains, including rice, are high in phytic acid, which is a potent inhibitor of iron absorption. Foods that enhance non-heme absorption such as fruits and vegetables rich in ascorbic acid, are often limited in developing countries. Heme iron, which is relatively well absorbed by the human intestine, is found primarily in foods containing blood and muscle. Due to their expense and lack of availability, heme iron-rich foods are often only a negligible part of a typical developing country diet.

Dr. Potrykus and his collaborators achieved beta-carotene production in rice grain by adding three genes to rice plants, two from daffodil and one from the bacterium Erwina uredovora. The resulting transgenic rice plants produce sufficient beta-carotene -- converted to vitamin A in humans -- in the grain to meet total vitamin A requirements in a typical Asian diet. (see attached scientific abstract)

To increase the bioavailability of iron in the rice grain, the Swiss-based researchers increased the iron content and enhanced iron absorption. To double the iron content in rice, the research team added a ferritin gene derived from French bean. Ferritin is an iron storage protein found in many animals, plants and bacteria.

Iron absorption, which is inhibited by phytic acid found in the rice, was increased by introducing a phytase gene that degrades the phytic acid and by overexpressing the rice's own iron absorption-enhancing cysteine-containing proteins.

Following careful tests to determine the impact, if any, on the environment and human health and after acceptance by national biosafety authorities, the novel varieties of rice will be distributed free of charge by IRRI and various national agricultural research centers in developing countries. Local rice
'"/>

Contact: Ellen Wilson, Dennis Kelly, or Eileen Kugler
ewilson@burnessc.com
301-652-1558
XVI International Botanical Congress
3-Aug-1999


Page: 1 2 3 4

Related biology news :

1. Deregulation will cause significant fluctuations in electricity prices, new study reveals
2. National nanotech expert to address UW-Madison conference
3. Rimonbant shows promise in addressing multiple risk factors
4. Worlds largest-ever sea turtle symposium to address plummeting populations of sea turtles
5. Parasites enzyme structure helps address a public health issue
6. Briefing to address what women dont know about lung cancer
7. Whalley picked for keynote address at The Gerontological Society of Americas 2003 Annual Meeting
8. New vaccines may address need to protect newborns in the developing world
9. Immerge BioTherapeutics announces new findings addressing key safety risk in xenotransplantation
10. Scientists at Scripps Research Institute address mysteries of ozone in the human body
11. Life sciences publishers take steps to address potential misuse of information by bioterrorists

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


(Date:10/3/2019)... FORT WORTH, Texas (PRWEB) , ... October 01, ... ... to support the aseptic pouring and dispensing of chemicals, reagents, and medias and ... “The second generation CHEM+POUR Bag is the culmination of years of experience and ...
(Date:9/30/2019)... ... ... As human induced pluripotent stem cells (hiPSCs) move closer to becoming a possible ... human heart, there is an increasing need for stable stem cell lines that allow ... easily recorded. A study released today in STEM CELLS details the development of one ...
(Date:9/25/2019)... ... 25, 2019 , ... LeadingBiotech , an exclusive event ... its inaugural South CEO conference to be held on October 8, ... Tulane University, this invitation-only meeting convenes biopharma executives to discuss pressing issues facing ...
Breaking Biology News(10 mins):
(Date:10/3/2019)... ... 01, 2019 , ... Today Cereset®, the only proven non-invasive ... of its randomized research trial for individuals with persisting symptoms following mild-Traumatic Brain ... a non-invasive technology which compares tones delivered to a subject’s brain guided by ...
(Date:10/3/2019)... ... October 02, 2019 , ... Murrieta Genomics , the launch pad ... capital companies in Silicon Valley at a special Life Science showcase event ... held at the JJ Lake Business Center located at 340 E. Middlefield Road in ...
(Date:10/3/2019)... ... October 03, 2019 , ... Yesterday, at the 2019 meeting of ... and director, James L. Sherley, M.D., Ph.D., discussed important design factors that currently limit ... including both developers and suppliers of clinical trials, in his talk Dr. ...
(Date:9/24/2019)... ... , ... Drug resistance has been declared as one of the biggest threats ... of the most serious concerns. Hong Kong cannot be spared from the worsening scourge ... a seven-fold of the figure in 2007 – the year the disease became notifiable ...
Breaking Biology Technology:
Cached News: