Inhibition of cucumber leaf expansion by ferulic acid in split-root experiments

Klein, Kristofer; Blum, Udo

doi:10.1007/bf01021777

Cited by 34 publications

(5 citation statements)

References 10 publications

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“…Based on the changes in percent inhibitions and shifts in regression equations over time, tomato and cucumber were less affected by subsequent treatments. The reduced inhibitions of growth rates of tomato in this study by FA treatments after the first FA treatment was similar to what has been observed previously with cucumber (Blum et al, 1985b;Klein and Blum, 1990). This suggested that cucumber and tomato acclimated to the presence of FA.…”

Section: Discussionsupporting

confidence: 92%

Effects of exogenously applied ferulic acid, a potential allelopathic compound, on leaf growth, water utilization, and endogenous abscisic acid levels of tomato, cucumber, and bean

Holappa

Blum

1991

J Chem Ecol

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To determine the relative sensitivities of tomato, cucumber, and bean to exogenously applied concentrations of ferulic acid (FA) and to determine whether FA-induced stress responses increase endogenous levels of abscisic acid (ABA), wild-type andFlacca (ABA-deficient mutant) tomato (Lycopersicon esculentum Mill. cv. Ailsa Craig), cucumber, (Cucumis sativus L. cv. Early Green Cluster), and bean (Phaseolus vulgaris L. cv. Oregon 91) were treated with FA (0.0, 0.2, 0.4, 0.8 mM) in nutrient solution every other day for a total of two or three treatments. FA inhibited leaf growth and water utilization of wild-type tomato,Flacca tomato, and cucumber, but not of bean. Acclimation to FA was observed following the first FA treatment and increased endogenous ABA levels were found in wild-type tomato,Flacca tomato, and cucumber following multiple FA treatments. Induction of ABA biosynthesis occurred in wild-type tomato within 8 hr of FA treatment and maximum ABA levels were observed 24 hr after treatment. At that time, ABA levels of tomato treated with 0.4 and 0.8 mM FA were 13.7 times and 2.6 times higher than control levels, respectively. A second FA (0.4 or 0.8 mM) treatment, 48 hr after the first, did not appear to affect ABA levels. Ninety-six hours after the first treatment, ABA levels of tomato treated with 0.4 mM FA approached control levels; ABA levels of plants treated with 0.8 mM FA were 1.9 times higher than control levels. Control ABA levels increased gradually with time. The data showed that plant sensitivity and ability of subsequent acclimation to phenolic acids, such as FA, were taxa dependent.

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Section: Discussionsupporting

confidence: 92%

Effects of exogenously applied ferulic acid, a potential allelopathic compound, on leaf growth, water utilization, and endogenous abscisic acid levels of tomato, cucumber, and bean

Holappa

Blum

1991

J Chem Ecol

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“…Many additional roles have been proposed for some of these compounds including as antioxidants (Bornman et al , 1997), constraints to cell and leaf expansion (Liu & McClure, 1995), deterrents against herbivores and pathogens, and allelopathic compounds (Klein & Blum, 1990). These diverse functions suggest that UV-B induced changes in plant phenolic chemistry could have a wide range of effects on the exposed plant, adjacent plants and other trophic levels.…”

Section: Uv-b Absorbing Phenolicsmentioning

confidence: 99%

Effects of Pollinators, Herbivores, and Seed Predators on Flowering Phenology

Brody

1997

Ecology

209

154

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The evolution of flowering phenology has most often been examined in light of one set of organisms, namely pollinators. However, the patterns of flowering phenology observed in nature are likely to reflect evolutionary compromises in response to a variety of selective forces. Two of the most important potentially opposing selective forces that could elicit such a compromise are pollinators and pre‐dispersal seed predators. Using a case study from my own work on the pollinators and pre‐dispersal seed predators of two members of the Polemoniaceae, Polemonium foliosissimum and Ipomopsis aggregata, I show that the outcome of selective pressures is not always predictable by examining one group of organisms or another. In addition, the outcome of separate and combined selective pressures is variable among years. Thus I show that only by considering all organisms that affect the fitness of a plant may we gain a complete understanding of the evolution of floral traits. I argue that we must account for both geographical and temporal variation in assessing the ecological and evolutionary importance of interacting organisms.

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“…The distribution of toxins in the soil surrounding plants in field situations is rarely homogeneous. Root growth and leaf expansion varied in proportion to the exposure of the root system to the allelopathic agent (Klein and Blum, 1990).…”

Section: Compounds and Groups Of Compounds Involvedmentioning

confidence: 99%

Chemistry and Mechanisms of Allelopathic Interactions

1996

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Allelopathy, originally defined as chemically elicited interactions between plants or fungi, is mediated by many types of compounds with different sites and modes of biochemical action. Although it is possible to measure a generalized effect, it is unlikely that deeper insight into the basic mechanisms of of this phenomenon will be obtained until problems are more clearly and specifically delineated. Future work should include identification of the compounds found in specific interactions and their evaluation in bioassay systems that use organisms actually involved in the response. A broader range of compounds and test organisms must be considered, and the biochemical sites and mechanisms of interaction must be evaluated, even for compounds that appear to be inactive. Once active compounds have been identified, their release, movement, uptake, and effects on source and target species in the allelopathic system should be examined. The effects of plant density require additional investigation. Studies in which plants are grown in various combinations and ratios can ultimately provide information about the major sources of allelopathic interaction in communities, the role of allelopathy in succession, and the nature and extent of coadaptation of organisms. Understanding the role of allelopathy in succession will require information about the chemistry and biology of interactions, and a better understanding of the ecological factors involved. Agricultural systems can supply much needed information, as they are similar to natural systems but usually are simpler and better defined. In turn, a better understanding of allelopathy is important in many phases of modern agriculture, especially in the tropics. By attacking allelopathic interactions at several organizational levels, the effects collectively known as allelopathy can be understood, even in complex natural communities. Major advancement in understanding allelopathy will be accomplished only by the combined effort of investigators from many disciplines.

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Inhibition of cucumber leaf expansion by ferulic acid in split-root experiments

Cited by 34 publications

References 10 publications

Effects of exogenously applied ferulic acid, a potential allelopathic compound, on leaf growth, water utilization, and endogenous abscisic acid levels of tomato, cucumber, and bean

Effects of exogenously applied ferulic acid, a potential allelopathic compound, on leaf growth, water utilization, and endogenous abscisic acid levels of tomato, cucumber, and bean

Effects of Pollinators, Herbivores, and Seed Predators on Flowering Phenology

Chemistry and Mechanisms of Allelopathic Interactions

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