Phenotypic changes in microalgae at acidic pH mediate their tolerance to higher concentrations of transition metals.

ABSTRACT: Acclimatory phenotypic response is a common phenomenon in microalgae, particularly during heavy metal stress. It is not clear so far whether acclimating to one abiotic stressor can alleviate the stress imposed by another abiotic factor. The intent of the present study was to demonstrate the implication of acidic pH in effecting phenotypic changes that facilitate microalgal tolerance to biologically excess concentrations of heavy metals. Two microalgal strains, Desmodesmus sp. MAS1 and Heterochlorella sp. MAS3, were exposed to biologically excess concentrations of Cu (0.50 and 1.0 mg L^‒1), Fe (5 and 10 mg L^‒1), Mn (5 and 10 mg L^‒1) and Zn (2, 5 and 10 mg L^‒1) supplemented to the culture medium at pH 3.5 and 6.7. Chlorophyll autofluor

SUBMITTER: Abinandan S 

PROVIDER: S-EPMC8714768 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature