Evaluation of the effects of modified growth hormone and lignin composition on poplar chemical defenses and as host plant material for cottonwood leaf beetle (CLB). 

There is interest in poplar for use as biofuel feedstock due to its propensity for fast biomass accumulation.  Modification of the plant growth hormone; gibberellic acid (GA), and lignin composition may affect biomass production and biofuel processing, respectively. 

Our goal is to investigate what consequences these genetic modifications (GM), paired with high and low soil fertility, may have on poplar chemical defenses against pests such as CLB.  Also, to investigate effects on CLB survival, development and fecundity on GM host plant material.