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. 2005 Apr;3(2):245-59.
doi: 10.2201/nonlin.003.02.006.

Whole-range assessment: a simple method for analysing allelopathic dose-response data

Min An  1 , J E Pratley, T Haig, D L Liu
Affiliations

Whole-range assessment: a simple method for analysing allelopathic dose-response data

Min An et al. Nonlinearity Biol Toxicol Med. 2005 Apr.

Abstract

Based on the typical biological responses of an organism to allelochemicals (hormesis), concepts of whole-range assessment and inhibition index were developed for improved analysis of allelopathic data. Examples of their application are presented using data drawn from the literature. The method is concise and comprehensive, and makes data grouping and multiple comparisons simple, logical, and possible. It improves data interpretation, enhances research outcomes, and is a statistically efficient summary of the plant response profiles.

Keywords: Hormesis; allelochemical(s); allelopathy; benzoxazinoids; biological response; inhibition index; mathematical modelling; phenolic compounds.

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Figures

FIGURE 1
FIGURE 1
Effect of BOA, MBOA, DIBOA, and DIMBOA on the activity of H+ -ATPase (after Friebe et al., 1997)
FIGURE 2
FIGURE 2
Diagrammatic representation of biological response to allelochemical concentrations or equivalent. The shaded section represents the inhibition area. CT — the threshold concentration for causing inhibition.
FIGURE 3
FIGURE 3
Dose-responses of ryegrass seedlings to four benzoxazinoids (data from Huang et al., 2003)
FIGURE 4
FIGURE 4
Effect of DIBOA on seedling growth (data from Schulz et al., 1994)
FIGURE 5
FIGURE 5
Effect of ferulic acid on seedling growth (data from Schulz et al., 1994)
FIGURE 6
FIGURE 6
The effect of various concentrations of parthenium extracts on root growth of corn, ryegrass, velvetleaf, and wheat (after Mersie and Singh, 1987)
FIGURE 7
FIGURE 7
Effect of rice density and variety on arrowhead root growth (after Seal et al., 2004; Seal personal communication, 2005)
FIGURE 8
FIGURE 8
Comparison between inhibition index analysis and principal component analysis for a combination of germination and seedling length (after An et al., 1997). Letters denote the names of test species and cultivars.
See this image and copyright information in PMC

References

    1. Ahn JK, Chung IM. Allelopathic potential of rice hulls on germination and seedling growth of barnyardgrass. Agronomy Journal. 2000;92:1162–1167.
    1. An M, Johnson IR, Lovett JV. Mathematical modelling of allelopathy: biological response to allelochemicals and its interpretation. Journal of Chemical Ecology. 1993;19:2379–2388. - PubMed
    1. An M, Pratley JE, Haig T. Phytotoxicity of vulpia residues: I. Investigation of aqueous extracts. Journal of Chemical Ecology. 1997a;23:1979–1995.
    1. An M, Pratley JE, Haig T, Jellett P. Genotypic variation of plant species to the allelopathic effects of vulpia residues. Australian Journal of Experimental Agriculture. 1997b;37:647–660.
    1. An M, Pratley JE, Haig T. Phytotoxicity of vulpia residues: II. Separation, identification and quantitation of allelochemicals from the residue. Journal of Chemical Ecology. 2000;26:1465–1471.

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