We've updated our Privacy Policy to make it clearer how we use your personal data.

We use cookies to provide you with a better experience, read our Cookie Policy

Evolution and Selection of Soybean Nematode Resistance Locus

Video   Feb 16, 2015

 

We have shown that theRhg1 locus is a multi-gene repeat of non-canonical resistance genes in strict tandem formation. Using whole-genome sequencing and PCR assays, we show that different soybean germplasm accessions contain one to 10 copies of a tandemly duplicated unit of 31.2 kb. The individual repeated units were classified into four types by using haplotype phasing techniques, with some Rhg1 loci carrying up to three different types of repeat unit. The Rhg1 locus shows strong signatures of selection and significant linkage disequilibrium in the genome around the boundaries of the repeat within a large population of over 15,000 accessions. The regions surrounding the repeat show indications of non-neutral evolution and high genetic variability in populations from different geographic locations. The linkage disequilibrium around the Rhg1 repeat in accessions carrying different repeat types allows the Rhg1 genotype of germplasm accessions to be inferred using large public SNP array datasets, revealing over 800 new potential sources of resistance.

 
 
 
 

Recommended Videos

Cell Fates - Division, Senescence and Death

Video

In this video, learn about the fates of a cell.

WATCH NOW

Invitrogen™ Collibri™ NGS Library Preparation Kits for Illumina™ Systems

Video

Watch the benefits of visual feedback at each step in the protocol. The colored dyes indicate proper addition and mixing of reagents with the Invitrogen Collibri DNA library preparation kits for Illumina systems.

WATCH NOW

Genes in the Environment

Video

Under the influence of longer-term climate change, crop growing conditions are becoming more extreme.

WATCH NOW

 

Like what you just watched? You can find similar content on the communities below.

Genomics Research

To personalize the content you see on Technology Networks homepage, Log In or Subscribe for Free

LOGIN SUBSCRIBE FOR FREE