Corporate Banner
Satellite Banner
AgriGenomics
Scientific Community
 
Become a Member | Sign in
Home>News>This Article
  News
Return

Detailed Analysis of DNA Markers in Peanut Published

Published: Friday, July 20, 2012
Last Updated: Friday, July 20, 2012
Bookmark and Share
Tuskegee University scientists have published a comprehensive database of DNA markers in peanut drawing from the published literature and validated them through computational and lab studies. The assembled polymorphic SSRs would enhance the density of the existing genetic maps of peanut, which could also be a useful source of DNA markers suitable for high-throughput QTL mapping and marker-assisted selection in peanut improvement and is of value to peanut breeders.

Characterization and compilation of polymorphic simple sequence repeat (SSR) markers of peanut from public database

Yongli Zhao, C. S. Prakash and Guohao He; BMC Research Notes 2012, 5:362 doi:10.1186/1756-0500-5-362 ; Published: 20 July 2012

 There are several reports describing thousands of SSR markers in the peanut (Arachis hypogaea L.) genome. There is a need to integrate various research reports of peanut DNA polymorphism into a single platform. Further, because of lack of uniformity in the labeling of these markers across the publications, there is some confusion on the identities of many markers. 

We describe below an effort to develop a central comprehensive database of polymorphic SSR markers in peanut. Findings We compiled 1,343 SSR markers as detecting polymorphism (14.5%) within a total of 9,274 markers. Amongst all polymorphic SSRs examined, we found that AG motif (36.5%) was the most abundant followed by AAG (12.1%), AAT (10.9%), and AT (10.3%).The mean length of SSR repeats in dinucleotide SSRs was significantly longer than that in trinucleotide SSRs. 

Dinucleotide SSRs showed higher polymorphism frequency for genomic SSRs when compared to trinucleotide SSRs, while for EST-SSRs, the frequency of polymorphic SSRs was higher in trinucleotide SSRs than in dinucleotide SSRs. The correlation of the length of SSR and the frequency of polymorphism revealed that the frequency of polymorphism was decreased as motif repeat number increased.

The assembled polymorphic SSRs would enhance the density of the existing genetic maps of peanut, which could also be a useful source of DNA markers suitable for high-throughput QTL mapping and marker-assisted selection in peanut improvement and thus would be of value to breeders.


Further Information

Join For Free

Access to this exclusive content is for Technology Networks Premium members only.

Join Technology Networks Premium for free access to:

  • Exclusive articles
  • Presentations from international conferences
  • Over 3,500+ scientific posters on ePosters
  • More than 5,000+ scientific videos on LabTube
  • 35 community eNewsletters


Sign In



Forgotten your details? Click Here
If you are not a member you can join here

*Please note: By logging into TechnologyNetworks.com you agree to accept the use of cookies. To find out more about the cookies we use and how to delete them, see our privacy policy.


Scientific News
Modified Yeast Shows Plant Response to Key Hormone
Researchers have developed a toolkit based on modified yeast to determine plant responses to auxin.
New Discovery May Benefit Farmers Worldwide
Scientists have shown how a crop-microbe 'team' protect against fungal infection.
Antibiotic Resistance Can Occur Naturally in Soil Bacteria
Scientists have found natural anti-biotic resistant bacteria in soils with little to no human exposure.
Regulatory RNA Essential to DNA Damage Response
Researchers discover a tumour suppressor is stabilized by an RNA molecule, which helps cells respond to DNA damage.
Potential of New Insect Control Traits in Agriculture
Researchers have discovered a protein that shows promise as an alternate corn rootworm control mechanism.
Improving Crop Efficiency with CRISPR
New study of CRISPR-Cas9 technology from Virginia Tech shows potential to improve crop efficiency.
Gene Could Reduce Female Mosquitoes
Virginia Tech researchers have found a gene that can reduce female mosquitoes over many generations.
Fighting Plant Pathogens with RNA
Researchers develop strategy that could lead to environmentally friendly fungicide to fight pathogens.
Breakthrough in Plant Salt-Tolerance Research
Researchers have made a breakthrough in plant salt tolerance that could lead to new salt tollerant crop types.
Microbes Help Plants Survive In Severe Drought
Researchers discover plants survive better under drought conditions with help from natural microbes.
SELECTBIO

SELECTBIO Market Reports
Go to LabTube
Go to eposters
 
Access to the latest scientific news
Exclusive articles
Upload and share your posters on ePosters
Latest presentations and webinars
View a library of 1,800+ scientific and medical posters
3,500+ scientific and medical posters
A library of 2,500+ scientific videos on LabTube
5,000+ scientific videos
Close
Premium CrownJOIN TECHNOLOGY NETWORKS PREMIUM FOR FREE!