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:4/13/2017)... April 13, 2017 According to a new market ... Identity Analytics, Identity Administration, and Authorization), Service, Authentication Type, Deployment Mode, Vertical, ... Market is expected to grow from USD 14.30 Billion in 2017 to ... of 17.3%. ... MarketsandMarkets Logo ...
(Date:4/11/2017)... 2017 No two people are believed ... New York University Tandon School of Engineering and ... that partial similarities between prints are common enough ... phones and other electronic devices can be more ... lies in the fact that fingerprint-based authentication systems ...
(Date:4/5/2017)... April 5, 2017  The Allen Institute for Cell ... Explorer: a one-of-a-kind portal and dynamic digital window into ... data, the first application of deep learning to create ... cell lines and a growing suite of powerful tools. ... these and future publicly available resources created and shared ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... of a United States multicenter, prospective clinical study that demonstrates the accuracy ... test capable of identifying clinically significant acute bacterial and viral respiratory tract ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... launched Rosalind™, the first-ever genomics analysis platform specifically designed for life science ... in honor of pioneering researcher Rosalind Franklin, who made a major contribution ...
(Date:10/11/2017)... ... ... wash is a basic first aid supply for any work environment, but most personal eye ... first if a dangerous substance enters both eyes? It’s one less decision, and likely quicker ... eye piece. , “Whether its dirt and debris, or an acid or alkali, getting anything ...
(Date:10/11/2017)... , Oct. 11, 2017  VMS BioMarketing, a leading ... a nationwide oncology Clinical Nurse Educator (CNE) network, which will ... need for communication among health care professionals to enhance the ... nurses, office staff, and other health care professionals to help ... breast cancer. ...
Breaking Biology Technology: