Premium
The Effect of Some Inhibitory Sugars upon the Content of Adenosine Triphosphate in Wheat Roots
Author(s) -
STENLID GÖRAN
Publication year - 1971
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1971.tb01463.x
Subject(s) - mannose , chemistry , biochemistry , adenosine triphosphate , respiration , galactose , flavanone , naringenin , biology , botany , flavonoid , antioxidant
The content of adenosine triphosphate (ATP) in roots of ‐wheat ( Triticum aestivum L.) was determined with the fire‐fly‐luciferase method. The content is decreased by D‐mannose, which inhibits root growth, respiration and chloride uptake. In intact seedlings the inhibition of root growth is relieved by other sugars and also by the flavanone naringenin and by 2,4‐dinitrophenol. This reversal is combined with an increased content of ATP. The inhibition of chloride uptake by mannose in excised roots is reversed by some other sugars (including D‐galactose which is in itself inhibitory to root growth), and also in this case the ATP content is increased. Naringenin and dinitrophenol do not relieve the inhibition of chloride uptake caused by mannose. Nor do they increase the content of ATP in this case. The primary effect of mannose seems to be inhibition of glycolysis whereas the effect upon root growth is secondary. Galactose, which also inhibits root growth, does not inhibit respiration or reduce the ATP content and the primary effect of galactose (and also of 2‐deoxy‐D‐glucose and 2‐deoxy‐D‐galactose) seems to be on the synthesis of cell wall substances.