Intrinsic and Extrinsic Factors Affecting the Production of Secondary Plant Products

Flück, H

doi:10.1016/b978-0-12-395540-1.50011-7

Cited by 30 publications

(11 citation statements)

References 20 publications

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“…Diurnal studies on Pelargonium roseum have revealed the importance of temperature on percentage yield of leaf oils (Yoshida, 1958). This is confirmed by Flueck (1963), who points out that the analytical results of such a study are always a measure of the balance between the production and the breakdown and/or volatilization of the compounds in question. alcohol C 150H (no.…”

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confidence: 79%

Variations in the Leaf Oils of Three Species of Juniperus

Tatro

Scora

Vasek

et al. 1973

American J of Botany

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Leaf oils from Juniperus occidentalis, J. osteosperma, and J. califomica were analyzed qualitatively and quantitatively for characteristic chemical composition. Seasonal, diurnal, and local microcline variation was quantified. Neither microcline nor seasonal variation appeared to have a significant effect on the leaf oil composition, although some variation was observed. A definite trend toward diurnal cycling was detected and tentatively linked to air temperature fluctuation from dawn to dark.

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confidence: 79%

Variations in the Leaf Oils of Three Species of Juniperus

Tatro

Scora

Vasek

et al. 1973

American J of Botany

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“…Direct correlations between soil nitrogen and nitrogenous secondary substances such as alkaloids have been demonstrated within individual species (Atropa belladonna, Cromwell 1937; Nicotiana tabacum, Datura The following variables failed to meet the 0.5 significance level for entry into the model: soil moisture, soil pH, N03nitrogen, NH3-nitrogen, total nitrogen, phosphorus, potassium, magnesium. stramonium, Boshart 1931, Fliick andNisoli 1954, Schermeister et al 1%0), and nitrogen fertilization is often associated with enhanced secondary chemical production, ostensibly due to enhanced metabolism in general (Fliick 1963). However, soil nitrogen has never been related to the number of biosynthetically distinct pathways operating within a plant.…”

Section: Distribution Of Furanocoumarins Among Umbelliferaementioning

confidence: 99%

Patterns of Furanocoumarin Distribution and Insect Herbivory in the Umbelliferae: Plant Chemistry and Community Structure

Berenbaum

1981

Ecology

176

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A chemical survey of 12 species of Umbelliferae in Tompkins County, New York, USA, revealed that species possessing furanocoumarins are most frequently found in open habitats: either swamps or thickets (Sium, Cicuta, Angelica spp.) or disturbed areas such as roadsides or old fields (Conium, Pastinaca, Heracleum spp.). Woodland species (Osmorhiza, Ziza spp.) characteristically lack furanocoumarins, though they may possess dihydrofuranocoumarin glycosides. Restriction of furanocoumarin production to plants in high—light environments is in keeping with the presumed mechanism of furanocoumarin phototoxicity towards insects, that is, ultraviolet—activated cross linkage of insect DNA. Cluster analysis of the insects on these umbellifers demonstrates that insect herbivores distribute themselves according to host furanocoumarin chemistry. By using a weighting factor that takes into consideration the differential discriminatory powers of specialists and generalists, it was possible to show that the insect faunae of plants containing angular furanocoumarins are more similar to each other than they are to the faunae of plants lacking angular furanocoumarins. The same case holds for the faunae of plants containing linear furanocoumarins, and for plants lacking furanocoumarins altogether. The chemical complexity of a plant species is reflected in the degree of dietary specialization of its insect associates; the more complex the furanocoumarin chemistry, as measured by the number and type of structures, the more specialized the feeding habits of the insects on the plant. Thus, plants lacking furanocoumarins have faunae dominated by generalists while plants with both linear and angular furanocoumarins have faunae dominated by extreme specialists. On the community level, then, it appears that furanocoumarin chemistry can account for patterns in distribution and abundance of insect herbivores on Umbelliferae.

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“…It is suggested that monoterpenes may serve as substrates for energy metabolism in the secretory cells after other stored substrates have been depleted. In the case of monoterpenes, diurnal fluctuations in the amount of essential oil have been reported in some plants, notably in Salvia officinalis (sage) (9,18). The authors assumed that the decrease in essential oil was due to evaporation and res,inification.…”

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confidence: 99%

“…Waller and co-workers (22) In the case of monoterpenes, diurnal fluctuations in the amount of essential oil have been reported in some plants, notably in Salvia officinalis (sage) (9,18). The authors assumed that the decrease in essential oil was due to evaporation and res,inification.…”

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confidence: 99%

Evidence for Metabolic Turnover of Monoterpenes in Peppermint

1969

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Abstract. Two types of experimental evidenc2 are presented which suggest that the monoterpenes of peppermint (Mentha piperita L.) are subject to metabolic turnover. In kinetic studies with 14CO.,, peppermint cuttings rapidly incorporate label into the monoterpenes and then lose most of the label from the monoterpenes, without corresponding changes in the amount of monoterpenes present. When peppermint plants are grown in a oontrolled environment (16-hr photoperiod, 240 day, 80 night) and analyzed at intervals leaf pair by leaf pair, there is a steady increase in monoterpenes until the time of floral initiation, followed by a rapid decrease. It is suggested that monoterpenes may serve as substrates for energy metabolism in the secretory cells after other stored substrates have been depleted. In the case of monoterpenes, diurnal fluctuations in the amount of essential oil have been reported in some plants, notably in Salvia officinalis (sage) (9,18). The authors assumed that the decrease in essential oil was due to evaporation and res,inification. However, metabolic turnover is an alternate possibility. Sukhov (21) fed 14CO0 to a whole pine tree and reported that label in the monoterpenes reached a peak in 13 davs and then declined. Nicholas (15) fed 2-l4C-mevalonate to cuttings of OcimUmi basilicumn (sweet biasil) and found that radioactivity in the steam-volatile fraction reached a mlaximum after 1 hr and then decreased rapidly.We wish to report evidence for rapid metabolic turnover of monoterpenes in peppermint (Mlelthla piperita L.).

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Intrinsic and Extrinsic Factors Affecting the Production of Secondary Plant Products

Cited by 30 publications

References 20 publications

Variations in the Leaf Oils of Three Species of Juniperus

Variations in the Leaf Oils of Three Species of Juniperus

Patterns of Furanocoumarin Distribution and Insect Herbivory in the Umbelliferae: Plant Chemistry and Community Structure

Evidence for Metabolic Turnover of Monoterpenes in Peppermint

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