caa a22 4500 60550038X CHVBK 20210128100555.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s00253-014-6218-1 doi (NATIONALLICENCE)springer-10.1007/s00253-014-6218-1 Ammonium reduces chromium toxicity in the freshwater alga Chlorella vulgaris [Elektronische Daten] [Jingqing Liu, Zhengqi Sun, Michel Lavoie, Xiaoji Fan, Xiaocui Bai, Haifeng Qian] 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 100μM Cr at three different initial NH4 + concentrations (0.5, 3, and 10mM). The results showed that Cr strongly inhibited cell yield of C. vulgaris, but 10mM NH4 + could decrease by more than two-fold Cr toxicity on cell yield compared to exposure to 0.5mM 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. Springer-Verlag Berlin Heidelberg, 2014 Chromium nationallicence Nitrogen nationallicence Chlorella vulgaris nationallicence Gene transcript nationallicence Subcellular structure nationallicence Liu Jingqing College of Civil Engineering and Architecture, Zhejiang University, 310027, Hangzhou, People's Republic of China aut Sun Zhengqi College of Biological and Environmental Engineering, Zhejiang University of Technology, 310032, Hangzhou, People's Republic of China aut Lavoie Michel Quebec-Ocean and Takuvik Joint ULaval-CNRS International Research Unit, Université Laval, Québec, QC, Canada aut Fan Xiaoji College of Biological and Environmental Engineering, Zhejiang University of Technology, 310032, Hangzhou, People's Republic of China aut Bai Xiaocui College of Biological and Environmental Engineering, Zhejiang University of Technology, 310032, Hangzhou, People's Republic of China aut Qian Haifeng College of Biological and Environmental Engineering, Zhejiang University of Technology, 310032, Hangzhou, People's Republic of China aut Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/7(2015-04-01), 3249-3258 0175-7598 99:7<3249 2015 99 253 https://doi.org/10.1007/s00253-014-6218-1 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00253-014-6218-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Jingqing College of Civil Engineering and Architecture, Zhejiang University, 310027, Hangzhou, People's Republic of China aut NATIONALLICENCE 700 1- Sun Zhengqi College of Biological and Environmental Engineering, Zhejiang University of Technology, 310032, Hangzhou, People's Republic of China aut NATIONALLICENCE 700 1- Lavoie Michel Quebec-Ocean and Takuvik Joint ULaval-CNRS International Research Unit, Université Laval, Québec, QC, Canada aut NATIONALLICENCE 700 1- Fan Xiaoji College of Biological and Environmental Engineering, Zhejiang University of Technology, 310032, Hangzhou, People's Republic of China aut NATIONALLICENCE 700 1- Bai Xiaocui College of Biological and Environmental Engineering, Zhejiang University of Technology, 310032, Hangzhou, People's Republic of China aut NATIONALLICENCE 700 1- Qian Haifeng College of Biological and Environmental Engineering, Zhejiang University of Technology, 310032, Hangzhou, People's Republic of China aut NATIONALLICENCE 773 0- Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/7(2015-04-01), 3249-3258 0175-7598 99:7<3249 2015 99 253