Untangling
the genetic
legacy of tomato domestication
Cell Press
Tomatoes have come a
long way from their origins as pea-sized berries due to humans breeding tomato
plants to produce bigger fruit.
However, favorable
mutations that went along with increased fruit size and other beneficial traits
do not always play well together.
A study published in Cell on
May 18 found that natural mutations in two important tomato genes that were
selected for different purposes in breeding can cause extreme branching and
reduce fruit yield when they occur in the same plant.
However, the
researchers have found a way to use those genes to create an improved tomato
plant that grows a larger number of tomatoes.
One of the two genes
is ancient, dating back to when Native Americans in South and Central America
domesticated the tomato plant more than 8,000 years ago.




