CORVALLIS, Ore. Researchers at Oregon State University have helped sequence the genome of a wild strawberry, laying the groundwork for genetic improvements to related fruits like apples, peaches and pears.
The advance was published today in the journal Nature Genetics.
"This will accelerate research that will lead to improved crops, particularly commercial strawberries," said OSU plant molecular biologist Todd Mockler, one of the lead researchers. "It could lead to fruit that resists pests, smells better, tolerates heat, requires less fertilizer, has a longer shelf life, tastes better or has an improved appearance."
An international team of more than 70 researchers, 13 of whom are at OSU, identified 34,809 genes on the seven chromosomes in the woodland strawberry known as Fragaria vesca.
They chose the diminutive perennial because it's commonly used in research, is easy to breed, grows quickly and has a small genome. Additionally, it shares a substantial number of genes with apples, peaches, cherries, plums, and commercially cultivated strawberries a crop that generated $12.9 million in gross sales for Oregon's farmers in 2009, according to a report by the OSU Extension Service.
As part of their findings, the scientists identified genes that they think might be responsible for some of the berry's characteristics like flavor, aroma, nutritional value, flowering time and response to disease. Knowing what individual genes do will allow researchers to breed crops for those specific traits. And in the case of tree fruits, they won't have to wait years to see if those traits actually show up in the fruit. For example, with molecular breeding they would be able to cross a high-yielding pear tree with one that resists a certain fungal disease, and they'd be certain that the desired genes are actually present.
The woodland strawberry is the smallest plant genome to be sequenced other than Arabidopsis tha
|Contact: Todd Mockler|
Oregon State University