It has been shown that the algebraic form of the relations between two
biochemical parameters may prove to be a sensitive way for evidencing
stress effects (Bounias, 1975; Bounias et al.,1987). This might allow the characterization of stresses even in particular cases where no deviation of the concentrations from the normal range of natural values can be detected.
Fig. 2 - Biphasic dose/effectrelationships:
A et B resp. = Raffinose and Ribose-like concentrations
versus e -d.
C = control of Barley leaves
phosphatases by L. leucine (Bounias & Pachéco, 1972).
D = control of Lettuce roots growth (mm) by solstitiolide (µ/g) Stevens et Merril, 1985
 |
|
|
Fig. 3. Biphasic dose/effect relationships:
A and B resp. = theonine and serine concentrations (in small frames) or differential levels
(Ro-R) versus e-d.
C = action of a bacterial
toxin on mosquitoes lipids (Nizeyimana et al.,1987).
D = action of and incident electromagnetic field intensity
on cAMP levels in cultured bone cells of rat
(Sornjen et al.,1982).
 |
|