Influence of Transgenic Bt Crop Root Exudates on Rhizospheric Soil Microflora
نویسندگان
چکیده
Soil microbial diversity is an important index of agricultural productivity (Nimisha Sharma et al,.2010; Kent and Triplett, 2002; Isik, 2008). Both plant and the soil types influences the microbial diversity. Rhizosphere microbial diversity usually influenced by both plant and soil types. Plants and microorganisms interact with each other and co evaluate together. Their balance is important for sustainable agriculture. Recent applications of
منابع مشابه
Impact of Bt corn on rhizospheric and soil eubacterial communities and on beneficial mycorrhizal symbiosis in experimental microcosms.
A polyphasic approach has been developed to gain knowledge of suitable key indicators for the evaluation of environmental impact of genetically modified Bt 11 and Bt 176 corn lines on soil ecosystems. We assessed the effects of Bt corn (which constitutively expresses the insecticidal toxin from Bacillus thuringiensis, encoded by the truncated Cry1Ab gene) and non-Bt corn plants and their residu...
متن کاملTransgenic Bt-Cotton Affects Enzyme Activity and Nutrient Availability in a Sub-Tropical Inceptisol
In India, the area under transgenic crop cultivation has witnessed a phenomenal growth from 1.3 million hectares in 2005 to 3.8 million hectares in 2006, which is an increase of about 300 % in a year period (James 2006). Till March 2005, a total of 20 Bt-transgenic cotton hybrids have been released for commercial cultivation in northern, western and southern regions of India (Sharma et al. 2006...
متن کاملBiosafety assessment of transgenic Bt cotton on model animals
Methods: For this purpose, animals like rat and soil organisms like Earthworm were selected. Rats were selected on the basis of its 95% homology on genomic, cellular and enzymatic level with human while earthworm were preferred on the basis of their direct contact with soil to evaluate the impact of Bt (Cry1AC) crop field soil on earthworm, secreted by root exudates of Bt cotton. Several physic...
متن کاملPii: S0038-0717(01)00027-x
There were no signi®cant differences in the percent mortality and weight of earthworms (Lumbricus terrestris) after 40 days in soil planted with Bt (NK4640Bt) or non-Bt corn or after 45 days in soil amended with biomass of Bt or non-Bt corn. The toxin was present in the guts and casts of earthworms in soil planted with Bt corn or amended with biomass of Bt corn, but it was cleared within 2±3 da...
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The development of transgenic soybean has produced numerous economic benefits; however the potential impact of root exudates upon soil ecological systems and rhizospheric soil microbial diversity has also received intensive attention. In the present study, the influence of saline-alkali tolerant transgenic soybean of betaine aldehyde dehydrogenase on bacterial community structure and soil phosp...
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