Changes in<i>Senecio grisebachii</i>pyrrolizidine alkaloids abundances and profiles as response to soil quality

Grass, M. A. Yaber; Leicach, Silvia R.

doi:10.1080/17429145.2011.591504

Cited by 15 publications

(11 citation statements)

References 26 publications

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“…S. vulgaris qualitatively displays a similar PA profile as S . vernalis [68] and our studies have confirmed that the quality of the PA profile of S. vulgaris differs markedly from many other species of the Senecioneae tribe during ontogenesis [22,23,24,27,28,30,31,33,36,42,43,46,69,70,71]. Respective to the concentrations of specific PAs in S. vulgaris , our study has clearly shown that they were dependent on the growth and the developmental stage of the plant.…”

Section: Discussionsupporting

confidence: 74%

“…Various factors can contribute to qualitative [22,23,24,25,26,27,28,29,30,31] as well as quantitative [15,22,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46] parameters of the PA synthesis/metabolism in Senecio species, leading to diverse overall PA spectra in these plant species [47]. On grounds of the wide occurrence of S. vulgaris in economically used plant cultures [7,14,15,48,49], qualitative as well as quantitative changes in the PA spectrum of this plant lead to different contamination scenarios, that may have a great impact on potential risks for humans and animals [36,46]. Furthermore, it is known that PA contaminations are often the reason for spot contamination in distinct charge numbers [50,51,52].…”

Section: Introductionmentioning

confidence: 99%

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Occurrence of Nine Pyrrolizidine Alkaloids in Senecio vulgaris L. Depending on Developmental Stage and Season

Flade

Beschow

Wensch-Dorendorf

et al. 2019

Plants

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The contamination of phytopharmaceuticals and herbal teas with toxic plants is an increasing problem. Senecio vulgaris L. is a particularly noxious weed in agricultural and horticultural crops due to its content of toxic pyrrolizidine alkaloids (PAs). Since some of these compounds are carcinogenic, the distribution of this plant should be monitored. The amount of PAs in S. vulgaris is affected by various factors. Therefore, we investigated the occurrence of PAs depending on the developmental stage and season. A systematic study using field-plot experiments (four seasons, five developmental stages of the plants: S1 to S5) was performed and the PA concentration was determined via LC-MS/MS analysis. The total amount of PAs in the plant increased with the plant development, however, the total PA concentrations in µg/g dry matter remained nearly unchanged, whilst trends for specific PAs were observed. The concentrations of PA-N-oxides (PANOs) were much higher than that of tertiary PAs. Maximal amounts of the PA total were 54.16 ± 4.38 mg/plant (spring, S5). The total amount of PAs increased strongly until later developmental stages. Therefore, even small numbers of S. vulgaris may become sufficient for relevant contaminations set out by the maximal permitted daily intake levels recommended by the European Food Safety Authority (EFSA).

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Section: Discussionsupporting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Occurrence of Nine Pyrrolizidine Alkaloids in Senecio vulgaris L. Depending on Developmental Stage and Season

Flade

Beschow

Wensch-Dorendorf

et al. 2019

Plants

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“…The types and concentrations of allelochemicals produced by plants depend on habitat characteristics, soil type, climate, and density and phenology of allelopathic plants [ 47 , 48 ]. Generally, leaves contain more allelochemicals, as we found and as has been reported in another study [ 49 ], presumably to protect against herbivores and UV radiation [ 50 , 51 ].…”

Section: Discussionmentioning

confidence: 99%

Identification and Phytotoxicity Assessment of Phenolic Compounds in Chrysanthemoides monilifera subsp. monilifera (Boneseed)

et al. 2015

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Chrysanthemoides monilifera subsp. monilifera (boneseed), a weed of national significance in Australia, threatens indigenous species and crop production through allelopathy. We aimed to identify phenolic compounds produced by boneseed and to assess their phytotoxicity on native species. Phenolic compounds in water and methanol extracts, and in decomposed litter-mediated soil leachate were identified using HPLC, and phytotoxicity of identified phenolics was assessed (repeatedly) through a standard germination bioassay on native Isotoma axillaris. The impact of boneseed litter on native Xerochrysum bracteatum was evaluated using field soil in a greenhouse. Collectively, we found the highest quantity of phenolic compounds in boneseed litter followed by leaf, root and stem. Quantity varied with extraction media. The rank of phenolics concentration in boneseed was in the order of ferulic acid > phloridzin > catechin > p-coumaric acid and they inhibited germination of I. axillaris with the rank of ferulic acid > catechin > phloridzin > p-coumaric acid. Synergistic effects were more severe compared to individual phenolics. The litter-mediated soil leachate (collected after15 days) exhibited strong phytotoxicity to I. axillaris despite the level of phenolic compounds in the decomposed leachate being decreased significantly compared with their initial level. This suggests the presence of other unidentified allelochemicals that individually or synergistically contributed to the phytotoxicity. Further, the dose response phytotoxic impacts exhibited by the boneseed litter-mediated soil to native X. bracteatum in a more naturalistic greenhouse experiment might ensure the potential allelopathy of other chemical compounds in the boneseed invasion. The reduction of leaf relative water content and chlorophyll level in X. bracteatum suggest possible mechanisms underpinning plant growth inhibition caused by boneseed litter allelopathy. The presence of a substantial quantity of free proline in the target species also suggests that the plant was in a stressed condition due to litter allelopathy. These findings are important for better understanding the invasive potential of boneseed and in devising control strategies.

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“…Therefore, for a high yield combined with low alkaloid content, the soil pH is of prime importance, although it has to be taken into account that also additional environmental factors, for example, drought stress, fertilization, and temperature, can have an adverse effect on the alkaloid content in lupin seeds. Yaber Grass and Leicach [24] noted that a significant increase in the total alkaloid content was observed from samples of Senecio grisebachii growing in highly deteriorated soil compared to those from samples grown in less deteriorated ones.…”

Section: Resultsmentioning

confidence: 98%

Effect of the Soil pH on the Alkaloid Content ofLupinus angustifolius

Jansen

Jürgens

Schliephake

et al. 2012

International Journal of Agronomy

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Field studies were conducted in growing seasons 2004, 2005, and 2010 to investigate the effect of different soil pH values on the alkaloid content in seeds ofLupinus angustifolius. Two-year experiments with eleven cultivars were carried out in acid soils with an average ofpH=5.8(Mecklenburg-Western Pomerania) and on calcareous soils with an average pH of 7.1 (Bavaria), respectively. In addition, in 2010, eight cultivars were grown in field experiments in soils with pH values varying betweenpH=5.3andpH=6.7. In all experiments conducted on soils with a higher pH (pH=6.7andpH=7.1), a significantly lower alkaloid content was detected in allLupinus angustifoliuscultivars than on soils with a lower pH (pH=5.3andpH=5.8). Results clearly show that the alkaloid content is significantly influenced by the soil pH but genotypic differences regarding the reaction to different pH values in the soil were observed.

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Changes inSenecio grisebachiipyrrolizidine alkaloids abundances and profiles as response to soil quality

Cited by 15 publications

References 26 publications

Occurrence of Nine Pyrrolizidine Alkaloids in Senecio vulgaris L. Depending on Developmental Stage and Season

Occurrence of Nine Pyrrolizidine Alkaloids in Senecio vulgaris L. Depending on Developmental Stage and Season

Identification and Phytotoxicity Assessment of Phenolic Compounds in Chrysanthemoides monilifera subsp. monilifera (Boneseed)

Effect of the Soil pH on the Alkaloid Content ofLupinus angustifolius

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