Comparison between extraction methods of photosynthetic pigments in Acacia mangium

Siebeneichler, Susana Cristine; Barbosa, Jacqueline Silva; Cruz, Antônio Marcos Milhomem; Ramos, Marilene Alves Dias; Fernandes, Hallefy Elias; Nascimento, Vitor L.

doi:10.26814/cps2019001

Cited by 19 publications

(10 citation statements)

References 13 publications

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“…However, it appears that natural dyes content varied qualitatively and quantitatively from one species to another of the same genus, this can be attributed to the genetic fingerprint characterising each plant 30 . This yield varied also according to other factors such as plant organ, conditions of drying and nature or polarity of the solvent used 31 …”

Section: Resultsmentioning

confidence: 99%

Natural colourants analysis and biological activities. Association to molecular markers to explore the biodiversity of Opuntia species

Salem

Lamine

Damergi

et al. 2020

Phytochemical Analysis

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Introduction: Synthetic colourants are subject to various allergies. As a result, the use of plant-based additives has proved promising. Objective: It is in this perspective that our objective was undertaken to investigate natural colourants from edible cactus. Opuntia species populations were singlesequence repeat (SSR) fingerprinted, the analysis of betalains and phenolic compounds and the evaluation of their biological potentials were also characterised. Results: Photometric quantification of betalains and phenols showed an interspecific variation across Opuntia species. Opuntia ficus indica fruits showed the highest betalain [betaxanthins; 843.67 and betacyanins; 1400 mg/100 g dry weight (DW)] and polyphenol contents. Reversed-phase high-performance liquid chromatography (RP-HPLC) analysis showed that the variation of individual phenols profile was influenced by interspecific and genetic factors. Isorhamnetin-O-(di-deoxyhexosylhexoside) was the major compound and its content varied according to Opuntia species, while catechol was the predominant phenolic compound in O. humifusa with 1.88 μg/g DW. Concerning cactus species, Opuntia colourants exhibited a potent antiradical activity [half maximal inhibitory concentration (IC 50) up to 1 μg/mL]. Opuntia species were effective against Gram-positive and Gram-negative bacterial strains [inhibition zone (IZ) up to 27 mm]. A high genetic diversity within Opuntia genotypes based on SSR markers was revealed. UPGMA (unweighted pair group method with arithmetic mean) dendrogram and PCoA (principal coordinate analysis) based on natural pigments and antimicrobial profiles indicated significant variation. The correlation approach proved the presence of a probably metabolic relationship between genetic markers, pigments and their biological activities. Conclusion: A possible association between molecular approach and metabolic profile analysis of Opuntia allows tracing the relationship among species for its genetic conservation.

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Section: Resultsmentioning

confidence: 99%

Natural colourants analysis and biological activities. Association to molecular markers to explore the biodiversity of Opuntia species

Salem

Lamine

Damergi

et al. 2020

Phytochemical Analysis

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“…A pot experiment was performed to evaluate the effect of honokiol on tobacco black shank development. Chlorophyll content and total sugar content were estimated following the methods described by Siebeneichler et al (2019). Root vigor was tested using the measurement of respiratory activity with triphenyltetrazolium chloride, as described by Liu et al (2021a).…”

Section: Effects Of Honokiol On Tobacco Black Shank Disease Under Fie...mentioning

confidence: 99%

Extraction of honokiol from Artemisia argyi and in vitro and in vivo investigation of its antifungal activity

Wang

Han

Wang³

et al. 2022

Natural Product Research

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Extracts from plants used in Chinese medicine can be good sources of fungicides for agricultural applications. In this study, we separated and identified antifungal compounds from four traditional Chinese medicine extracts and evaluated their antifungal activities in vitro and in vivo. In vitro, honokiol extracted from Artemisia argyi showed broad-spectrum antimicrobial and mycelial inhibitory activity with EC50 in the range 3.56 -33.85 μg/mL against eight plant pathogens. q-PCR indicated that honokiol might induce cell cancerization and inhibit cellular respiration, which provided significant insights into honokiol function in tobacco resistance to molecular mechanisms of the phytopathogenic fungus Phytophthora nicotianae. In vivo, honokiol significantly decreased the rate of fungal infection in eggplants, potatoes, grapes, cherry tomatoes, and cucumbers, and enhanced disease resistance in tobacco.Overall, our results indicate that honokiol has the potential to control a variety of fungal and oomycete diseases, and A. argyi could be a source of honokiol.

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“…The lowest Chl-a concentration (0.03 mg L −1 ) was recorded in the 2013 sample at 2 m, increasing to 3.58 and 4.17 mg L −1 in 2018 and 2019, respectively, at the same depth (2 m). These differences are probably due to the different protocols used, with the fluorometric method [36] used in years 2016-2019 being much more sensitive [61]. 1).…”

Section: Physical and Biogeochemical Variables Of Late Summer Seawate...mentioning

confidence: 99%

Dark Diazotrophy during the Late Summer in Surface Waters of Chile Bay, West Antarctic Peninsula

et al. 2022

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Although crucial for the addition of new nitrogen in marine ecosystems, dinitrogen (N2) fixation remains an understudied process, especially under dark conditions and in polar coastal areas, such as the West Antarctic Peninsula (WAP). New measurements of light and dark N2 fixation rates in parallel with carbon (C) fixation rates, as well as analysis of the genetic marker nifH for diazotrophic organisms, were conducted during the late summer in the coastal waters of Chile Bay, South Shetland Islands, WAP. During six late summers (February 2013 to 2019), Chile Bay was characterized by high NO3− concentrations (~20 µM) and an NH4+ content that remained stable near 0.5 µM. The N:P ratio was approximately 14.1, thus close to that of the Redfield ratio (16:1). The presence of Cluster I and Cluster III nifH gene sequences closely related to Alpha-, Delta- and, to a lesser extent, Gammaproteobacteria, suggests that chemosynthetic and heterotrophic bacteria are primarily responsible for N2 fixation in the bay. Photosynthetic carbon assimilation ranged from 51.18 to 1471 nmol C L−1 d−1, while dark chemosynthesis ranged from 9.24 to 805 nmol C L−1 d−1. N2 fixation rates were higher under dark conditions (up to 45.40 nmol N L−1 d−1) than under light conditions (up to 7.70 nmol N L−1 d−1), possibly contributing more than 37% to new nitrogen-based production (≥2.5 g N m−2 y−1). Of all the environmental factors measured, only PO43- exhibited a significant correlation with C and N2 rates, being negatively correlated (p < 0.05) with dark chemosynthesis and N2 fixation under the light condition, revealing the importance of the N:P ratio for these processes in Chile Bay. This significant contribution of N2 fixation expands the ubiquity and biological potential of these marine chemosynthetic diazotrophs. As such, this process should be considered along with the entire N cycle when further reviewing highly productive Antarctic coastal waters and the diazotrophic potential of the global marine ecosystem.

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Comparison between extraction methods of photosynthetic pigments in Acacia mangium

Cited by 19 publications

References 13 publications

Natural colourants analysis and biological activities. Association to molecular markers to explore the biodiversity of Opuntia species

Natural colourants analysis and biological activities. Association to molecular markers to explore the biodiversity of Opuntia species

Extraction of honokiol from Artemisia argyi and in vitro and in vivo investigation of its antifungal activity

Dark Diazotrophy during the Late Summer in Surface Waters of Chile Bay, West Antarctic Peninsula

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