Virtual Poster, Presentation Summary Australian Freshwater Sciences Society Conference 2018

Amino acids profile in tropical Chlorella sp. 12 responding to copper stress (#119)

Manisha Shakya 1 , Aleicia Dr Holland 1 , Gavin Dr Rees 2 , Ewen Dr Silvester 1
  1. Department of Ecology, Environment and Evolution, La Trobe University, Wodonga, Victoria, Australia
  2. CSIRO Land and Water, and Institute of Land Water and Society, Charles Sturt University, Thurgoona, NSW, Australia

The effects of Cu on the growth rate and amino acids profile of Chlorella sp. were determined in 72 hrs exposure experiments at Cu concentrations over the range 1 – 10 µg/L. The Cu concentration required to inhibit algal growth rate by 10 % (EC10) and 50 % (EC50) was found to be 1.0 ± 0.1 µg/L and 2.0 ± 0.1 µg/L respectively. Copper stress caused a significant change in the amino acid profile of Chlorella sp. compared to the controls with an increase in amino acids like Lysine, Alanine and Glycine.