title: Phytolacca acinosa Roxb. with Arthrobacter echigonensis MN1405 enhances heavy metal phytoremediation.
abstract: The growth and metal-extraction efficiency of plants when exposed to toxic metals can be enhanced by inoculating with certain bacteria, but the mechanisms of this process remain unclear. We report results from glasshouse experiments on the effect of Arthrobacter echigonensis MN1405 in promoting Phytolacca acinosa Roxb. growth when exposed to 100 mg/L Mn solution. Mn removal efficiency in solution was significantly enhanced by bacterial inoculation; Mn was accumulated in the root of P. acinosa Roxb. plant. The bacteria oxidized the Mn on root surface, which formed a Mn plaque to serve as a barrier or a containment to prevent metal toxicity. In this process, pH condition was an important factor on the effects of microbial-assisted heavy metal phytoremediation. Our finding suggests that A. echigonensis MN1405 assisted P. acinosa to achieve high remediation efficiency of Mn removal and accumulation in Mn contamination area.
authors.affiliation: a College of Life Sciences, Fujian Normal University , Fuzhou , Fujian Province , China.
authors.forename: FengYu
authors.initials: F
authors.lastname: Li
authors.affiliation: a College of Life Sciences, Fujian Normal University , Fuzhou , Fujian Province , China.
authors.forename: KeLi
authors.initials: K
authors.lastname: Tang
authors.affiliation: a College of Life Sciences, Fujian Normal University , Fuzhou , Fujian Province , China.
authors.forename: ChunTing
authors.initials: C
authors.lastname: Cai
authors.affiliation: a College of Life Sciences, Fujian Normal University , Fuzhou , Fujian Province , China.
authors.forename: XuPing
authors.initials: X
authors.lastname: Xu
mesh_terms: D001173:Arthrobacter / Q000502:physiology*; D001673:Biodegradation, Environmental; D008345:Manganese / Q000378:metabolism*; D029603:Phytolacca / Q000254:growth & development / Q000382:microbiology / Q000502:physiology*; D018517:Plant Roots / Q000254:growth & development / Q000382:microbiology / Q000502:physiology; D012989:Soil Pollutants / Q000378:metabolism*; D013559:Symbiosis
chemical_list: D012989:Soil Pollutants; D008345:Manganese
keywords: Arthrobacter echigonensis MN1405; Mn phytoremediation; Phytolacca acinosa Roxb