Transcripts related with ammonium use and effects of gibberellin on expressions of the transcripts responding to ammonium in two invasive and native species.

Soil nitrogen forms are important for exotic plant invasions. However, little effort has been made to study the molecular mechanisms underlying the utilization of different N forms in co-occurring invasive and native plants. The invasive plant prefers nitrate relative to ammonium, and mainly invades nitrate-dominated environments, while it co-occurring native congener prefers ammonium.