Navigation Links
Dartmouth researchers identify an important gene for a healthy, nutritious plant
Date:7/30/2008

Dartmouth researchers identify an important gene for a healthy, nutritious plant.

The research paper, published with colleagues from Colorado State University and the University of South Carolina, appeared in the early online edition of the Proceedings of the National Academy of Science during the week of July 21.

"There's a lot of attention today on global food shortages," says Mary Lou Guerinot, the principal investigator on the study and one of the authors of the paper. "We've found a gene that is key for proper chloroplast function. This finding might some day help scientists develop plants that grow better and can serve as more nutritious food."

During photosynthesis, chloroplasts are the subcellular compartment used by plant cells to convert light energy to sugars, fueling the plant. This process in the chloroplasts requires iron, and up to 90 percent of the iron in leaf cells is located in chloroplasts. In this study, Guerinot and her colleagues provide molecular evidence that FRO7, a gene in the FRO family, is involved in chloroplast iron acquisition and is required for efficient photosynthesis. The FRO family is a group of proteins that transfers electrons from ferric iron (Fe3+) to reduce it to another kind of iron (Fe2+). This same lab showed that this process (reduction of iron) was essential for plants to take up iron into the roots from the soil in a study published in 1999 in Nature.

"We have now shown that an analogous process is required for proper chloroplast function," says Guerinot. "Moreover, without FRO7, plants sown in iron deficient soil died as young seedlings. Our findings are of particular interest because how iron gets into chloroplasts has not been well understood despite the significance of iron in chloroplasts."

Guerinot explains that one-third of the soil worldwide is iron deficient, so it is important to understand how plants acquire iron, allocate iron to different parts of the plant and within the cell, and survive under iron limiting conditions. This is not only critical to improve plant growth and crop yields but also to improve human nutrition. According to the World Health Organization, iron deficiency is the most prevalent nutritional disorder in the world today and most people get their iron from eating plants.

"Enriching crops with mineral and vitamin nutrients will provide sustainable solutions to malnutrition," she says.


'/>"/>

Contact: Sue Knapp
sue.knapp@dartmouth.edu
603-646-3661
Dartmouth College
Source:Eurekalert

Related biology news :

1. Dartmouth researchers discover gene signatures for scleroderma
2. Dartmouth researchers find the root of the evolutionary emergence of vertebrates
3. Dartmouth researchers alarmed by levels of mercury and arsenic in Chinese freshwater ecosystem
4. Dartmouth researchers show effects of low dose arsenic on development
5. Case Western Reserve University School of Medicine researchers receive $10.8 million
6. UCSF researchers identify virus behind mysterious parrot disease
7. Researchers discover cells quality control mechanism
8. Researchers analyze how new anti-MRSA abtibiotics function
9. Researchers tap into a new and potentially better source of platelets for transfusion
10. CMV infections affect more than just patients with compromised immune systems, researchers find
11. A new cellular pathway linked to cancer is identified by NYU researchers
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/15/2016)... 2016 "Increase in mobile transactions is driving ... biometrics market is expected to grow from USD 4.03 ... at a CAGR of 29.3% between 2016 and 2022. ... growing demand for smart devices, government initiatives, and increasing ... component is expected to grow at a high rate ...
(Date:12/7/2016)... , December 7, 2016 According to a new ... Learning), Software Tool (Facial Expression, Voice Recognition), Service, Application Area, End User, And ... estimated to grow from USD 6.72 Billion in 2016 to USD 36.07 Billion ... Continue Reading ... ...
(Date:12/6/2016)... WARSAW, Ind. , Dec. 6, 2016  Zimmer Biomet ... that it has priced an offering of €500.0 million principal ... €500.0 million principal amount of its 2.425% senior unsecured notes ... is expected to occur on December 13, 2016, subject to the ... on an annual basis. ...
Breaking Biology News(10 mins):
(Date:1/13/2017)... ... January 13, 2017 , ... FireflySci, in response ... customers three new solutions for measurements where traditional cuvette applications are not convenient. ... has an oddly-shaped sample that would not fit into a typical cuvette inside ...
(Date:1/12/2017)... ... January 12, 2017 , ... Each year, Crain’s Detroit Business News ranks ... that evaluates the patent estate of a company, its impact and significance, and the ... leading the way in technologies that transform energy sources such as low dose X-ray ...
(Date:1/12/2017)... (PRWEB) , ... January 12, 2017 , ... Huffman ... of Stephen Beck, who will work in the company’s Lincoln office as a chemical ... processes to design control systems for customers in the life science manufacturing and water/wastewater ...
(Date:1/12/2017)... WASHINGTON, DC , January 12, 2017 ... set up the world,s biggest facility for producing mycorrhizae. ... translated the nutrient tapping potential of mycorrhizae and developed ... ...      (Logo: http://mma.prnewswire.com/media/456932/PRNE_TERI_Logo.jpg) The TERI ...
Breaking Biology Technology: