Background:

Rhodamine B is a staining fluorescent dye, commonly used for dyeing textiles, paper, soap, leather, and drugs.

Rhodamine B induces a concentration-dependent reduction of root meristem cells of A. cepa. mitotic activity. Rhodamine B induces various nuclear aberrations in A. cepa. root cells. In the 100 and 200 ppm rhodamine B groups, the frequencies of NBUDs and BN surpass those of the positive control (MMS) group. Rhodamine B-induced changes of H2O2 (a) and MDA (b) level increase in a concentration-dependent manner in A. cepa. roots[1].

[1]. Tan D, et al. Rhodamine B induces long nucleoplasmic bridges and other nuclear anomalies in Allium cepa root tip cells. Environ Sci Pollut Res Int. 2014 Mar;21(5):3363-70.