The Effect of Coumarins on Root Elongation and Ultrastructure of Meristematic Cell Protoplast

Kupidłowska, Ewa; Kowalec, M.; Sulkowski, Grzegorz; Zobel, Alicja M.

doi:10.1006/anbo.1994.1065

Cited by 42 publications

(26 citation statements)

References 18 publications

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“…They have been implicated in the modulation of polar auxin transport (Jacobs and Rubery 1988), male fertility (Taylor and Jorgensen 1992), and cell division (Binns et al 1987). It was suggested by Kupidlowska et al (1994) that some coumarin derivatives have an effect on the secretory organelles, leading to disturbances in cell growth and structural changes in meristematic cells.…”

Section: Resultsmentioning

confidence: 99%

Patterns of phenolic compounds in leafy galls of tobacco

Vereecke

Messens

Klarskov

et al. 1997

Planta

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The chemical composition of ethanolic and aqueous extracts from leafy galls produced after infection of Nicotiana tabacum L. plants with Rhodococcus fascians was drastically changed compared to uninfected controls. Chlorogenic acid was abundant both in uninfected and infected plants, but caffeic acid and another cinnamoyl analogue were new in leafy galls. The most pronounced product induced in leafy galls was identified as 7-O-methyl-6-O-beta-D-glucopyranosyl coumarin (7-methyl esculin). This is the first report of the presence of this coumarin derivative in tobacco. Interestingly, 7-methyl esculin did not accumulate in the presence of avirulent R. fascians strains nor was it found in leafy galls on other plant species. However, it did appear in crown galls induced by Agrobacterium tumefaciens on tobacco plants. Intriguingly, none of the phenolics known to accumulate in Solanaceae under pathogen attack were found in leafy galls. 7-Methyl esculin barely affected growth of R. fascians nor was it catabolized. Microscopical analysis showed that autofluorescent compounds were located mainly in the abundant meristematic regions of the leafy galls. We postulate that 7-methyl esculin might locally influence plant cell division.

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Section: Resultsmentioning

confidence: 99%

Patterns of phenolic compounds in leafy galls of tobacco

Vereecke

Messens

Klarskov

et al. 1997

Planta

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“…Indeed, previous results have demonstrated that the presence of substituents in the aromatic ring changed allelopathic phytotoxicity, i.e. the hydroxylation of trans-cinnamic acid decreased the inhibitory activity on ion uptake (Yu and Matsui 1997) and reduced the inhibitory activity of coumarin on root elongation (Kupidlovska et al 1994). Also the position and/or the isomerization of the substitution group defined allelopathic activity, i.e.…”

Section: ⎯⎯⎯⎯mentioning

confidence: 99%

Allelochemical effects on net nitrate uptake and plasma membrane H<sup>+</sup>-ATPase activity in maize seedlings

et al. 2010

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Seven-day-old maize seedlings grown in a nitrogen-free hydroponic culture were exposed for 48 h to 0, 100 and 300 µM trans-cinnamic, p-coumaric, ferulic, caffeic acids, umbelliferone and 200 µM KNO 3 . Net nitrate uptake was affected by trans-cinnamic, ferulic and p-coumaric acids in a concentration-dependent manner, and trans-cinnamic acid appeared to be the strongest inhibitor. Conversely, at low concentrations, caffeic acid stimulated net nitrate uptake while umbelliferone did not influence it. After 24 h of treatment, plasma membrane H + -ATPase activity significantly decreased in a concentration-dependent manner in response to trans-cinnamic, ferulic and p-coumaric acids, while umbelliferone and caffeic acid had no effect on H + -ATPase activity.

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“…3,4 Like other allelochemicals, such as phenolic compounds released from living plants into the environment, 5 coumarin can influence many physiological and biochemical processes: root growth, [6][7][8][9] nitrate uptake and metabolism, 10,11 respiration and photosynthesis 12 and germination. [13][14][15] The effect of coumarin is species-specific 7,15 and concentration-dependent, often stimulatory at low and inhibitory at high concentrations.…”

Section: Introductionmentioning

confidence: 99%