Isolation of Brazilian marine fungi capable of growing on DDD pesticide

Author(s)

Ortega, Scarlet Nere ^[1] ; Nitschke, Marcia ^[1] ; Mouad, Ana Maria ^[1] ; Landgraf, Maria Diva ^[1] ; Oliveira Rezende, Maria Olimpia ^[1] ; Regali Seleghim, Mirna Helena ^[2] ; Sette, Lara Duraes ^[3] ; Meleiro Porto, Andre Luiz ^[1]

Affiliation

^[1] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil

^[2] Univ Fed Sao Carlos, Dept Ecol & Biol Evolut, BR-13565905 Sao Carlos, SP - Brazil

^[3] Univ Estadual Campinas, Recursos Div Microbianos, CPQBA, BR-13140000 Paulinia, SP - Brazil

• Document type: Journal article
• Source: BIODEGRADATION; v. 22, n. 1, p. 43-50, FEB 2011.
• Web of Science Citations: 20

Abstract

The fungi Aspergillus sydowii Ce15, Aspergillus sydowii Ce19, Aspergillus sydowii Gc12, Bionectria sp. Ce5, Penicillium miczynskii Gc5, Penicillium raistrickii Ce16 and Trichoderma sp. Gc1, isolated from marine sponges Geodia corticostylifera and Chelonaplysylla erecta, were evaluated for their ability to grow in the presence of DDD pesticide. Increasing concentrations of DDD pesticide, i.e., 5.0 mg (1.56 x 10(-12) mmol), 10.0 mg (3.12 x 10(-2) mmol) and 15.0 mg (4.68 x 10(-2) mmol) in solid and liquid culture media were tested. The fungi Trichoderma sp. Gc1 and Penicillium miczynskii Gc5 were able to grow in the presence of up to 15.0 mg of DDD, suggesting their potential for biodegradation. A 100% degradation of DDD was attained in liquid culture medium when Trichoderma sp. Gc1 was previously cultivated for 5 days and supplemented with 5.0 mg of DDD in the presence of hydrogen peroxide. However, the quantitative analysis showed that DDD was accumulated on mycelium and biodegradation level reached a maximum value of 58% after 14 days. (AU)