Sodium chloride decreases cadmium accumulation and changes the response of metabolites to cadmium stress in the halophyte Carpobrotus rossii.

ABSTRACT:

Background and aims

Salinity affects the bioavailability of cadmium (Cd) in soils and Cd accumulation in plants, but the associated mechanisms remain unclear. This study aimed to assess the metabolic response to NaCl and Cd and the relationship between metabolites and Cd accumulation in the halophyte Carpobrotus rossii, which has potential for Cd phytoextraction.

Methods

Plants were grown in nutrient solution with 0-400 mm NaCl in the presence of 5 or 15 µm Cd, with varied or constant solution Cd2+ activity. Plant growth and Cd uptake were measured, and the accumulation of peptides, and organic and amino acids in plant tissues were assessed.

Key results

The addition of NaCl to Cd-containing solutions improved plant growth along with 70-87 % less shoot Cd accumulation,

SUBMITTER: Cheng M 

PROVIDER: S-EPMC6110342 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature