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Ooshiro, Atsushi; Takaesu, Kazuko; Taba, Satoshi; Uehara, Mika; Takaesu, Yoshihumi; Iraha, Yukikazu

doi:10.3719/weed.51.28

Cited by 3 publications

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“…3) We screened native plants in Okinawa that inhibit the growth of R. solanacearum to develop a method to control bacterial wilt of potato, and found that an extract of aerial tissue of Geranium carolinianum showed strong inhibitory activity against R. solanacearum, 4) and that plowing-in of the dried plant was effective to control the bacterial wilt of potato. 5) The G. carolinianum extract was also effective to control potato scab caused by Streptomyces spp. 6) One of the antibacterial constituents of G. carolinianum was identified as ethyl gallate.…”

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confidence: 99%

Antibacterial activity of alkyl gallates and related compounds against Ralstonia solanacearum

et al. 2011

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Antibacterial activity of alkyl gallates and their analogs against Ralstonia solanacearum was examined. Methyl gallate showed the strongest activity among the alkyl gallates; activity decreased as the carbon number of esters increased. This tendency of alkyl gallates to act against R. solanacearum was dissimilar to its previously reported action against Gram-negative and Gram-positive bacteria and fungi. Among related compounds with a differing position and number of phenolic hydroxyl groups, methyl 2,3-dihydroxybenzoate showed comparable or slightly stronger activity than methyl gallate. Geraniin, one of the characteristic secondary metabolites produced by Geranium spp., showed moderate activity.

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Section: Introductionmentioning

confidence: 99%

Antibacterial activity of alkyl gallates and related compounds against Ralstonia solanacearum

et al. 2011

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Control of potato scab by Geranium carolinianum L.

Ooshiro

Natsume

2007

Weed Biology and Management

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Identification and activity of ethyl gallate as an antimicrobial compound produced by Geranium carolinianum

Ooshiro

Hiradate

Takushi

et al. 2009

Weed Biology and Management

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We isolated an antimicrobial compound from the aerial tissue of Geranium carolinianum and identified it as ethyl 3, 4, 5-trihydroxy benzoate (ethyl gallate) by 1 H-NMR and 13 C-NMR and gas chromatography-mass spectrometry.The antimicrobial activity of ethyl gallate against three potato pathogens was assayed by the paper disk method. The activity against Ralstonia solanacerum, Streptomyces scabies, and Streptomyces acidiscabies was observed at concentrations >200, >300, and >300 mg disk -1 , respectively. These results suggest that the antimicrobial activity of Geranium carolinianum against soil-borne plant disease pathogens is partly related to ethyl gallate.

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Cited by 3 publications

References 1 publication

Antibacterial activity of alkyl gallates and related compounds against Ralstonia solanacearum

Antibacterial activity of alkyl gallates and related compounds against Ralstonia solanacearum

Control of potato scab by Geranium carolinianum L.

Identification and activity of ethyl gallate as an antimicrobial compound produced by Geranium carolinianum

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