Similar structural complexity of phenols in plant morphotypes with contrasting soluble phenol concentration and richness in arid rangelands of Patagonia

H, SARAVÍ CISNEROS; MB, BERTILLER; JJP, FURLONG; AL, CARRERA

doi:10.1016/j.flora.2022.152134

Cited by 3 publications

(10 citation statements)

References 61 publications

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“…Shrub species with high concentrations of defense chemicals such as soluble phenols mostly dominate the plant cover in arid ecosystems (Friedman, 1995; Saraví Cisneros et al., 2013, 2022; Segesso et al., 2019). Both canopies and propagules of shrubs may release compounds in their neighborhood affecting the quality of regeneration microsites for perennial grass propagule germination in arid rangelands (Bewley et al., 2013; Segesso et al., 2019).…”

Section: Discussionmentioning

confidence: 99%

“…We selected two long‐lived evergreen shrub species ( Larrea divaricata and Schinus johnstonii ; http://www.floraargentina.edu.ar) with strong xeromorphic traits (Carrera et al., 2009), high phenol content, and different phenolic profiles. Larrea divaricata has a strong prevalence of phenolic compounds of medium complexity and S. johnstonii shows an even representation of phenolic compounds of different structural complexity, including compounds of a complex structure not present in L. divaricata (Saraví Cisneros et al., 2013, 2022). These shrub species persist and/or increase in abundance in heavily grazed areas because they are not preferred by herbivores (Bisigato & Bertiller, 1997) although they might be consumed during periods of very low perennial grass availability (Baldi et al., 2004).…”

Section: Methodsmentioning

confidence: 99%

“…We assessed the soluble phenol concentration in soil from plant patches, inert soil, and filter paper extracts using the Folin–Ciocalteu method (Saraví Cisneros et al., 2022). Total N and C concentrations were assessed by combustion on a LECO‐CN628 (Bosco et al., 2018).…”

Section: Methodsmentioning

confidence: 99%

“…Among these secondary compounds, soluble phenols and alkaloids are widely distributed in plants and may be released through the decomposition of organic matter and/or be leached from canopies, litter, and propagules during rain, having different effects on plants and soil microorganisms (Reigosa et al., 2006; Segesso et al., 2019). There is evidence that the type of secondary compound accumulated in coexisting shrub species could vary depending on intrinsic species attributes (Saraví Cisneros et al., 2022). For example, evergreen shrub species with deep roots that persist in disturbed and stressful environments in arid rangelands of the Patagonian Monte, such as Larrea divaricata and Schinus johnstonii , have high concentrations of soluble phenols (Saraví Cisneros et al., 2013).…”

Section: Introductionmentioning

confidence: 99%

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Effects of neighbor shrub propagules and soils from shrubby patches on perennial grass germination in arid rangelands of the Patagonia Monte, Argentina

Muñoz,

Carrera,

Bertiller

et al. 2024

J Vegetation Science

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QuestionDo shrubs negatively affect the germination of perennial grass species in regeneration microsites? We experimentally analyzed the effect of soils from plant patches dominated by two shrub species (Larrea divaricata and Schinus johnstonii) and their propagules on the germination of three co‐dominant herbivore‐preferred perennial grass species (Poa ligularis, Nassella tenuis and Pappostipa speciosa).LocationPatagonian Monte, Chubut Province, Argentina (42°07′ S, 64°59′ W; 43°06′ S, 65°43′ W; 42°29′ S, 66°34′ W).MethodsWe conducted two simultaneous microcosm experiments. In the first experiment, we sowed perennial grass propagules of the three species alone and combined with non‐scarified shrub propagules in Petri dishes with three substrate types (filter paper, inert soil and soil from shrub patches). In the second experiment, we sowed perennial grass propagules of each species combined with scarified and non‐scarified propagules of both shrub species in Petri dishes with soil taken from plant patches dominated by L. divaricata and by S. johnstonii. Both experiments lasted 3 months. We calculated the germination proportion and mean germination time (MGT) of propagules for each perennial grass species in each treatment.ResultsPropagules from neighboring shrubs had a clearer negative effect on grass germination compared with shrub soils. Shrub propagules negatively affected the germination proportion of P. ligularis and N. tenuis, and induced longer MGT in the three perennial grass species. The combination of S. johnstonii soil and propagules negatively affected P. ligularis and P. speciosa germination. The combination of L. divaricata soil and scarified propagules completely inhibited P. speciosa germination.ConclusionsOur results highlighted the complexity of interactions between shrubs with high phenolic contents (soils and propagules) and the germination of perennial grass species in arid environments. Schinus johnstonii soil and propagules had stronger effects on perennial grass germination than L. divaricata soil and propagules. The negative effects of shrubs on microsite quality and germination processes depended on the specific shrub/grass interaction.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of neighbor shrub propagules and soils from shrubby patches on perennial grass germination in arid rangelands of the Patagonia Monte, Argentina

Muñoz,

Carrera,

Bertiller

et al. 2024

J Vegetation Science

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“…For example, pigments, alkaloids, polyphenols, and other compounds that may be involved in multiple defensive systems, i.e. UV absorption, tolerance to drought, thermal protection (low-high temperature), defence against herbivores or pathogens or plants, soil microbial activity, soil organic matter decomposition and mineralization, ability of shrubs to capture soil water and to leaf turnover, among others (Oliva et al, 1993;Hartley & Jones, 1998;Souto et al, 2000;Saraví Cisneros et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Comparison of two morphotypes of Zuccagnia punctata (Fabaceae) from Valles Calchaquíes in Argentina

Álvarez

Uriburu

Barrera

et al. 2023

Darwiniana, nueva serie

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Zuccagnia punctata Cav. (Fabaceae) is a medicinal aromatic shrub, a monotypic species with a wide distribution in Argentina. Two morphotypes were found in Valles Calchaquíes, one with yellow fruits (YF) and other with red-brown fruits (RBF). The color of fruits varies between individuals within a population, with some plants producing red-brown fruits and other yellow fruits. The cytogenetic differentiation was determined using root tips. Leaves and fruits were used to analyze chemical composition by HPLC-DAD and HPLC/MS/MS. The number of chromosome (2n = 24) was reported for the first time for the genus. The yellow fruits and red-brown fruits morphotypes showed different karyotypes. The compounds common to both morphotypes were identified in leaves and fruits as chalcones, compounds with biological activity and biomarkers used for quality control of Z. punctata products. Two chemotypes related to the color of the fruits, were detected. An anthocyanin, cyanidin 3-glucoside was found in red-brown fruits (4.75 mg.g-1 fruits) but not in yellow fruits. These is the first report on yellow fruits morphotype of Z. punctata and on presence of anthocyanins in Z. punctata red-brown fruits morphotype. This work contributes to the knowledge of Z. punctata, a native plant from Argentina with high economic potential to promote the regional economy.

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Therapeutic Potential of Phenolic Compounds in Medicinal Plants—Natural Health Products for Human Health

2023

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Phenolic compounds and flavonoids are potential substitutes for bioactive agents in pharmaceutical and medicinal sections to promote human health and prevent and cure different diseases. The most common flavonoids found in nature are anthocyanins, flavones, flavanones, flavonols, flavanonols, isoflavones, and other sub-classes. The impacts of plant flavonoids and other phenolics on human health promoting and diseases curing and preventing are antioxidant effects, antibacterial impacts, cardioprotective effects, anticancer impacts, immune system promoting, anti-inflammatory effects, and skin protective effects from UV radiation. This work aims to provide an overview of phenolic compounds and flavonoids as potential and important sources of pharmaceutical and medical application according to recently published studies, as well as some interesting directions for future research. The keyword searches for flavonoids, phenolics, isoflavones, tannins, coumarins, lignans, quinones, xanthones, curcuminoids, stilbenes, cucurmin, phenylethanoids, and secoiridoids medicinal plant were performed by using Web of Science, Scopus, Google scholar, and PubMed. Phenolic acids contain a carboxylic acid group in addition to the basic phenolic structure and are mainly divided into hydroxybenzoic and hydroxycinnamic acids. Hydroxybenzoic acids are based on a C6-C1 skeleton and are often found bound to small organic acids, glycosyl moieties, or cell structural components. Common hydroxybenzoic acids include gallic, syringic, protocatechuic, p-hydroxybenzoic, vanillic, gentistic, and salicylic acids. Hydroxycinnamic acids are based on a C6-C3 skeleton and are also often bound to other molecules such as quinic acid and glucose. The main hydroxycinnamic acids are caffeic, p-coumaric, ferulic, and sinapic acids.

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Similar structural complexity of phenols in plant morphotypes with contrasting soluble phenol concentration and richness in arid rangelands of Patagonia

Cited by 3 publications

References 61 publications

Effects of neighbor shrub propagules and soils from shrubby patches on perennial grass germination in arid rangelands of the Patagonia Monte, Argentina

Effects of neighbor shrub propagules and soils from shrubby patches on perennial grass germination in arid rangelands of the Patagonia Monte, Argentina

Comparison of two morphotypes of Zuccagnia punctata (Fabaceae) from Valles Calchaquíes in Argentina

Therapeutic Potential of Phenolic Compounds in Medicinal Plants—Natural Health Products for Human Health

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