Nigel M. Crawford mainly focuses on Biochemistry, Arabidopsis, Nitrate, Mutant and Nitrate reductase. Arabidopsis is closely attributed to Gene expression in his work. His Nitrate study integrates concerns from other disciplines, such as Molecular biology and Shoot. His work on Arabidopsis thaliana as part of general Mutant study is frequently linked to Cadmium, bridging the gap between disciplines. In his study, Nitrite reductase and Gene expression profiling is strongly linked to Metabolism, which falls under the umbrella field of Nitrate reductase. His research in Nitrite transport intersects with topics in Gene product and Botany.