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Improvement in phytoremediation potential of Solanum nigrum under cadmium contamination through endophytic-assisted Serratia sp. RSC-14 inoculation.
Environ Sci Pollut Res Int. 2015 Sep; 22(18):14032-42.ES

Abstract

The growth of hyperaccumulator plants is often compromised by increased toxicity of metals like cadmium (Cd). However, extraction of such metals from the soil can be enhanced by endophytic microbial association. Present study was aimed to elucidate the potential of microbe-assisted Cd phytoextraction in hyperaccumulator Solanum nigrum plants and their interactions under varied Cd concentrations. An endophytic bacteria Serratia sp. RSC-14 was isolated from the roots of S. nigrum. In addition to Cd tolerance up to 4 mM, the RSC-14 exhibited phosphate solubilization and secreted plant growth-promoting phytohormones such as indole-3-acetic acid (54 μg/mL). S. nigrum plants were inoculated with RSC-14 and were grown in different concentrations of Cd (0, 10, and 30 mg Cd kg(-1) sand). Results revealed that Cd treatment caused significant cessation in plant growth, biomass, and chlorophyll content, whereas significantly higher malondialdehyde (MDA) and electrolyte production in leaves were observed in a dose-dependent manner. Conversely, RSC-14 inoculation relived the toxic effects of Cd-induced stress by significantly increasing root/shoot growth, biomass production, and chlorophyll content and decreasing MDA and electrolytes contents. Ameliorative effects on host growth were also observed by the regulation of metal-induced oxidative stress enzymes such as catalase, peroxidase, and polyphenol peroxidase. Activities of these enzymes were significantly reduced in RSC-14 inoculated plants as compared to control plants under Cd treatments. The lower activities of stress responsive enzymes suggest modulation of Cd stress by RSC-14. The current findings support the beneficial uses of Serratia sp. RSC-14 in improving the phytoextraction abilities of S. nigrum plants in Cd contamination.

Authors+Show Affiliations

School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, 702-701, Republic of Korea.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25956518

Citation

Khan, Abdur Rahim, et al. "Improvement in Phytoremediation Potential of Solanum Nigrum Under Cadmium Contamination Through Endophytic-assisted Serratia Sp. RSC-14 Inoculation." Environmental Science and Pollution Research International, vol. 22, no. 18, 2015, pp. 14032-42.
Khan AR, Ullah I, Khan AL, et al. Improvement in phytoremediation potential of Solanum nigrum under cadmium contamination through endophytic-assisted Serratia sp. RSC-14 inoculation. Environ Sci Pollut Res Int. 2015;22(18):14032-42.
Khan, A. R., Ullah, I., Khan, A. L., Park, G. S., Waqas, M., Hong, S. J., Jung, B. K., Kwak, Y., Lee, I. J., & Shin, J. H. (2015). Improvement in phytoremediation potential of Solanum nigrum under cadmium contamination through endophytic-assisted Serratia sp. RSC-14 inoculation. Environmental Science and Pollution Research International, 22(18), 14032-42. https://doi.org/10.1007/s11356-015-4647-8
Khan AR, et al. Improvement in Phytoremediation Potential of Solanum Nigrum Under Cadmium Contamination Through Endophytic-assisted Serratia Sp. RSC-14 Inoculation. Environ Sci Pollut Res Int. 2015;22(18):14032-42. PubMed PMID: 25956518.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Improvement in phytoremediation potential of Solanum nigrum under cadmium contamination through endophytic-assisted Serratia sp. RSC-14 inoculation. AU - Khan,Abdur Rahim, AU - Ullah,Ihsan, AU - Khan,Abdul Latif, AU - Park,Gun-Seok, AU - Waqas,Muhammad, AU - Hong,Sung-Jun, AU - Jung,Byung Kwon, AU - Kwak,Yunyoung, AU - Lee,In-Jung, AU - Shin,Jae-Ho, Y1 - 2015/05/10/ PY - 2015/03/06/received PY - 2015/04/30/accepted PY - 2015/5/10/entrez PY - 2015/5/10/pubmed PY - 2016/4/7/medline SP - 14032 EP - 42 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 22 IS - 18 N2 - The growth of hyperaccumulator plants is often compromised by increased toxicity of metals like cadmium (Cd). However, extraction of such metals from the soil can be enhanced by endophytic microbial association. Present study was aimed to elucidate the potential of microbe-assisted Cd phytoextraction in hyperaccumulator Solanum nigrum plants and their interactions under varied Cd concentrations. An endophytic bacteria Serratia sp. RSC-14 was isolated from the roots of S. nigrum. In addition to Cd tolerance up to 4 mM, the RSC-14 exhibited phosphate solubilization and secreted plant growth-promoting phytohormones such as indole-3-acetic acid (54 μg/mL). S. nigrum plants were inoculated with RSC-14 and were grown in different concentrations of Cd (0, 10, and 30 mg Cd kg(-1) sand). Results revealed that Cd treatment caused significant cessation in plant growth, biomass, and chlorophyll content, whereas significantly higher malondialdehyde (MDA) and electrolyte production in leaves were observed in a dose-dependent manner. Conversely, RSC-14 inoculation relived the toxic effects of Cd-induced stress by significantly increasing root/shoot growth, biomass production, and chlorophyll content and decreasing MDA and electrolytes contents. Ameliorative effects on host growth were also observed by the regulation of metal-induced oxidative stress enzymes such as catalase, peroxidase, and polyphenol peroxidase. Activities of these enzymes were significantly reduced in RSC-14 inoculated plants as compared to control plants under Cd treatments. The lower activities of stress responsive enzymes suggest modulation of Cd stress by RSC-14. The current findings support the beneficial uses of Serratia sp. RSC-14 in improving the phytoextraction abilities of S. nigrum plants in Cd contamination. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/25956518/Improvement_in_phytoremediation_potential_of_Solanum_nigrum_under_cadmium_contamination_through_endophytic_assisted_Serratia_sp__RSC_14_inoculation_ DB - PRIME DP - Unbound Medicine ER -