Effect of glyphosate on the ability to nitrogen fixation in soybean RR

• Grant number: 12/16728-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: January 01, 2013
• End date: March 31, 2016
• Field of knowledge: Biological Sciences - Botany - Pant Physiology
• Principal Investigator: Liliane Santos de Camargos
• Grantee: Nayane Cristina Pires Bomfim
• Host Institution: Faculdade de Engenharia (FEIS). Universidade Estadual Paulista (UNESP). Campus de Ilha Solteira. Ilha Solteira , SP, Brazil

Abstract

The Brazilian soybean production dispenses entirely nitrogen, nitrogen compounds all of this plant comes from the symbiotic association, making the product highly competitive Brazilian. Conversely, glyphosate can affect biological nitrogen fixation due to reducing the nickel content, this being an essential micronutrient for the symbiotic microorganisms, while glyphosate can also influence the symbiotic nitrogen fixation. Since there are no conclusive studies on the rate of nitrogen fixation in RR soybeans, after the application of glyphosate, the present study is to obtain a profile of the influence of the application of glyphosate in GM soybeans on the stability of the system of nitrogen fixation through the quantification of these ureides in xylem sap versus the activity of nitrogenase enzyme in vivo. (AU)