Scientists: now acquire a new strawberry flavor


28/12/2010

About 50 years ago, when consumers have replaced local markets for groceries, we found that strawberries had lost its distinctive bright flavor. Now, researchers report that the newly streamlined genome of wild strawberry, relatives of cultivated berries, berry can help bring back the rich taste and aroma.

"As a rule, the strawberries are grown, focusing mainly on the resistance of plants to disease, to obtain a certain hardness and size of the product, without taking into account the taste, sweetness and other dining options fruit" - said Kevin Falt, a professor of horticulture at the University of Florida. Because of this trend, strawberries become more watery and he lost a taste that people remember from their childhood.

The distinguishing characteristic taste and appearance that we associate with strawberries, are the result of substances produced in the berries and sugar content, acidity and color. Research has begun to unlock the genetic amplifiers fruit and having access to the genetic code of wild strawberries will accelerate things.

Strawberries are grown only relatively recently, about 250 years ago. Wild strawberry, Fragaria vesca, has been found throughout the Northern Hemisphere, and it was already present in European gardens when researchers began to collide with other species in the New World. In the 1700s, a French spy named Captain Amedee Frezer brought Chilean strawberries, yet it brought a new plant gave a small crop, according to information from the book "Moderate Fruit Breeding: Germplasm to Genomics of" James Hancock (Spring, 2010).

However, when the strawberries were crossed with berries imported from North America, contributed to the development of the modern variety. These hybrids have spread across Europe, including the Palace of Versailles, where he operates a botanist Antoine Nicolas Duchesne. He identified this hybrid, and the evaluation and description of the new variety of strawberry-flavored like pineapple named it Fragaria x ananassa. This is - the same version that is on the shelves of grocery stores today.

While the wild growing strawberries, like forest strawberries, has a small genome, others have more complex genomes, including cultivated strawberries. In fact, the cultivated strawberry is one of the most genetically complex grown plants, according to researchers, streamlined genome.

The genetic sequence will also be of great value to other economically important plants, like peaches, almonds, apples, raspberries, blackberries and other types of families that own strawberries. Species of this family of genes is similar.

But compared with other fruit, strawberries occupies a small space and has a short period of development and maturation, thus being more suitable model for experimentation. The project was initiated to streamline genetic in Virginia Polytechnic Institute, where researchers have carried out similar experiments with this genetic variant of strawberries. Streamlining were no national subsidies. Instead, the provision came directly from research institutions and the strawberry industry. Most scientists, according to Fawlty coordinator, sacrificed their own time to do research. An article describing the project was published in the online version of the journal Nature Genetics. Experts in the field of genomics hope that the example of the strawberry genome will be possible to arrange for the production of cocoa varieties of fine chocolates.

Original: LiveScience Translation: M. Potter


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