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

Figure 6

Double reciprocal-based fitting curves of the biosensors constructed with root tip meristems of two-year-old P. notoginseng (a), three-year-old P. notoginseng (b), and four-year-old P. notoginseng (c) in sensing sodium nitrate solutions.

(a)

(b)

(c)