Using a systems biological analysis of genome-scale data from the model plant Arabidopsis, an international team of researchers identified that the master gene controlling the biological clock is sensitive to nutrient status. The study will appear in the latest issue of the Proceedings of the National Academy of Sciences. This hypothesis derived from multi-network analysis of Arabidopsis genomic data, and validated experimentally, has shed light on how nutrients affect the molecular networks controlling plant growth and development in response to nutrient sensing.
The study was conducted by a team of researchers at New York University’s Center for Genomics and Systems Biology, Chile’s Pontificia Universidad Católica de Chile, Dartmouth College, and Cold Spring Harbor Labs. The study’s lead authors are Rodrigo A. Gutiérrez of the Pontificia Universidad Católica de Chile and Gloria Coruzzi of NYU’s Center for Genomics and Systems Biology. They note that the systems biology approach to uncovering nutrient regulated gene networks provides new targets for engineering traits in plants of agronomic interest such as increased nitrogen use efficiency, which could lead to reduced fertilizer cost and lowering ground water contamination by nitrates.
Scientists have previously studied how nitrogen nutrients affect gene expression as a way to understand the mechanisms that control plant growth and development. Nitrogen is an essential nutrient and a metabolic signal that is sensed and converted, resulting in the control of gene expression in plants. In addition, nitrate has been shown to
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