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Crop Biotech Update

Scientists Look Closer on Evolution of Plant's Self-fertilization

June 26, 2013

The US Department of Energy Joint Genome Institute has sequenced and compared the genome of Capsella rubella with Capsella grandiflora and members of the closely related Arabidopsis genus to have a better understanding of the effects of selfing of C. rubella's genome.

The study, which was published in the June 9 edition of Nature Genetics revealed that C. rubella showed a mass decline of the removal of harmful mutations without a naturally occurring alteration in the amount of genes present that can move between chromosomes. From these findings, it is theorized that a dramatic event left C. rubella in a situation where a need for pollinators outweighed the known negatives of inbreeding and caused the C. rubella to shift into selfing. Though this caused the C. rubella to face a bottleneck, its ancestral genome structure remained intact.

For more information, visit http://jginews.blogspot.com/2013/06/doe-jgi-science-highlights-capsella.html. To access the full journal article, go to http://www.nature.com/ng/journal/vaop/ncurrent/full/ng.2669.html.