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Pfaffia glomerata is a hyperaccumulator candidate: Cd and Zn tolerance, absorption, transfer, and distribution.
Huang, Rong; Wu, Zhimin; Zhao, Xinlin; Li, Feng; Wang, Weidong; Guo, Yuan; Li, Zhian; Wu, Jingtao.
Afiliación
  • Huang R; Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, China.
  • Wu Z; Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, China.
  • Zhao X; Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, China.
  • Li F; Xiaoliang Research Station for Tropical Coastal Ecosystems, and the CAS Engineering Laboratory for Ecological Restoration of Island and Coastal Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Department of Chemistry and Life Science, Xiangnan Universit
  • Wang W; Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, China.
  • Guo Y; Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, China. Electronic address: guoyuan@caas.cn.
  • Li Z; Xiaoliang Research Station for Tropical Coastal Ecosystems, and the CAS Engineering Laboratory for Ecological Restoration of Island and Coastal Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; South China National Botanical Garden, Guangzhou 510650, Chi
  • Wu J; Xiaoliang Research Station for Tropical Coastal Ecosystems, and the CAS Engineering Laboratory for Ecological Restoration of Island and Coastal Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; South China National Botanical Garden, Guangzhou 510650, Chi
Ecotoxicol Environ Saf ; 246: 114196, 2022 Nov.
Article en En | MEDLINE | ID: mdl-36252514
Pfaffia glomerata is a candidate for phytoremediation due to its high biomass and high bioaccumulation efficiency of multiple heavy metals. It is essential to further evaluate its tolerance, absorption, transfer, and distribution to multiple heavy metals. In the current study, we evaluated the tolerance, absorption, transfer, and distribution of P. glomerata in a Cd/Pb/Cu/Zn combined-contaminated environment by two hydroponic experiments. The results demonstrated that P. glomerata was not affected by Cd/Pb/Cu/Zn exposure, except for the 50 µM Cd/Pb/Cu/Zn treatment, which significantly decreased the stem biomass. In a single Cd, Pb, Cu, and Zn exposure, the root of P. glomerata absorbed Cd/Pb/Cu/Zn in the order of Cd > Zn > Pb > Cu. Almost all Pb and Cu accumulated in the plant roots and were hardly transferred to the aboveground parts. Therefore, the order of total Cd/Pb/Cu/Zn extraction of a single plant in multiple Cd/Pb/Cu/Zn exposures at the same concentration was Cd > Zn > Pb > Cu. The bioconcentration factor (BCF) of Cd and Zn in roots, stems, and leaves increased with the concentration of Cd and Zn in the solution, and was > 1. In contrast with Cd and Zn, the BCFs of Cu and Pb in the stems and leaves were < 1. The element distribution of Pb, Cu, Zn, and Mn in the stem of P. glomerata was dispersed, indicating that the stem of P. glomerata does not have a detoxification mechanism for distributing metals to the area of low biological activity. The total amount of tartaric acid, critic acid, and DOC secreted by P. glomerata roots decreased with the increase in Cd/Pb/Cu/Zn exposure. However, further investigation is needed to unravel the interaction between the LMWOAs secreted by the root of P. glomerata and heavy metals.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes del Suelo / Metales Pesados / Amaranthaceae Idioma: En Revista: Ecotoxicol Environ Saf Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes del Suelo / Metales Pesados / Amaranthaceae Idioma: En Revista: Ecotoxicol Environ Saf Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos