Cry1Ac expression in transgenic Bt cotton hybrids is influenced by soil moisture and depth

Journal or Publishing Institution: Current Science

Date of Publication: 09/25/2011

Study: http://www.currentscience.ac.in/Volumes/101/06/0783.pdf

Author(s): Blaise, D., and Kranthi, R.

Article Type: Peer Reviewed Study

Abstract:

Cry1Ac toxin concentration was assessed in leaves of Bt transgenic cotton hybrid grown on shallow (<60 cm) and deep (>90 cm) black soils of Nagpur, Maharashtra, India. Cry toxin concentration increased up to 80 days after sowing followed by a steep decline. In general, toxin concentration was greater on the deep black soils than the shallow soil. This was because of greater water-holding capacity of the deep soils. Cry toxin concentration was closely related to the soil water content. Beyond (excess moisture) and below (moisture deficit) field capacity, toxin concentration declined. A cubic polynomial best described the relationship between Cry toxin concentration and soil moisture content (R2 = 0.95).

Keywords: genetically modified (GM) maize, genetically modified (GM) corn, genetically engineered (GE), transgenic crops, genetically modified organisms (GMOs), Bt corn, Bt maize, Bt crops, Bt toxin, Bacillus thuringienus, Cry proteins, Cry toxins, pesticides, insecticides, endotoxins, black soil, shallow soil, soil moisture

Citation:

Blaise, D., and Kranthi, R., 2011. Cry1Ac expression in transgenic Bt cotton hybrids is influenced by soil moisture and depth. Current Science, 101(6), pp. 783-786

Category:

• Environmental effects
• Pesticide use

Record ID: 210