First report of naturalization of Houttuynia cordata Thunb. 1783 (Piperales: Saururaceae) in South America

Alves, Ruy José Válka; Medeiros, Débora; Moura, Ricardo Loyola de; Gusmão, Luiza Carla Trindade de; Silva, Nílber Gonçalves da; Antunes, Kelly Kunkel; Matozinhos, Carolina Nazareth; Blanco, Mario A.

doi:10.15560/9.3.642

Cited by 5 publications

(4 citation statements)

References 4 publications

(5 reference statements)

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“…An antagonistic interaction against E. coli has been reported for myrcene-penicillin combination [ 65 ]. Myrcene is a monoterpene present in different percentages in EOs isolated from hemp ( Cannabis sativa L., Cannabaceae) (21%–35%) [ 69 ], hop ( Humulus lupulus L., Cannabaceae) (6%–10%) [ 70 ], chameleon plant/Chinese lizard tail/fishwort/heartleaf ( Houttuynia cordata Thunb., Saururaceae) (up to 30.8%) [ 71 , 72 ] and lemon grass ( Cymbopogon citratus (DC.) Stapf., Poaceae) (3%–8%) [ 73 ].…”

Section: Essential Oils and Volatile Compounds Modulating Antibiotmentioning

confidence: 99%

Essential Oils and Their Components as Modulators of Antibiotic Activity against Gram-Negative Bacteria

et al. 2016

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Gram-negative bacteria cause infections that are difficult to treat due to the emergence of multidrug resistance. This review summarizes the current status of the studies investigating the capacity of essential oils and their components to modulate antibiotic activity against Gram-negative bacteria. Synergistic interactions are particularly discussed with reference to possible mechanisms by which essential oil constituents interact with antibiotics. Special emphasis is given to essential oils and volatile compounds that inhibit efflux pumps, thus reversing drug resistance in Gram-negative bacteria. In addition, indifference and antagonism between essential oils/volatile compounds and conventional antibiotics have also been reported. Overall, this literature review reveals that essential oils and their purified components enhance the efficacy of antibiotics against Gram-negative bacteria, being promising candidates for the development of new effective formulations against Gram-negative bacteria.

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Section: Essential Oils and Volatile Compounds Modulating Antibiotmentioning

confidence: 99%

Essential Oils and Their Components as Modulators of Antibiotic Activity against Gram-Negative Bacteria

et al. 2016

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“…This arrangement aimed to create 3 distinct light intensities for the treatments. The first group (control) experienced 50 % of the sunlight intensity (mimicking H. cordata's sciophilous nature [10]), the high light group received full sunlight intensity, and the low light group received 20 % of the natural light intensity. The 50 and 20 % natural irradiance were achieved by installing 1 and 2 layers of the net, respectively, while the full intensity of natural light was attained by growing the plants without netting cover [8].…”

Section: Plant Materials and Light Treatmentsmentioning

confidence: 99%

Metabolomic and Growth Responses of Houttyunia cordata to Varying Light Intensities and Subsequent Effects on Fermented Products

Boonchaisri,

Mokoed,

Phuangchaona

et al. 2024

Trends Sci

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Suitable light intensities were studied to enable sustainable and efficient cultivation of Houttuynia cordata with a high yield of bioactive compounds which later can be a good quality material for fermentation. To achieve this goal, the evaluation of physiological adaptation and elucidation of the metabolic alterations of Houttuynia cordata in response to different light intensities were conducted. Four-month-old H. cordata was exposed to 3 different light intensities: high light, control, and low light (100, 50 and 20 % natural irradiances, respectively). Physiological responses were measured using leaf gas exchange. The same leaf samples were either methanolic extracted for LC-QTOF-MS analysis to generate metabolite fingerprints or fermented for 3 months prior to quercetin quantification. High light treatment had the greatest effects on both the physiology and metabolisms of H. cordata compared to control and low light treatments. Compared to the control, the key results observed in high-light-grown H. cordata were a significant increase in photosynthesis, a decrease in relative chlorophyll contents, the enrichment of the top 3 metabolic pathways (phenylpropanoid biosynthesis, pyruvate metabolism and fatty acid degradation) and increasing quercetin concentrations in both fresh and fermented leaves. Metabolite fingerprints of high light-grown H. cordata were distinctively different from those of the other 2 treatments according to PCA and hierarchical clustering analysis. In conclusion, H. cordata responded to high light intensity by enriching the phenylpropanoid biosynthetic pathway to elevate sunscreen pigments. Additional acetyl-CoA generated from pyruvate metabolism and fatty acid degradation was a key supporting factor in the above response. As high quercetin concentration was observed in both fresh and fermented leaves, this will lead to quality improvement of the fermented products. HIGHLIGHTS The remarkable effects of light intensities on Houttuynia cordata growth and abundance of bioactive compounds are substantial, but the underlying mechanism has never been investigated. Metabolomics technology was applied to gain insight into light-induced metabolic reconfiguration. GRAPHICAL ABSTRACT

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“…In India, it is mainly distributed in North-Eastern states including Assam, Meghalaya, Manipur, Tripura, Mozoram, Arunachal Pradesh and Sikkim (Bhattacharyya and Sharma 2010 ). The plant prefers to grow in moist and shady habitat (Alves et al 2013 ; Wei and Wu 2012 ). A study conducted in North-East India has indicated that the plant requires a special moist habitat having clay loam soil with higher organic carbon (0.85 ± 0.05%), average soil pH 5.9 and 78% soil moisture (Bhattacharyya and Sharma 2010 ).…”

Section: Introductionmentioning

confidence: 99%

“…The leaves are heart-shaped, cordate with a sheathing base, measuring up to 10 cm long and 6 cm wide, usually green but can turn into purplish colour when exposed to sunlight. The fruits are tiny (2–3 mm long) with 9 to 18 apomictic seeds in each (Alves et al 2013 ). Sexual reproduction has not been reported for this plant (Wei and Wu 2012 ).…”

Section: Introductionmentioning

confidence: 99%

Genetic Diversity and Population Structure of a Medicinal Herb Houttuynia cordata Thunb. of North-East India

Gupta

Bharalee

2020

Plant Mol Biol Rep

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Intra-species genetic variability assessment is an effective tool in formulating genetic improvement and germplasm conservation strategies. Houttuynia cordata Thunb. is a semidomesticated medicinal herb consumed widely in traditional diet in North-Eastern India. In the present study, an effort has been made to assess the genetic diversity of H. cordata Thunb. from Brahmaputra valley of North-East India. A total of 545 genotypes from 18 populations of H. cordata Thunb. from four different regions, i.e. North-East, North-West, South-East and South-West, with respect to river Brahmaputra were collected and population genetic diversity and structure were analysed using ISSR molecular markers. Population genetic structure analysis using unweighted pair group method with averages (UPGMA)-based hierarchical cluster analysis, principal coordinate analysis (PCoA) and model-based clustering in STRUCTURE program revealed that the population of H. cordata Thunb. grouped according to regional distribution and forms four genetically distinct clusters. The analysis of molecular variance showed that differentiation among regions was significant with 60% genetic variation among region, 3% genetic variation among population within region and 37% genetic variation within population. We found wide variation in Nei’s gene diversity (Hj) ranging from 0.07782 in Margherita population to 0.13634 in Barapani population. Furthermore, Nei’s gene diversity within population (Nei’s Hs) and total gene diversity (Ht) were found to be 0.1081 and 0.1769 respectively. The genetic differentiation among 18 population was high (Fst = 0.3894; p < 0.001) with relatively restricted gene flow (Nm = 0.6564). Based on the result of this study, we suggest ex situ conservation could be an appropriate measure to adequately capture the total genetic diversity of H. cordata Thunb. populations of North-East India by selecting few individuals from different populations. Supplementary Information The online version contains supplementary material available at 10.1007/s11105-020-01260-9.

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First report of naturalization of Houttuynia cordata Thunb. 1783 (Piperales: Saururaceae) in South America

Cited by 5 publications

References 4 publications

Essential Oils and Their Components as Modulators of Antibiotic Activity against Gram-Negative Bacteria

Essential Oils and Their Components as Modulators of Antibiotic Activity against Gram-Negative Bacteria

Metabolomic and Growth Responses of Houttyunia cordata to Varying Light Intensities and Subsequent Effects on Fermented Products

Genetic Diversity and Population Structure of a Medicinal Herb Houttuynia cordata Thunb. of North-East India

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