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Arsenic transformation and volatilization by arbuscular mycorrhizal symbiosis under axenic conditions
Li, Jinglong; Chen, Baodong; Zhang, Xin; Hao, Zhipeng; Zhang, Xuemeng; Zhu, Yongguan
2021-7-5
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
Volume413Pages:-
AbstractIt is well known that arbuscular mycorrhizal (AM) fungi can enhance plant arsenic (As) resistance by influencing As uptake, translocation, and speciation; however, As transformation and volatilization by an entire plant inoculated with AM fungus remains uninvestigated. In the present study, AM symbiosis of Rhizophagus irregularis with unbroken Medicago sativa was successfully established in vitro. Afterwards, five concentrations of arsenate were applied to the culture media. The results showed that AM inoculation could methylate inorganic As into dimethylarsinic acid (DMA), dimethylarsine (DMAsH), and trimethylarsine (TMAs), which were detected in the plants, media, or air. Volatile As, accounting for a small proportion of total organic As, appeared under high arsenate exposure, accompanied by remarkable upregulation of root RiMT-11, an arsenite methyltransferase gene in R. irregularis. In addition, AM colonization significantly increased arsenite percentages in plant tissues and external media. Regardless of As species, AM inoculation tended to release the transformed As into the environment rather than transfer them to plant tissues. Our present study, for the first time, comprehensively verified As methylation, volatilization, and reduction by AM fungus associated with the entire plant under absolute axenic conditions and gained a deeper insight into As metabolism in AM symbionts.
Department城市与区域生态国家重点实验室
KeywordAM fungi As methylation Gaseous As As reduction In vitro
WOS Research AreaEngineering, Environmental ; Environmental Sciences
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/45417
Collection城市与区域生态国家重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Environm & Hlth, Xiamen 361021, Peoples R China
Recommended Citation
GB/T 7714
Li, Jinglong,Chen, Baodong,Zhang, Xin,et al. Arsenic transformation and volatilization by arbuscular mycorrhizal symbiosis under axenic conditions[J]. JOURNAL OF HAZARDOUS MATERIALS,2021,413:-.
APA Li, Jinglong,Chen, Baodong,Zhang, Xin,Hao, Zhipeng,Zhang, Xuemeng,&Zhu, Yongguan.(2021).Arsenic transformation and volatilization by arbuscular mycorrhizal symbiosis under axenic conditions.JOURNAL OF HAZARDOUS MATERIALS,413,-.
MLA Li, Jinglong,et al."Arsenic transformation and volatilization by arbuscular mycorrhizal symbiosis under axenic conditions".JOURNAL OF HAZARDOUS MATERIALS 413(2021):-.
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