Sa. Stanko et al., NITROGEN-METABOLISM AND ESTERASE-ACTIVITY IN WHEAT-SEED ENDOSPERM AT THE STAGE OF HETEROTROPHIC NUTRITION WITH NOVEL BIOREGULATORS OF THE FUMAR FAMILY, Izvestia Akademii nauk SSSR. Seria biologiceskaa, (3), 1995, pp. 291-299
When used for the presowing treatment of wheat seeds over a wide conce
ntration range (10(-9) - 10(-4) M), the novel bioregulators of the Fum
ar family outperform IAA and GA-3 in terms of utilization of the nitro
gen reserves in the endosperm, the synthesis of structural and cytopla
smic proteins, esterase activity, and growth of seedlings and roots at
the stage of heterotrophic nutrition of the germinants. A correlation
has been found between the bioregulator-induced activation of certain
physiological and biochemical processes and the activity of leaf and
root esterases in the germinants. Wheat esterase activity is controlle
d by the Est12, Est1, Est2, Est4, and Est5 esterases in seedlings or b
y the Est1, Est2, Est4, Est5, and Est11 esterases in roots. The relati
onship between the expression of esterase genes and the structure of t
he bioregulators is discussed.