ISSN:
1573-1561
Keywords:
Piquerol
;
Piqueria trinervia
;
modes of action
;
allelopathy
;
allelochemicals
;
microsomes
;
Ipomoea purpurea
;
plasmalemma
;
tonoplast
;
germination
;
H+-ATPase
;
proton pumps
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Chemistry and Pharmacology
Notes:
Abstract The effect of an allelopathic compound, diacetyl-piquerol on the H+ -ATPase activity of the microsomal fraction from the radicles of a common weedIpomoea purpurea was studied. The diacetyl-piquerol inhibited the germination and radicle growth fromI. purpurea; the radicle growth was increasingly inhibited (10% to 100%) as piquerol concentrations were raised (10 μM to 1000 μM). The H+-ATPase activity was inhibited (48%) by 500 μM diacetyl-piquerol, and this inhibition was higher in plasma membrane ATPase (67.2%) than in tonoplast membrane ATPase (31.4%). Additional studies of the precise physiological mechanisms of interference caused by allelopathic compounds are needed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01026935
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