Navigation Links
New study sheds light on genetics of rice metabolism
Date:2/7/2012

A large-scale study analyzing metabolic compounds in rice grains conducted by researchers at the RIKEN Plant Science Center (PSC) and their collaborators has identified 131 rice metabolites and clarified the genetic and environmental factors that influence their production. The findings provide a natural way to bioengineer improved rice grain varieties by selectively increasing production of useful metabolites, boosting the nutritional value of crops.

As one of the most important staple crops, rice plays a central role in supplying the nutrients needed to keep the world population healthy. The nutritional value of rice crops is determined by the types and quantities of metabolites they contain, which are strongly affected by environmental and genetic factors. Understanding these factors is crucial to increasing nutritional value, but the complex relationship between genes and plant metabolism makes this a formidable challenge.

At the heart of this challenge are so-called quantitative train loci (QTL), stretches of DNA which contain or link to the genes for a phenotypic trait, in this case metabolite levels. To breed lines of rice which produce more of a specific metabolite (for example one that boosts its nutritional value), you have to know which DNA regions are involved and in what role. This is hard because metabolite levels are controlled by many different QTLs and also strongly influenced by the environment.

To solve this problem, researchers at the PSC teamed up with their collaborators at the National Institute of Agrobiological Science (NIAS) to analyze rice grain metabolomic QTL (mQTL) using state-of-the-art mass spectroscopy pipelines developed at the PSC. Analysis of 85 experimental lines of rice specially bred for QTL analysis, prepared by the NIAS researchers and harvested in 2005 and 2007, yielded a total of 759 metabolite signals. From these, the team identified 131 metabolites, including amino acids, lipids, and flavonoids, and identified a total of 801 mQTLs around the rice genome.

Most important of all, the team showed that while the levels of most metabolites they identified are influenced mainly by environmental factors, genetics can sometimes play a stronger role: coordinated control of amino acids was linked to an mQTL "hotspot" on chromosome 3, while variation of flavenoid levels was linked to genetic factors. Published in The Plant Journal, the findings promise a future of faster, more effective breeding techniques for rice, and mark a major step toward a healthier, better-fed world.


'/>"/>

Contact: RIKEN Global Relations Office
gro-pr@riken.jp
RIKEN
Source:Eurekalert  

Related biology news :

1. Study shows electron-beam irradiation reduces virus-related health risk in lettuce, spinach
2. A zap of cold plasma reduces harmful bacteria on raw chicken in Drexel study
3. Heat and cold damage corals in their own ways, Scripps study shows
4. Satellite study reveals critical habitat and corridors for worlds rarest gorilla
5. Body clock receptor linked to diabetes in new genetic study
6. Genetics study reveals how bacteria behind serious childhood disease evolve to evade vaccines
7. Study pinpoints genetic variation that raises a risk linked to bisphosphonates
8. UMass Amherst ecologists among the first to record and study deep-sea fish noises
9. Coastal storms have long-reaching effects, study says
10. Recent study by Mars, Incorporated and partners underscores importance of metabolism in understanding health benefits of cocoa flavanols
11. Pycnogenol (French maritime pine bark extract) shown to improve visible signs of aging in new study
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New study sheds light on genetics of rice metabolism
(Date:1/26/2017)... 2017  Crossmatch, a leading provider of security and ... at combatting fraud, waste and abuse in assistance operations ... Action on Disaster Relief conference in Panama ... agencies and foreign assistance organizations throughout Latin ... are a largely unacknowledged problem in the foreign assistance ...
(Date:1/25/2017)... , Jan. 25, 2017 The Elements of ... (IAM) lifecycle is comprised of a comprehensive set ... purpose of maintaining digital identities and providing a ... applications. There are significant number of programs opted ... to time by optimizing processes and changing policies. ...
(Date:1/24/2017)...  It sounds simple and harmless—an electronic sensor ... signs and alerts parents on their smart phones ... drops. But pediatric experts argue that such devices ... evidence of medical benefits, especially to healthy babies. ... parents of healthy babies, promising peace of mind ...
Breaking Biology News(10 mins):
(Date:2/16/2017)... ... February 16, 2017 , ... ... Inc. has further extended its industry leading Biochemistry Services specifically targeting the ... cGMP techniques and methods for the biochemical and biosimilar characterization , ...
(Date:2/15/2017)... , 15. Februar 2017  Trianni, Inc. ... Biotech, Inc. (Janssen) eine Lizenzvereinbarung über die Verwendung ... Klasse führenden Plattform für die Entdeckung monoklonaler Antikörper. ... ihr neuartiges chimäres Gensegmentdesign aus, das Janssen ... humanen Antikörpern bietet und das für die schelle ...
(Date:2/15/2017)... Windtree Therapeutics, Inc. (Nasdaq: ... aerosolized KL4 surfactant therapies for respiratory diseases, today ... private placement of convertible preferred stock units and ... fund its operations through the AEROSURF ® ... Windtree has received gross proceeds of ...
(Date:2/15/2017)... ... February 15, 2017 , ... ... partnership that puts Diameter Health technology in the hands of Lantana analysts. The ... exchanges, quality improvement and public health entities – all those mining value from ...
Breaking Biology Technology: