Arsenic volatilization by Aspergillus sp. and Penicillium sp. isolated from rice rhizosphere as a promising eco-safe tool for arsenic mitigation

Autor(es)

Soares Guimaraes, Leandro Henrique ^[1] ; Segura, Fabiana Roberta ^[1] ; Tonani, Ludmilla ^[2] ; von-Zeska-Kress, Marcia Regina ^[2] ; Rodrigues, Jairo Lisboa ^[3] ; Calixto, Leandro Augusto ^[4] ; Silva, Fabio Ferreira ^[1] ; Batista, Bruno Lemos ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed ABC, Ctr Ciencias Nat & Humanas, Ave Estados 5001, Bloco A 607-3, BR-09210580 Santo Andre, SP - Brazil

^[2] Univ Sao Paulo, Fac Ciencias Farmaceut Ribeirao Preto, Ave Cafe S-N, BR-14040903 Ribeirao Preto, SP - Brazil

^[3] Univ Fed Vales Jequitinhona & Mucuri, Inst Ciencia Engn & Tecnol, Rua Cruzeiro 01, BR-39803371 Teofilo Otoni, MG - Brazil

^[4] Univ Fed Sao Paulo, Inst Ciencias Ambientais Quim & Farmaceut, Rua Sao Nicolau 210, BR-09913030 Diadema, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Environmental Management; v. 237, p. 170-179, MAY 1 2019.
• Citações Web of Science: 0

Resumo

Arsenic (As) is a non-threshold human carcinogenic. This element can be volatilized either by nature or anthropogenic sources. In the present study, the analytical performance of an As volatile species trapping system was evaluated to assess the As volatilization promoted by Penicillium sp. and Aspergillus sp., both isolated from rice rhizosphere, and Aspergillus niger sp. considered as a reference. The study was conducted for 60 days (sampling of volatile As species from 1st to 30th day and from 31st to 60th day). The efficiency of As-volatilization was associated with the fungal growth. The highest As volatilization occurred from 31st to 60th day. Penicillium sp., Aspergillus sp. and A. niger were capable of producing 57.8, 46.4, and 5.2% of volatile arsenic species, respectively. The speciation analysis has shown trimethylarsine (TMAs) as the main volatilized As-form, followed by mono- and dimethylarsine (MMAs and DMAs). The results are following the ``Challenger pathway{''}. Therefore, the tested fungi isolated from rice rhizosphere have shown promising properties concerning bio-volatilization with potential use for As-mitigation in paddy soils. (AU)

• Processo FAPESP: 15/06674-9 - Arsênio e arroz: monitoramento e estudos de (bio)remediação para segurança alimentar
• Beneficiário: Fabiana Roberta Segura
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 16/10060-9 - Equipamento multi-usuário (EMU) concedido no Processo FAPESP 2014/05151-0: espectrômetro de massas com plasma indutivamente acoplado hifenado a um cromatógrafo a líquido de alta eficiência (HPLC-ICP-MS)
• Beneficiário: Bruno Lemos Batista
• Modalidade de apoio: Auxílio à Pesquisa - Programa Equipamentos Multiusuários
• Processo FAPESP: 14/05151-0 - Arsênio e arroz: monitoramento e estudos de (bio)remediação para segurança alimentar
• Beneficiário: Bruno Lemos Batista
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 17/10104-9 - Arsênio e arroz: monitoramento e estudos de (bio)remediação para segurança alimentar
• Beneficiário: Giovanna de Oliveira Costa
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica