NDLI: Ammonium reduces chromium toxicity in the freshwater alga Chlorella vulgaris

Content Provider	Springer Nature Link
Author	Liu, Jingqing Sun, Zhengqi Lavoie, Michel Fan, Xiaoji Bai, Xiaocui Qian, Haifeng
Copyright Year	2014
Abstract	The aim of the present study was to investigate the protective effect of ammonium (NH4 +) on Cr toxicity to the freshwater alga Chlorella vulgaris. We followed an array of cellular functions and biomolecules in C. vulgaris cells exposed to 50 or 100 μM Cr at three different initial NH4 + concentrations (0.5, 3, and 10 mM). The results showed that Cr strongly inhibited cell yield of C. vulgaris, but 10 mM NH4 + could decrease by more than two-fold Cr toxicity on cell yield compared to exposure to 0.5 mM NH4 +. Cr toxicity on gene transcripts and cellular substructure was also much lower at high than at low NH4 +. Our results suggest that this protecting effect of NH4 + on intracellular Cr toxicity could be due to several factors, such as enhance uptake of phosphorus, increase in C and N assimilation efficiency, and increase transcription of photosynthesis-related genes.
Starting Page	3249
Ending Page	3258
Page Count	10
File Format	PDF
ISSN	01757598
Journal	Applied Microbiology and Biotechnology
Volume Number	99
Issue Number	7
e-ISSN	14320614
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-11-26
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Chromium Nitrogen Chlorella vulgaris Gene transcript Subcellular structure Microbiology Microbial Genetics and Genomics Biotechnology
Content Type	Text
Resource Type	Article
Subject	Medicine Applied Microbiology and Biotechnology Biotechnology

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