Effect of water stress and nitrogen fertilization on the content of hyoscyamine and scopolamine in the roots of deadly nightshade (Atropa belladonna)

Baričević, Dea; Umek, Andrej; Kreft, Samo; Maticic, B; Zupančič, A.

doi:10.1016/s0098-8472(99)00014-3

Cited by 27 publications

(17 citation statements)

References 8 publications

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“…S1). The addition of phytohormones such as IAA or -3-butyric acid (IBA) (Rout, 2006;Jeong et al, 2007) or changes in nitrogen availability (Baricevic et al, 1999;Cañas et al, 2009) may modify total plant contents in certain categories of secondary metabolites (e.g. total phenolics and alkaloids), but whether they would also lead to different profiles in individual secondary metabolites remains to be determined.…”

Section: Discussionmentioning

confidence: 99%

Host plant secondary metabolite profiling shows a complex, strain‐dependent response of maize to plant growth‐promoting rhizobacteria of the genus Azospirillum

et al. 2010

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Summary• Most Azospirillum plant growth-promoting rhizobacteria (PGPR) benefit plant growth through source effects related to free nitrogen fixation and ⁄ or phytohormone production, but little is known about their potential effects on plant physiology. These effects were assessed by comparing the early impacts of three Azospirillum inoculant strains on secondary metabolite profiles of two different maize (Zea mays) cultivars.• After 10 d of growth in nonsterile soil, maize methanolic extracts were analyzed by reverse-phase high-performance liquid chromatography (RP-HPLC) and secondary metabolites identified by liquid chromatography ⁄ mass spectrometry (LC ⁄ MS) and nuclear magnetic resonance (NMR).• Seed inoculation resulted in increased shoot biomass (and also root biomass with one strain) of hybrid PR37Y15 but had no stimulatory effect on hybrid DK315. In parallel, Azospirillum inoculation led to major qualitative and quantitative modifications of the contents of secondary metabolites, especially benzoxazinoids, in the maize plants. These modifications depended on the PGPR strain · plant cultivar combination.• Thus, Azospirillum inoculation resulted in early, strain-dependent modifications in the biosynthetic pathways of benzoxazine derivatives in maize in compatible interactions. This is the first study documenting a PGPR effect on plant secondary metabolite profiles, and suggests the establishment of complex interactions between Azospirillum PGPR and maize.

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Section: Discussionmentioning

confidence: 99%

Host plant secondary metabolite profiling shows a complex, strain‐dependent response of maize to plant growth‐promoting rhizobacteria of the genus Azospirillum

et al. 2010

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“…Increasing nutrient supplies increased plant biomass, while PA production remained constant. Other studies on the response of plants to nutrient addition found significant changes in concentration of secondary metabolites (Iason & Hester, 1993; Höft et al ., 1996; Baricevic et al ., 1999; Salmore & Hunter, 2001). However, statistical analyses suggest that changes or differences in concentration of allelochemicals can sometimes be explained by changes in tissue biomass only (Koricheva, 1999).…”

Section: Discussionmentioning

confidence: 99%

Nutrients decrease pyrrolizidine alkaloid concentrations in Senecio jacobaea

2003

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Summary• Changes in the defence compounds pyrrolizidine alkaloids (PAs) in roots and shoots of Senecio jacobaea are reported in response to nutrient addition in order to investigate whether changes in concentration are adaptive.• PA concentrations were examined in leaves and roots of 40 vegetative ragwort plants, subjected to four nutrient treatments in a climate chamber study. Roots from 10 plants were subdivided into main root cortex, main root vascular cylinder, lateral roots and root tips and analysed for PA concentrations.• Increasing nutrients lead to a significant reduction in total PA concentration of both roots and shoots. All individual PAs except jacobine decreased in concentration. The total amount of PA produced in the whole plant was not influenced by nutrient supply. Root tips contained a three times lower concentration than the main and lateral roots. The concentrations in the main root cortex were five times higher than concentrations in the vascular cylinder.• Changes in biomass rather than changes in production rates can explain alterations in PA concentration of S. jacobaea in response to nutrients.

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“…[32][33][34][35][36][37][38] In this work with A. purpurea it is shown once again that the secondary metabolism is more complex than initially anticipated. [32][33][34][35][36][37][38] In this work with A. purpurea it is shown once again that the secondary metabolism is more complex than initially anticipated.…”

Section: Discussionmentioning

confidence: 57%

Spatio‐Temporal Variation of Alkaloids in Annona purpurea and the Associated Influence on Their Antifungal Activity

De-la-Cruz-Chacón

Riley‐Saldaña

Arrollo‐Gómez

et al. 2019

Chemistry & Biodiversity

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Annona purpurea grows in the areas of low elevation in deciduous forests of Mexico, those areas have marked rainy and dry seasons. This species produces more than 30 bioactive alkaloids that could have potential in the control of phytopathogens. This research provides data on the variation of the content and number of alkaloids during an annual cycle and the associated inhibitory potential of the compounds against three phytopathogenic fungi. For one year, alkaloidal extracts of stems and leaves were obtained every two months. The extract profiles were determined by gas chromatography with tandem mass spectrometry and their antifungal activity was examined in vitro. The alkaloids, annomontine and oxopurpureine, obtained from the roots and leaves, respectively, were also evaluated individually. The yields, profiles and activities of the extracts, as well as the abundance of annomontine and oxopurpureine in the extracts, were contrasted with the seasonality and phenological phases of the plant. The data indicate that the alkaloid content was higher at the height of the dry season. High yields also occurred during flowering. The strongest inhibitory effect was obtained from the root extracts during the last month of dry season. This finding seems to be explained by the higher chemodiversity of alkaloids in extracts from this season. Annomontine and oxopurpureine inhibited all three phytopathogens; however, they were not solely responsible for the activity of A. purpurea.

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Effect of water stress and nitrogen fertilization on the content of hyoscyamine and scopolamine in the roots of deadly nightshade (Atropa belladonna)

Cited by 27 publications

References 8 publications

Host plant secondary metabolite profiling shows a complex, strain‐dependent response of maize to plant growth‐promoting rhizobacteria of the genus Azospirillum

Host plant secondary metabolite profiling shows a complex, strain‐dependent response of maize to plant growth‐promoting rhizobacteria of the genus Azospirillum

Nutrients decrease pyrrolizidine alkaloid concentrations in Senecio jacobaea

Spatio‐Temporal Variation of Alkaloids in Annona purpurea and the Associated Influence on Their Antifungal Activity

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