Impact of salinity-tolerant MCM6 transgenic tobacco on soil enzymatic activities and the functional diversity of rhizosphere microbial communities |
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| Affiliation: | 1. CSIR - National Botanical Research Institute, Rana Pratap Marg, Lucknow, UP 226001, India;2. Plant Molecular Biology Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), Aruna Asaf Ali Marg, New Delhi 110067, India;1. Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677, USA;2. Member RIFM Expert Panel, Columbia University Medical Center, Department of Dermatology, 161 Fort Washington Ave., New York, NY, 10032, USA;3. Member RIFM Expert Panel, Malmo University Hospital, Department of Occupational & Environmental Dermatology, Sodra Forstadsgatan 101, Entrance 47, Malmo, SE-20502, Sweden;4. Member RIFM Expert Panel, School of Natural Resources & Environment, University of Michigan, Dana Building G110, 440 Church St., Ann Arbor, MI, 58109, USA;5. Member RIFM Expert Panel, Fraunhofer Institute for Toxicology and Experimental Medicine, Nikolai-Fuchs-Strasse 1, 30625, Hannover, Germany;6. Member RIFM Expert Panel, University of Sao Paulo, School of Veterinary Medicine and Animal Science, Department of Pathology, Av. Prof. dr. Orlando Marques de Paiva, 87, Sao Paulo, CEP 05508-900, Brazil;7. Member RIFM Expert Panel, University of Wuerzburg, Department of Toxicology, Versbacher Str. 9, 97078, Würzburg, Germany;8. Member RIFM Expert Panel, Oregon Health Science University, 3181 SW Sam Jackson Park Rd., Portland, OR, 97239, USA;9. Member RIFM Expert Panel, Vanderbilt University School of Medicine, Department of Biochemistry, Center in Molecular Toxicology, 638 Robinson Research Building, 2200 Pierce Avenue, Nashville, TN, 37232-0146, USA;10. Member of RIFM Expert Panel, University of Pennsylvania, Perelman School of Medicine, Center of Excellence in Environmental Toxicology, 1316 Biomedical Research Building (BRB) II/III, 421 Curie Boulevard, Philadelphia, PA, 19104-3083, USA;11. Member RIFM Expert Panel, The University of Tennessee, College of Veterinary Medicine, Department of Comparative Medicine, 2407 River Dr., Knoxville, TN, 37996- 4500, USA;12. Member RIFM Expert Panel, Department of Pharmacology, University of Arizona, College of Medicine, 1501 North Campbell Avenue, P.O. Box 245050, Tucson, AZ, 85724-5050, USA;13. Member RIFM Expert Panel, The Journal of Dermatological Science (JDS), Editor-in-Chief, Professor and Chairman, Department of Dermatology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, 431-3192, Japan;1. Department of Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India;2. Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221005, India;3. Soil Ecology Group, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan 666303, China |
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| Abstract: | ![]()
The development of genetically modified plants for agriculture has provided numerous economic benefits, but has also raised concern over the potential impact of transgenic plants upon the environment. The rhizosphere is the soil compartment that is directly under the influence of living roots; it constitutes a complex niche likely to be exploited by a wide variety of bacteria potentially influenced by the introduction of transgenes in genetically modified plants. In the present study, the impact of overexpression of the salinity stress-tolerant minichromosome maintenance complex subunit 6 (MCM6) gene upon functional diversity and soil enzymatic activity in the rhizosphere of transgenic tobacco in the presence and absence of salt stress was examined. The diversity of culturable bacterial communities and soil enzymes, namely, dehydrogenases and acid phosphatases, was assessed and revealed no significant (or only minor) alterations due to transgenes in the rhizosphere soil of tobacco plants. Patterns in principal components analysis showed clustering of transgenic and non-transgenic tobacco plants according to the fingerprint of their associated bacterial communities. However, the presence of MCM6 tobacco did not cause changes in microbial populations, soil enzymatic activities or the functional diversity of the rhizosphere soil microbial community. |
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