The Mechanisms Responsible for N Deficiency in Well-Watered Wheat Under Elevated CO.

Elevated CO concentration [e(CO)] often promotes plant growth with a decrease in tissue N concentration. In this study, three experiments, two under hydroponic and one in well-watered soil, including various levels or patterns of CO, humidity, and N supply were conducted on wheat ( L.) to explore the mechanisms of e[CO]-induced N deficiency (ECIND).