Genomic Studies Shed Light on Maize Diversity and EvolutionJune 8, 2012
BGI, the world's largest genomics organization located in Shenzhen, China, together with 17 international institutes (Cold Spring Harbor Laboratory, University of California Davis, Cornell University, and the International Maize and Wheat Improvement Center (CIMMYT), among others), announced that they completed the second generation of maize HapMap (Maize HapMap2) and genomics studies on maize domestication and improvement. The two separate studies were published online in the same issue of Nature Genetics on June 4, 2012.
The studies mark an important milestone in maize (Zea mays) genomics research, which will provide valuable insights for botanists and breeders worldwide and facilitate the genetic engineering of this vital cereal crop in the world. In the study Generation of maize HapMap2 identifies extant variation from a genome in flux, researchers developed a novel population-genetics scoring model for comprehensively characterizing the genetic variations and found that structural variations (SVs) were prevalent throughout the maize genome and were associated with some important agronomic traits, such as those involved in leaf development and disease resistance. Major factors that influence the maize genome size were also investigated. The results showed that the intra-species genome size variation is influenced by the DNA structure known as chromosomal knobs.
In the other study Comparative population genomics of maize domestication and improvement, researchers comprehensively traced maize's evolution process by comparative population genomics analysis. The results showed that new genetic diversity has arisen since domestication, maybe due to the introgression from wild relatives. More importantly, the results demonstrated that the selection applied by ancient farmers seemed to play a stronger impact on maize evolution than the breeding techniques adopted by modern breeders.
See the original news in Chinese at http://www.genomics.cn/news/show_news?nid=99074.
Biotech Updates is a weekly newsletter of ISAAA, a not-for-profit organization. It is distributed for free to over 22,000 subscribers worldwide to inform them about the key developments in biosciences, especially in biotechnology. Your support will help us in our mission to feed the world with knowledge. You can help by donating as little as $10.
See more articles:
News from Around the World
- Consortium Releases Pear Genome Data
- DNA Discovery Key to Drought Resistant Crops
- Genomic Studies Shed Light on Maize Diversity and Evolution
- Plant Research Funding Crucial for the Future
- G8 Outcomes – Will the Private Sector Undermine Africa's Smallholder Farmers?
- Burkina Faso to Continue Growing Bt Cotton
- Genetic Sequence and Map of Foxtail Millet Released
- Oil Production Mechanism in Plants Identified
- CLC bio, Donald Danfort Plant Science Center Partner for Cassava for Africa Project
- US Environmental Assessment for GE Eucalyptus Hybrid Field Release Available
- One Sample Testing Program Receives USDA-RMA Continuation Approval
- BASF: Farmers Will See the Value of Drought Tolerant Corn
- Scientists Develop First Genetically Modified Miscanthus
- BKS Study Confirms Benefits of Bt Cotton to Indian Small Farmers
- Australian Scientist to be Awarded Farrer Memorial Medal
- GRDC Calls for Insecticide Resistance Grassroots Input
- ICG Europe Tackles Plant, Animal and Human Genomics
- NUE Efficient Sugar Beets Field Test Results Released
- Nobel Awardee Expresses Views on GM
- Bayer CropScience Opens Wheat Breeding Center in Germany
- Bt Cry and Cyt Mutants for Overcoming Insect Resistance
- Over-expression of CYCD2;1 Improves Banana Root Growth
- Study Shows How Oleic Acid Regulates Nitric Oxide Production
Beyond Crop Biotech
- Vegetables: Less Visible, but Vital for Human Health
- Embrapa Improves Microbial Collection
- Study Shows Parasitic Flower Share More Genes from Its Host
- 11th International Conference on Bioinformatics, Bangkok
- PK 40 Biotechnology for the Livestock Industry
- The Benefits of Herbicide-Resistant Crops
Read the latest:
- Biotech Updates (November 29, 2023)
- Gene Editing Supplement (November 29, 2023)
- Gene Drive Supplement (February 22, 2023)
Subscribe to BU: