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PLoS One. 2017 Sep 25;12(9):e0185230. doi: 10.1371/journal.pone.0185230. eCollection 2017.

Urea application promotes amino acid metabolism and membrane lipid peroxidation in Azolla.

Author information

1
Southern Regional Collaborative Innovation Center for Grain and Oil Crops (CICGO), Hunan Agricultural University, Changsha, China.
2
Department of Environmental Studies, University of Delhi, Delhi, India.

Abstract

A pot experiment was conducted to evaluate the effect of urea on nitrogen metabolism and membrane lipid peroxidation in Azolla pinnata. Compared to controls, the application of urea to A. pinnata resulted in a 44% decrease in nitrogenase activity, no significant change in glutamine synthetase activity, 660% higher glutamic-pyruvic transaminase, 39% increase in free amino acid levels, 22% increase in malondialdehyde levels, 21% increase in Na+/K+- levels, 16% increase in Ca2+/Mg2+-ATPase levels, and 11% decrease in superoxide dismutase activity. In terms of H2O2 detoxifying enzymes, peroxidase activity did not change and catalase activity increased by 64% in urea-treated A. pinnata. These findings suggest that urea application promotes amino acid metabolism and membrane lipid peroxidation in A. pinnata.

PMID:
28945775
PMCID:
PMC5612470
DOI:
10.1371/journal.pone.0185230
[Indexed for MEDLINE]
Free PMC Article

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