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.
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This study was sponsored by Project PCECCCNA-050954 of Consejo Nacional de Ciencia y Tecnología (CONACyT).
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Cruz Ortega, R., Anaya, A.L., Gavilanes-Ruiz, M. et al. Effect of diacetyl piquerol on H+-ATPase activity of microsomes fromIpomoea purpurea . J Chem Ecol 16, 2253–2261 (1990). https://doi.org/10.1007/BF01026935
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DOI: https://doi.org/10.1007/BF01026935