Acclimation and adaptation to elevated pCO₂ increase arsenic resilience in marine diatoms.

ABSTRACT: Arsenic pollution is a widespread threat to marine life, but the ongoing rise pCO₂ levels is predicted to decrease bio-toxicity of arsenic. However, the effects of arsenic toxicity on marine primary producers under elevated pCO₂ are not well characterized. Here, we studied the effects of arsenic toxicity in three globally distributed diatom species (Phaeodactylum tricornutum, Thalassiosira pseudonana, and Chaetoceros mulleri) after short-term acclimation (ST, 30 days), medium-term exposure (MT, 750 days), and long-term (LT, 1460 days) selection under ambient (400 µatm) and elevated (1000 and 2000 µatm) pCO₂. We found that elevated pCO₂ alleviated arsenic toxicity even after short acclimation times but the magnitude of the response decreased after

SUBMITTER: Xu D 

PROVIDER: S-EPMC8163839 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature