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Transgenic tobacco plants expressing ACR2 gene of Arabidopsis thaliana exhibit reduced accumulation of arsenics and increased tolerance to arsenate
Högskolan i Skövde, Institutionen för biovetenskap. Högskolan i Skövde, Forskningscentrum för Systembiologi. Högskolan i Skövde. (Bioteknik, Biotechnology)ORCID-id: 0000-0002-6319-4055
2015 (Engelska)Ingår i: Transgenic tobacco plants expressing ACR2 gene of Arabidopsis thaliana exhibit reduced accumulation of arsenics and increased tolerance to arsenate, Omics International Conference , 2015, Vol. 2, s. 32-Konferensbidrag, Muntlig presentation med publicerat abstract (Refereegranskat)
Abstract [en]

Transgenic tobacco plants expressing ACR2 gene of Arabidopsis thaliana exhibit reduced accumulation of arsenics and increased tolerance to arsenate.

Toxic metals such as arsenics, lead, cadmium or chromium are the major environmental pollutants that severely contribute to contamination of the global food chain directly through their accumulation in the edible parts of the cultivated crops or indirectly via meat-milk pathway. Fortunately, plant genetic engineering has the potential for developing new crop cultivars for removal of the toxic substances from the polluted sources or for avoiding accumulation of these contaminants in the edible parts. Previously, we have identified and studied four key genes that are involved in accumulation of arsenics in plants (J Biol. Systems 2010, 18/1:1-19; J Mol. Modeling 2012, DOI 10.1007/s00894-012-1419 and J Mol. Modeling 2014, DOI 10.1007/s00894-014-2104). In this study, we have cloned and transformed the ACR2 gene (arsenic reductase 2) of Arabidopsis thaliana into tobacco plants (Nicotiana tabacum). Our results revealed that the transgenic tobacco plants are more tolerant to arsenic than the wild-type control plants. These plants can grow on medium containing 200 µM arsenate, whereas the non-transgenic plants can hardly survive under this condition. Furthermore, when exposed to 100 µM arsenate for 35 days accumulation of arsenics in shoots of the transgenic plants decreases significantly (28 µg/g d wt.) compared to that observed in the non-transgenic control plants (40 µg/g d wt.). This study shows that A. thaliana ACR2 gene is a potential candidate for genetic engineering of plants to develop new cultivars that can be grown on arsenic contaminated fields and can supply harmless foods containing no or significantly reduced amount of arsenics.

Ort, förlag, år, upplaga, sidor
Omics International Conference , 2015. Vol. 2, s. 32-
Serie
Journal of Plant Physiology and Pathology, ISSN 2329-955X ; 2:5
Nyckelord [en]
Arsenic contamination, Human health, Phytoremediation, Transgenic plants
Nationell ämneskategori
Naturvetenskap Biologiska vetenskaper
Forskningsämne
Naturvetenskap; Bioteknik
Identifikatorer
URN: urn:nbn:se:his:diva-11637DOI: 10.4172/2329-955X.C1.002OAI: oai:DiVA.org:his-11637DiVA, id: diva2:865723
Konferens
Global Summit on Plant Science, September 21-23, 2015, San Antonio, Texas, USA
Projekt
Bioremediation of toxic metals
Forskningsfinansiär
Sida - Styrelsen för internationellt utvecklingssamarbete, AKT-2010-18
Anmärkning

 

Tillgänglig från: 2015-10-29 Skapad: 2015-10-29 Senast uppdaterad: 2019-10-31Bibliografiskt granskad

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Mandal, Abul

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NaturvetenskapBiologiska vetenskaper

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