The Editors of Plant Biotechnology Reports and the publisher hereby retract the article entitled "T1 transgenic tobacco plants carrying multicopy T-DNAs at the same locus exhibit various expression levels of transgenes" by Min SR, Davarpanah SJ, Park YI, Jeon JH, Moon JS, Liu JR and Jeong WJ, which appeared in the Online First version of Plant Biotech Rep because the authors submitted the article without the permission of the owner of a gene that was mentioned in the article.