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Functional studies of AtACR2 gene putatively involved in accumulation, reduction and/or sequestration of arsenic species in plants
Systems Biology Research Center, School of Bioscience, University of Skövde, Skövde, Sweden.
Örebro universitet, Institutionen för naturvetenskap och teknik. Systems Biology Research Center, School of Bioscience, University of Skövde, Skövde, Sweden.ORCID-id: 0000-0002-8162-8945
School of Arts and Science, Iona College, New Rochelle, NY, USA.
Microbial Diversity Research Centre, Dr. D. Y. Patil Biotechnology and Bioinformatics Institute, Dr. D. Y. Patil Vidyapeeth, Tathawade, Pune, India.
Vise andre og tillknytning
2017 (engelsk)Inngår i: Biologia (Bratislava), ISSN 0006-3088, E-ISSN 1336-9563, Vol. 72, nr 5, s. 520-526Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Food-based exposure to arsenic is a human carcinogen and can severely impact human health resulting in many cancerous diseases and various neurological and vascular disorders. This project is a part of our attempts to develop new varieties of crops for avoiding arsenic contaminated foods. For this purpose, we have previously identified four key genes, and molecular functions of two of these, AtACR2 and AtPCSl, have been studied based on both in silico and in vivo experiments. In the present study, a T-DNA tagged mutant, (SALK-143282C with mutation in AtACR2 gene) of Arabidopsis thaliana was studied for further verification of the function of AtACR2 gene. Semi-quantitative RT-PCR analyses revealed that this mutant exhibits a significantly reduced expression of the AtACR2 gene. When exposed to 100 μM of arsenate (AsV) for three weeks, the mutant plants accumulated arsenic approximately three times higher (778 μg/g d. wt.) than that observed in the control plants (235 μg/g d. wt.). In contrast, when the plants were exposed to 100 μM of arsenite (AsIII), no significant difference in arsenic accumulation was observed between the control and the mutant plants (535 μg/g d. wt. and 498 μg/g d. wt., respectively). Also, when arsenate and arsenite was measured separately either in shoots or roots, significant differences in accumulation of these substances were observed between the mutant and the control plants. These results suggest that AtACR2 gene is involved not only in accumulation of arsenic in plants, but also in conversion of arsenate to arsenite inside the plant cells. © 2017 Institute of Molecular Biology, Slovak Academy of Sciences.

sted, utgiver, år, opplag, sider
Walter de Gruyter, 2017. Vol. 72, nr 5, s. 520-526
Emneord [en]
Arabidopsis thaliana, arsenate reductase 2 gene, arsenic accumulation, arsenic speciation, IC-ICP-DRC-MS, RT-PCR
HSV kategori
Forskningsprogram
Bioteknik
Identifikatorer
URN: urn:nbn:se:oru:diva-70464DOI: 10.1515/biolog-2017-0062ISI: 000404241300006Scopus ID: 2-s2.0-85021444188OAI: oai:DiVA.org:oru-70464DiVA, id: diva2:1267926
Tilgjengelig fra: 2018-12-04 Laget: 2018-12-04 Sist oppdatert: 2018-12-05bibliografisk kontrollert

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