Professor Kiwamu Minamisawa of the Division of Genetic Ecology, Graduate School of Life Sciences, Tohoku University, in collaboration with Senior Researchers Hiroko Akiyama and Masahito Hayatsu of The National Institute for Agro-Environment Sciences has constructed a mutant of root nodule bacteria with an increased N2O reductase activity. By using the mutant through laboratory and field experiments, the researchers showed that N2O emissions from soils were reduced. N2O is a greenhouse gas and accelerates ozone layer depletion.
Results from the study have been attracting much attention as a novel biological method for the mitigation of N2O emissions, because there is no effective option to reduce N2O emissions from agricultural soils. The results from this research have been accepted by the British scientific journal “Nature Climate Change” and were published online on November 11, 2012.
Professor Kiwamu Minamisawa
Senior Researcher Manabu Itakura
Graduate School of Life Sciences, Tohoku University
Tel: +81-22-217-5684, +81-22-217-5687
E-mail: kiwamu*ige.tohoku.ac.jp (Replace* with @)