Influence of transgenic Bt crop root exudates on rhizospheric soil microflora

Journal or Publishing Institution: International Journal of Current Microbiology and Applied Sciences

Date of Publication: 01/01/2014

Study: https://www.researchgate.net/publication/298863657_Influence_of_Transgenic_Bt_Crop_Root_Exudates_on_Rhizospheric_Soil_Microflora

Author(s): Audiseshamma, K., Paramageetham, C., Theja, P.C., Hooda, V. and Babu, G.P.

Article Type: Peer Reviewed Study

Abstract:

In soil root exudates govern which organisms reside in the rhizosphere. Therefore any change to the quality of crop residues and rhizosphere inputs could modify the dynamics of the composition and activity of organisms in soil. Insect resistant Bt crops have the potential to change the microbial dynamics, biodiversity and essential ecosystem functions in soil, because they usually produce insecticidal ‘cry’ proteins through all parts in plants. Bacteria and Yeast populations were increased in rhizospheric soils and Actinomycete and fungal populations were reduced. Similarly, in case of beneficial microorganisms Rhizobium, Azospirillum and Phosphate solubilizers were reduced in Bt cotton soils compared to Non Bt cotton soils but, Azatobacter populations were increased three times in Bt cotton soils compared to non Bt cotton soils. However, Cellulomonas populations were unaffected.

Keywords: insecticides, genetically modified (GM) cotton, genetically engineered (GE), GMO, Bt cotton, Bt crops, Bt toxin, Bacillus thuringienus, Cry proteins, Cry toxins, pesticides, insecticides, endotoxins, cellulomonas, rhizobium, Azospirillum, Azatobacter, rhizosphere, microflora, bacteria, yeast

Citation:

Audiseshamma, K., Paramageetham, C., Theja, P.C., Hooda, V. and Babu, G.P., 2014. Influence of transgenic Bt crop root exudates on rhizospheric soil microflora. International Journal of Current Microbiology and Applied Sciences, 3(5), pp.289-294.

Category:

Environmental effects
Pesticide use

Record ID: 98