Publication: Improvement of cadmium phytoremediation after soil inoculation with a cadmium-resistant Micrococcus sp.
Issued Date
2016-01-01
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ISSN
16147499
09441344
09441344
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2-s2.0-84954385684
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Mahidol University
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SCOPUS
Bibliographic Citation
Environmental Science and Pollution Research. Vol.23, No.1 (2016), 756-764
Suggested Citation
Chirawee Sangthong, Kunchaya Setkit, Benjaphorn Prapagdee Improvement of cadmium phytoremediation after soil inoculation with a cadmium-resistant Micrococcus sp.. Environmental Science and Pollution Research. Vol.23, No.1 (2016), 756-764. doi:10.1007/s11356-015-5318-5 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/40678
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Title
Improvement of cadmium phytoremediation after soil inoculation with a cadmium-resistant Micrococcus sp.
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Abstract
© 2015, Springer-Verlag Berlin Heidelberg. Cadmium-resistant Micrococcus sp. TISTR2221, a plant growth-promoting bacterium, has stimulatory effects on the root lengths of Zea mays L. seedlings under toxic cadmium conditions compared to uninoculated seedlings. The performance of Micrococcus sp. TISTR2221 on promoting growth and cadmium accumulation in Z. mays L. was investigated in a pot experiment. The results indicated that Micrococcus sp. TISTR2221significantly promoted the root length, shoot length, and dry biomass of Z. mays L. transplanted in both uncontaminated and cadmium-contaminated soils. Micrococcus sp. TISTR2221 significantly increased cadmium accumulation in the roots and shoots of Z. mays L. compared to uninoculated plants. At the beginning of the planting period, cadmium accumulated mainly in the shoots. With a prolonged duration of cultivation, cadmium content increased in the roots. As expected, little cadmium was found in maize grains. Soil cadmium was significantly reduced with time, and the highest percentage of cadmium removal was found in the bacterial-inoculated Z. mays L. after transplantation for 6 weeks. We conclude that Micrococcus sp. TISTR2221 is a potent bioaugmenting agent, facilitating cadmium phytoextraction in Z. mays L.