AtPCS1	Arabidopsis thaliana Phytochelatin Synthase 1
BLAST	Basic Local Alignment Search Tool
CDS	coding DNA sequence
Cr(VI)	hexavalent chromium
Cr-t	chromium-tolerant strain
Cys	cysteine
GSH	glutathione
HM	heavy metal
LOEC	lowest observed effect concentration
PC	phytochelatin
PCS	phytochelatin synthase
PTC	premature termination codon
ROS	reactive oxygen species
RT-qPCR	Real-Time quantitative polymerase chain reaction
S	sulfur
SaPCS	Scenedesmus acutus phytochelatin synthase
SaPCSa/SaPCSb/SaPCSc	alternatively spliced SaPCS transcript variants
TIS	translation initiation site
UTR	untranslated region
wt	wild-type