Data/hora: 10/06/2024 17:12:44

Provedor de dados: | 90
País: | Brazil
Título: | Kinetic parameters of soil β-glucosidase response to environmental temperature and moisture regimes
Autores: | Zhang,Yulan; Chen,Lijun; Wu,Zhijie; Sun,Caixia.
Data: | 2011-08-01
Ano: | 2011
Palavras-chave: | Enzymatic kinetic; Soil moisture; Cellulose biodegradation.
Resumo: | Soil β-glucosidase participates in the final step of cellulose biodegradation. It is significant in the soil C cycle and is used as an indicator of the biological fertility of soil. However, the response of its kinetic parameters to environmental temperature and moisture regimes is not well understood. This study tested the β-glucosidase response in the main agricultural soils (black soil, albic soil, brown soil, and cinnamon soil) of Northeast China. Incubation tests were conducted to measure the kinetic parameters Km, Vmax or Vmax/Km of soil β-glucosidase at environmental temperatures of 10, 20 and 30 ºC and at 10, 20 and 30 % soil moisture content. The insensitive response of the kinetic parameters to temperature changes indicates that soil β-glucosidase was present primarily in immobilized form. The significant response of the kinetic parameters of soil β-glucosidase to soil moisture rather than to environmental temperatures suggests that the catalytic ability of soil β-glucosidase was sensitive to changing soil moisture regimes.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000400022
Editor: | Sociedade Brasileira de Ciência do Solo
Relação: | 10.1590/S0100-06832011000400022
Formato: | text/html
Fonte: | Revista Brasileira de Ciência do Solo  v.35 n.4 2011
Fonte: | info:eu-repo/semantics/openAccess