Only a matter of time: the impact of daily and seasonal rhythms on phytochemicals

Liebelt, Donna J.; Jordan, Juliette T.; Doherty, Colleen J.

doi:10.1007/s11101-019-09617-z

Cited by 56 publications

(41 citation statements)

References 208 publications

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“…CAMP had still a longer summer period, which is common in the region and has already been confirmed in other studies [15,39], the soil is poor in minerals and there is high leaching caused by the water intensity of rainfall [30,40]. Considering the plant-environment relationship interferes with secondary metabolites produced by plants [19,20,24,41,42], these factors together make the plants from CAMP ecosystem to suffer a period of water stress, which does not occur with the TF plants.…”

Section: Resultsmentioning

confidence: 78%

“…The interference of both the environment and drying condition in the concentrations of bioactive compounds from medicinal plants is well documented [24,25]. Despite the increased consumption of Ayahuasca in various extra-Amazonian countries, as well as their described pharmacological and therapeutic potential, yet data establishing the contribution of the environmental effect on the variation of alkaloid content in B. caapi and P. viridis are still to be determined.…”

Section: Graphical Abstract 1 Introductionmentioning

confidence: 99%

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Assessment of environmental condition and drying process of the plants on the concentration of alkaloids and cytotoxicity of traditional Ayahuasca Tea

de¹,

de²,

Oliveira³

et al. 2021

World J. Adv. Res. Rev.

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Introduction: Ayahuasca is a traditional psychoactive tea of Amazonian indigenous, used medicinal and spiritual purposes. Wide variation in the concentration of N,N-dimethyltryptamine (DMT), Harmaline (HRL), Harmine (HRM) and Tetrahydroharmine (THH) alkaloids in Ayahuasca has been reported worldwide. Objective: To evaluate the causes of variations in alkaloids concentrations of Ayahuasca prepared with fresh and dehydrated plants from different environments and determine the best drying method to plants according to alkaloids content and cytotoxicity of Ayahuasca tea. Material and methods: The environment interference on the alkaloids of the two species was evaluated in samples of Ayahuasca tea prepared with fresh plants. The most suitable drying process to the two species was evaluated in sample Ayahuasca tea prepared with plants submitted to drying under the sun conditions and five different temperatures in forced circulation oven. The concentration of the alkaloids determined by high performance liquid chromatography with UV-vis detector with diode array detection (HPLC-DAD). The in vitro cytotoxicity of Ayahuasca was evaluated in human keratinocytes cells (HaCaT) by colorimetric assay. Results: Environmental characteristics, preparation process and temperature of plants drying interfered on DMT, HRL, HRM and THH concentrations of Ayahuasca. No effect cytotoxicity was detected with relationship to psychoactive alkaloids in samples of Ayahuasca tea prepared with fresh or dried plants. Conclusion: Concentration of DMT, HRL, HRM and THH alkaloids in Ayahuasca are influenced by plants environmental. The most suitable drying process was obtained in forced circulation oven at 43 and 45°C to P. viridis leaves and B. caapi stems respectively. The Ayahuasca prepared with fresh or dry plants no showed cytotoxicity in human keratinocytes cells.

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Section: Resultsmentioning

confidence: 78%

Section: Graphical Abstract 1 Introductionmentioning

confidence: 99%

Assessment of environmental condition and drying process of the plants on the concentration of alkaloids and cytotoxicity of traditional Ayahuasca Tea

de¹,

de²,

Oliveira³

et al. 2021

World J. Adv. Res. Rev.

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show abstract

“…The seasonality is a major factor influencing volatile expression (including biosynthesis, storage and emission of VOCs), specially owing to the occurrence of reproductive/vegetative life cycles (phenology), and stress conditions [23–25,34] . In this framework, we performed a seasonal component abundances study on the volatile expression profiles of B. dracunculifolia and B. microdonta during a year using GC‐FID with the aim of evaluating the dynamic of VOCs production and looking for parameters to chemically differentiate both species ( Table 3).…”

Section: Resultsmentioning

confidence: 99%

“…As with most phytochemicals (specialized metabolites), seasonality is a relevant influencing factor on the volatile expression profiles from aromatic plants, reflecting phenology, stress conditions, and biotic interactions [23–25] . Despite it, in the literature on Baccharis L. there are few studies related with the influence of seasonality on the volatile chemical profiles.…”

Section: Introductionmentioning

confidence: 99%

Relationship between Baccharis dracunculifolia DC. and B. microdonta DC. (Asteraceae) by Their Different Seasonal Volatile Expression

Minteguiaga

González

Catalán

et al. 2021

Chemistry & Biodiversity

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Baccharis dracunculifolia DC. and Baccharis microdonta DC. (Asteraceae) are woody species morphologically similar growing in Uruguay, where not taxonomists people often confuse them in field conditions. As the essential oil of B. dracunculifolia (‘vassoura’ oil) is highly prized by the flavor and fragrance industry, the correct differentiation of the two species is a key factor in exploiting them profitably and reasonably. To differentiate both Baccharis species, in this work their volatile expression profiles were studied as an alternative tool to determine authenticity and quality. Volatile organic compounds (VOCs) were monthly extracted during an entire year from aerial parts of wild populations by simultaneous distillation extraction (SDE), and studied by gas chromatography/mass spectrometry (GC/MS; identification) and conventional gas chromatography (GC‐FID; component abundances determination). Enantioselective gas chromatography/mass spectrometry (Es‐GC/MS) was applied in the search of parameters able to ensure genuineness of each species extract. Qualitative VOCs profiles were found to be similar for both species, being β‐pinene, limonene, spathulenol, caryophyllene oxide, and viridiflorol the main components. However, the abundance of those VOCs were two to ten times higher in B. dracunculifolia than in B. microdonta during the year of study. These Baccharis spp. showed species‐specific patterns of VOCs expression according to the seasonality, and interestingly, oxygenated compounds (trans‐pinocarveol and myrtenal) increased their abundances at full‐flowering stages. The enantiomeric distribution of selected monoterpenes (α‐ and β‐pinenes, limonene, linalool, terpinen‐4‐ol, and α‐terpineol) presented differential values for both Baccharis spp., meaning that Es‐GC might be a useful tool for differentiating chemically both species in Uruguay for genuineness determination purposes.

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“…Through synergistic or antagonist mechanisms acting directly or indirectly, these factors all affect the diversity and synchronism of organisms [45,119,120]. In forest ecosystems, this could mean, e.g., changes in the capacity of plants to produce phytochemicals that are responsible for plant chemical defense [121,122] and communication between trophic levels [123][124][125], and increased risk of forest insect pest outbreaks [119]. In boreal forest, photoperiodism becomes an additional constraint for species distribution to the north, because day length reaches a 24 h sunshine period during the growing season at the polar circle [126], even if the temperature constraints are released.…”

Section: Physiological Response To Climate Change Factorsmentioning

confidence: 99%

Functional Role of Extrafloral Nectar in Boreal Forest Ecosystems under Climate Change

Holopainen

Blande

Sorvari

2020

Forests

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Carbohydrate-rich extrafloral nectar (EFN) is produced in nectaries on the leaves, stipules, and stems of plants and provides a significant energy source for ants and other plant mutualists outside of the flowering period. Our review of literature on EFN indicates that only a few forest plant species in cool boreal environments bear EFN-producing nectaries and that EFN production in many boreal and subarctic plant species is poorly studied. Boreal forest, the world’s largest land biome, is dominated by coniferous trees, which, like most gymnosperms, do not produce EFN. Notably, common deciduous tree species that can be dominant in boreal forest stands, such as Betula and Alnus species, do not produce EFN, while Prunus and Populus species are the most important EFN-producing tree species. EFN together with aphid honeydew is known to play a main role in shaping ant communities. Ants are considered to be keystone species in mixed and conifer-dominated boreal and mountain forests because they transfer a significant amount of carbon from the canopy to the soil. Our review suggests that in boreal forests aphid honeydew is a more important carbohydrate source for ants than in many warmer ecosystems and that EFN-bearing plant species might not have a competitive advantage against herbivores. However, this hypothesis needs to be tested in the future. Warming of northern ecosystems under climate change might drastically promote the invasion of many EFN-producing plants and the associated insect species that consume EFN as their major carbohydrate source. This may result in substantial changes in the diet preferences of ant communities, the preventative roles of ants against insect pest outbreaks, and the ecosystem services they provide. However, wood ants have adapted to using tree sap that leaks from bark cracks in spring, which may mitigate the effects of improved EFN availability.

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Only a matter of time: the impact of daily and seasonal rhythms on phytochemicals

Cited by 56 publications

References 208 publications

Assessment of environmental condition and drying process of the plants on the concentration of alkaloids and cytotoxicity of traditional Ayahuasca Tea

Assessment of environmental condition and drying process of the plants on the concentration of alkaloids and cytotoxicity of traditional Ayahuasca Tea

Relationship between Baccharis dracunculifolia DC. and B. microdonta DC. (Asteraceae) by Their Different Seasonal Volatile Expression

Functional Role of Extrafloral Nectar in Boreal Forest Ecosystems under Climate Change

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