| Registro completo |
| Provedor de dados: |
BJM
|
| País: |
Brazil
|
| Título: |
Screening of Trichoderma isolates for their potential of biosorption of nickel and cadmium
|
| Autores: |
Nongmaithem,Nabakishor
Roy,Ayon
Bhattacharya,Prateek Madhab
|
| Data: |
2016-06-01
|
| Ano: |
2016
|
| Palavras-chave: |
Heavy metals
Biosorption
Trichoderma
MIC50
Fungistasis
|
| Resumo: |
Abstract Fourteen Trichoderma isolates were evaluated for their tolerance to two heavy metals, nickel and cadmium. Three isolates, MT-4, UBT-18, and IBT-I, showed high levels of nickel tolerance, whereas MT-4, UBT-18, and IBT-II showed better tolerance of cadmium than the other isolates. Under nickel stress, biomass production increased up to a Ni concentration of 60 ppm in all strains but then decreased as the concentrations of nickel were further increased. Among the nickel-tolerant isolates, UBT-18 produced significantly higher biomass upon exposure to nickel (up to 150 ppm); however, the minimum concentration of nickel required to inhibit 50% of growth (MIC50) was highest in IBT-I. Among the cadmium-tolerant isolates, IBT-II showed both maximum biomass production and a maximum MIC50 value in cadmium stress. As the biomass of the Trichoderma isolates increased, a higher percentage of nickel removal was observed up to a concentration of 40 ppm, followed by an increase in residual nickel and a decrease in biomass production at higher nickel concentrations in the medium. The increase in cadmium concentrations resulted in a decrease in biomass production and positively correlated with an increase in residual cadmium in the culture broth. Nickel and cadmium stress also influenced the sensitivity of the Trichoderma isolates to soil fungistasis. Isolates IBT-I and UBT-18 were most tolerant to fungistasis under nickel and cadmium stress, respectively.
|
| Tipo: |
Info:eu-repo/semantics/article
|
| Idioma: |
Inglês
|
| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000200305
|
| Editor: |
Sociedade Brasileira de Microbiologia
|
| Relação: |
10.1016/j.bjm.2016.01.008
|
| Formato: |
text/html
|
| Fonte: |
Brazilian Journal of Microbiology v.47 n.2 2016
|
| Direitos: |
info:eu-repo/semantics/openAccess
|
|
