Overexpression of AtPCS1 in tobacco increases arsenic and arsenic plus cadmium accumulation and detoxification.

ABSTRACT:

Main conclusion

The heterologous expression of AtPCS1 in tobacco plants exposed to arsenic plus cadmium enhances phytochelatin levels, root As/Cd accumulation and pollutants detoxification, but does not prevent root cyto-histological damages. High phytochelatin (PC) levels may be involved in accumulation and detoxification of both cadmium (Cd) and arsenic (As) in numerous plants. Although polluted environments are frequently characterized by As and Cd coexistence, how increased PC levels affect the adaptation of the entire plant and the response of its cells/tissues to a combined contamination by As and Cd needs investigation. Consequently, we analyzed tobacco seedlings overexpressing Arabidopsis phytochelatin synthase1 gene (AtPCS1) exposed to As and/or Cd, to evaluate the levels

SUBMITTER: Zanella L 

PROVIDER: S-EPMC4757632 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature