Soybean cyst nematode (SCN) does hundreds of millions of dollars’ worth of damage each year. Matt Hudson and Brian Diers, crop sciences researchers at the University of Illinois and Andrew Bent at the University of Wisconsin, think they may have found a way to strengthen plant resistance. The research has just been published in Science Express.
Diers and Hudson, with researchers at Wisconsin and the University of Nebraska, have been studying an area on chromosome 18 called Rhg1 (Resistance to H. glycines) that is known to be the location of the main source of SCN resistance. Rhg1 disrupts the formation and maintenance of potential nematode-feeding sites on plant roots.
Most SCN-resistant soybeans in the Midwest are bred to contain Rhg1, but no one knew the DNA sequence of the gene that was responsible for the resistance. Diers wanted to find it.
“You could say it’s a billion-dollar gene because it’s in many varieties, it’s widely used, and it’s protecting varieties against these nematodes,” he said.… Continue readingRead More »