Lepidimoic acid increases fructose 2,6-bisphosphate in Amaranthus seedlings.
This study examines the influence of the growth promoter, lepidimoic acid, on the level of an important cytosolic signal metabolite, fructose 2,6-bisphosphate (Fru-2,6-P2), which can activate pyrophosphatedependent:phosphofructokinase (PFP, EC 2.7.1.90), and on glycolytic metabolism in Amaranthus caudatus seedlings. Fru-2,6-P2 concentrations were respectively increased by approximately 2-, 3- and 4-fold when the seedlings were treated with 0.3, 3 and 30 mM lepidimoic acid. Exogenous lepidimoic acid also affected levels of glycolytic intermediates in the seedlings. The increase in fructose 1,6-bisphosphate and decreases in fructose 6-phosphate and glucose 6-phosphate were found in response to the elevated concentration of lepidimoic acid. These results suggest that lepidimoic acid may affect glycolytic metabolism in the Amaranthus seedlings by increasing the activity of PFP due to increasing level of Fru-2,6-P2.
Department of Biochemistry and Food Science, Faculty of Agriculture, Kagawa University, Miki, Japan. hisashi@ag.kagawa-u.ac.jp
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H
Kato-Noguchi
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K
Yamada
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K
Hasegawa
D005635:Fructosediphosphates / Q000096:biosynthesis*; D006027:Glycosides / Q000494:pharmacology*; D019684:Magnoliopsida / Q000187:drug effects* / Q000378:metabolism; D014574:Uronic Acids / Q000494:pharmacology*
D005635:Fructosediphosphates; D006027:Glycosides; D014574:Uronic Acids; C110298:lepidimoic acid; C027652:fructose 2,6-diphosphate