Screening and identifying a cadmium-resistant fungus and characterizing its cadmium adsorption

• Autorzy: Deng Y. , Wang L. , Luo K. , Peng D. , Jiang H. , Jin C. , Zhou X. , Bai L.
• Języki publikacji: EN

Abstrakty

EN

The main aim of this study was to screen and identify cadmium-resistant fungus and to characterize its cadmium adsorption. A cadmium-resistant strain (CN35) was isolated from cadmium-polluted paddy soil. Based on morphlogical characteristics, internal transcribed spacers region and β-tubulin gene sequence phylogenesis analysis, the strain was preliminarily identified to be Penicillium sp. This strain was resistant to Cd at 45 mM with Cd adsorption rate up to 83.56%, and also resistant to other heavy metals such as Pb, Zn, and Cu. When Cd²⁺ concentration ranged from 2 to 5 mM, the fungal colony changed from yellow/green to red. The colony morphology was also affected by Cd²⁺ concentrations with protuberances forming on the colony surface at 20 mM. The strain CN35 was found to grow well at pH 4 to 8 at between 24ºC and 37ºC, and the optimal growth conditions were established to be at pH 4 and 30ºC. Fermented liquid of the strain is neither disease-causing nor inhibitory to rice seedling emergence, but rather improves rice seedling and root growth and enhances rice detoxification ability under Cd stress. Thus, the Cd-resistant fungus CN35 has the potential to treat Cd-polluted rice paddies.

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2017
• Tom: 26
• Numer: 3
• Opis fizyczny: p.1011-1021,fig.,ref.

Twórcy

autor

Deng Y.

• Hunan Agricultural Biotechnology Research Center, Changsha, 410125, Hunan,China

autor

Wang L.

• Hunan Agricultural Biotechnology Research Center, Changsha, 410125, Hunan,China

autor

Luo K.

• College of Plant Protection, Hunan Agricultural University, Changsha, 410125, Hunan, China

autor

Peng D.

• Hunan Agricultural Biotechnology Research Center, Changsha, 410125, Hunan,China

autor

Jiang H.

• Hunan Agricultural Biotechnology Research Center, Changsha, 410125, Hunan,China

autor

Jin C.

• Collaborative Innovation Center for Field Weeds Control, Loudi, 417000, Hunan, China

autor

Zhou X.

• Hunan Agricultural Biotechnology Research Center, Changsha, 410125, Hunan,China

autor

Bai L.

• Hunan Agricultural Biotechnology Research Center, Changsha, 410125, Hunan,China

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Identyfikatory

DOI

10.15244/pjoes/67655