Scientists developed a variety of transgenic sugarcane expressing two Bt
proteins to provide resistance against sugarcane borer. Their findings are
published in Tropical Plant Biology.
One of the major pests of sugarcane in the Americas is sugarcane borer
(Diatraea saccharalis). In 2017, Brazil's Comiss?o TÚcnica Nacional de
Biosseguranša approved the commercial use of Bt sugarcane expressing one Bt
protein (Cry1Ab) developed by Centro de Tecnologia Canavieira (CTC). In a
study conducted by Monsanto Brazil researchers, two Bt proteins (Cry1Ab and
Cry2Ab) with different modes of action were expressed in sugarcane to
maximize protection against sugarcane borer. They also setup a large refuge
in addition to the use of a selection marker that added the glyphosate
tolerance trait to a final event.
Based on the results, it was demonstrated that it is possible to use Bt
proteins to provide improved protection against sugarcane borer attacks.