A Panax notoginseng Root Tip Meristem Biosensor and Its Sensing Kinetics for Five Important Nitrogen Nutrients

Table 3

Interconnected allosteric interaction constant Ka of the Panax notoginseng root tip meristem for five important nitrogen nutrients.

Nitrogen ligand	2-year-old Panax notoginseng Ka (Mol∙L^−1)	3-year-old Panax notoginseng Ka (Mol∙L^−1)	4-year-old Panax notoginseng Ka (Mol∙L^−1)
Urea
Sodium nitrate
Sodium glutamate
IMP-Na2
GMP-Na2