L-arginine application triggered soil hydrolytic activity
Department of Soil Science, College of Agriculture, Isfahan University of Technology, Iran
Data nadesłania: 23-08-2022
Data ostatniej rewizji: 09-12-2022
Data akceptacji: 11-02-2023
Data publikacji online: 12-02-2023
Data publikacji: 19-05-2023
Autor do korespondencji
Sajedeh Khosrozadeh   

Department of Soil Science, College of Agriculture, Isfahan University of Technology, 84156-83111, Isfahan, Iran
Soil Sci. Ann., 2023, 74(1)161147
Application of amino acids to soils is reportedly associated with controversial responses in soil enzyme activities. The effects of L-arginine application on the fluorescein diacetate (FDA) hydrolysis and protease activity in an oak forest soil was investigated. The FDA hydrolysis and protease activity were regularly measured over a standard incubation period. The addition of L-arginine increased both FDA hydrolysis and protease activity after a lag time of 10 days. After 30 days, the ratio of FDA hydrolysis and protease activity in L-arginine-amended soil samples to those in the control reached 2.0 and 3.7, respectively. Moreover, FDA hydrolysis was found significantly (r = 0.67, P < 0.05) correlated with protease activity. It was concluded that L-arginine was able to stimulate FDA hydrolysis and protease activity, thereby making the soil hydrolytic system capable of facing more complicated substrates.
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