North American Fruit Explorers mailing list at ibiblio

[Elizabeth Hilborn <ehilborn@mebtel.net>]

They are apparently transgenic with a wheat oxalate oxidase gene which 
renders the trees resistant to fungal-associated pathology. They make 
the point that these new trees have more American Chestnut genetic 
material than the complex hybrids such as Dunstan.

It will be interesting to see how the trials go...

http://www.sciencedaily.com/releases/2014/11/141106082032.htm