Crop Biotech Update

Effect of Bt Corn on Non-target Microorganism

October 14, 2011

Fengxiao Tan from the South China Agricultural University together and a team of scientists conducted a study to assess the effects of Bt corn (Bt11 and MON810) on the community structure of the non-target microorganism known as Glomus, which is an arbuscular mycorrhizal fungus (AMF) .

Through microscopic visualization, no significant differences were found in the colonization of AMF in the Bt corn roots when compared with the non-Bt lines. Further analyses (TWINSPAN and detrended correspondence analysis) of the roots revealed differences between Bt and non-Bt isolines. However, differences were also found among the non-Bt corn cultivars. The researchers concluded that the corn genotypes have greater effect on the AMF community than the age of the growing plants.