@article{oai:soar-ir.repo.nii.ac.jp:00020038,
 author = {Fujita, Kazuki and Kunito, Takashi and Matsushita, Junko and Nakamura, Kaori and Moro, Hitoshi and Yoshida, Seishi and Toda, Hideshige and Otsuka, Shigeto and Nagaoka, Kazunari},
 issue = {8},
 journal = {PLOS ONE},
 month = {Aug},
 note = {Although microorganisms will preferentially allocate resources to synthesis of nitrogen (N)-acquiring enzymes when soil N availability is low according to the resource allocation model for extracellular enzyme synthesis, a robust link between microbial N-acquiring enzyme activity and soil N concentration has not been reported. To verify this link, we measured several indices of soil N availability and enzyme activity of four N-acquiring enzymes [N-acetyl-beta-glucosaminidase (NAG), protease (PR), urease (UR), and L-asparaginase (LA)] and a carbon (C)-acquiring enzyme [beta-D-glucosidase (BG)] in arable and forest soils. Although the ratios of NAG/BG and PR/BG were not significantly related with indices of soil N availability, ratios of LA/BG and UR/BG were strongly and negatively related with potentially mineralizable N estimated by aerobic incubation but not with pools of labile inorganic N and organic N. These results suggest that microorganisms might allocate their resources to LA and UR synthesis in response to N supply rate rather than the size of the easily available N pools. It was also suggested that the underlying mechanism for synthesis was different between these N-acquiring enzymes in soil microorganisms: microbial LA and UR were primarily synthesized to acquire N, whereas NAG and PR syntheses were regulated not only by N availability but also by other factors., Article, PLOS ONE. 13(8):e0202086 (2018)},
 title = {Nitrogen supply rate regulates microbial resource allocation for synthesis of nitrogen-acquiring enzymes},
 volume = {13},
 year = {2018}
}