LI MENG1, LIU TONGXIANG2, SUN YING1, et al. Effects of Mercury on the POD Activity and Lignin Content during the Growth of Daucus corota var.sativa Callus. [J]. 2007, (2): 239-243.
LI MENG1, LIU TONGXIANG2, SUN YING1, et al. Effects of Mercury on the POD Activity and Lignin Content during the Growth of Daucus corota var.sativa Callus. [J]. 2007, (2): 239-243.DOI:
Treatments with different Hg2+ concentration led to reduction in the carrot callus growth
and callus growth rate correlated negatively with Hg2+ concentration added.Histochemically
the results indicated that POD activity increased with the growth rate of callus within the same tissue;and lignin deposit density within the cell wall increased with the growth of callus over time
displaying a trend similar to POD activity alteration upon Hg2+ imposition;Furthermore
more tracheary elements was observed in the callus tissue subjected to Hg2+ than that in control.From these above data
it could be inferred that POD-promoted biosynthesis of lignin might account for the inhibition on callus differentiation by Hg2+ treatment.