Impact of Pb on Chlamydomonas reinhardtii at Physiological and Transcriptional Levels

Frontiers in Microbiology
Canqi ZhengPing Li

Abstract

Trace elements stress is one of the most damaging abiotic stresses in environment. Nevertheless, the defense mechanism in microalgae remains poorly understood. In this study, physiological and molecular methods were performed to analyze the defense responses in green alga Chlamydomonas reinhardtii. It was speculated that the defense responses might mainly be due to the regulation of hormone signaling, indicating its potential role in alleviating the Pb toxicity besides other physiological and molecular defense responses like decrease in growth rate, chlorophyll content and photosynthesis efficiency, intensification of antioxidative mechanisms, regulation of transcription factors, trace elements chelation, and sequestration into vacuole via trace elements transporters. The sole differentially expressed ATP-binding cassette (ABC) transporters indicated that ABC transporters might play a very important role in the transport and relocation of Pb in C. reinhardtii. Additionally, our data provide the required knowledge for future investigations regarding Pb toxicity and defense mechanisms in algae, and detection of trace elements pollution in environment.

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Citations

Jun 6, 2021·Environmental Pollution·Shweta Tripathi, Krishna Mohan Poluri
Jun 28, 2021·Environmental Pollution·Elise MorelKevin J Wilkinson
Nov 2, 2021·Journal of Basic Microbiology·Arumugam ManikandanJeyaseelan Aravind

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Datasets Mentioned

BETA
SRR10269730
SRR10269727
SRR10269728
SRR10269731
SRR10269732

Methods Mentioned

BETA
Assay
PCR
MDA
RNA-seq
environmental stresses

Software Mentioned

Water
R package
DEGseq
SPSS
edgeR
KOBAS
GOseq R

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