Phenolic Compounds: Introduction

Lattanzio, Vincenzo

doi:10.1007/978-3-642-22144-6_57

Cited by 241 publications

(192 citation statements)

References 130 publications

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“…They have a number of biological properties, including antioxidant, antimicrobial (Mansouri et al 2001;Amensour et al 2009), antitumor and antimutagenic properties (Hayder et al 2008). Plant phenolics are biosynthesised by two basic pathways: the shikimic acid pathway and the malonic acid pathway, the former of which is responsible for the synthesis of most phenolic compounds in plants (Lattanzio 2013). They have the capacity to neutralise free radicals and reduce their harmful effects on the human body (Aidi Wannes et al 2010;Goncalves et al 2013;Aleksic and Knezevic 2014;Asgarpanah and Ariamanesh 2015;Bouaziz et al 2015).…”

Section: Introductionmentioning

confidence: 99%

LED lighting affects plant growth, morphogenesis and phytochemical contents of Myrtus communis L. in vitro

Cioć

Szewczyk

Żupnik³

et al. 2017

Plant Cell Tiss Organ Cult

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weight. Photosynthetic pigment levels were lower under LED light compared to control lamps. Phenolic acids and flavonoids were identified in M. communis leaf extracts. Myricetin was the major constituent with highest concentration under red LEDs and highest BA level. Keywords Myrtle · Light quality · Photosynthetic pigments · Secondary metabolites · HPLC Abbreviations LED Light emitting diode B 100% blue LED RB 70% red and 30% blue LED R 100% red LED C Control fluorescent light BA 6-Benzyladenine NAA 1-Naphthaleneacetic acid MS Murashige and Skoog medium HPLC High performance liquid chromatography PPFD Photosynthetic photon flux density Communicated by Sergio J. Ochatt.

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Section: Introductionmentioning

confidence: 99%

LED lighting affects plant growth, morphogenesis and phytochemical contents of Myrtus communis L. in vitro

Cioć

Szewczyk

Żupnik³

et al. 2017

Plant Cell Tiss Organ Cult

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“…Phenolic compounds are ubiquitous secondary metabolites in plants, which are crucial in many aspects of plant life, especially during their interactions with the environment (Lattanzio, 2013). Some phenolics play key roles in plant defense responses to pathogen or insect attacks.…”

Section: Discussionmentioning

confidence: 99%

Management of Bacterial Spot of Pepper Caused by <i>Xanthomonas campestris</i> pv. vesicatoria

Hassan¹,

Zyton²

2017

BIO

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Isolation trials from pepper leaves showing bacterial spot collected from Giza, Kalubia and Behera governorates yielded 13,12,9,6 isolates of Bacillus subtilis, Pseudomonas spp., Xanthomonas campestris pv. vesicatoria and P. fluorescens, respectively. The isolated strains of X.c. pv. vesicatoria were yellow Gram negative of short rods and produced Xanthomonadins and the other identification criteria proved that these isolates are X.c. pv. vesicatoria. Pathogenicity test of these isolates on Balady pepper cv. indicated that all of them were pathogenic and isolate No.3 of Kalubia governorate resulted in the highest infection. P. putida was most efficient bioagent in inhibiting of the pathogenic bacterium followed by P. fluorescens, while B. subtilis was the lowest efficient one. The fungicide Efdal Bakirox was the most efficient one in inhibiting growth of the causal bacterium on the medium more than the fungicides Roxil and Tango. The fungicide Tango and Roxil failed to cause any inhibition to the causal bacterium at 100 ppm. Field experiments during 2014 and 2015 growing seasons revealed that spraying pepper plants with the tested bioagents and the fungicides four times resulted in significant reduction to the severity of the natural infection by the causal bacteriaum with significant increase to the produced fruit pods compared with the control. The tested fungicides were more efficient in this regard than the bioagents. Roxil was the most efficient treatment in reducing the severity of the disease and increasing the produced pod yield. Meanwhile, the bioagent B. subtilis was the lowest efficient treatment and the other treatments recorded intermediate figures. Total phenols and vitamin-c content as well as the activity of chitinase, peroxidase and polyphenoloxidase in pepper leaves infected by X.c.pv. vesicatoria were greatly lowered in the infected leaves compared with the uninfected leaves and the tested bioagents and fungicides resulted in considerable increase to these chemicals compared with the infected leaves.

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“…We have found that individual phenolic acids occur in lichens in a variety of conjugated forms (Table 2), which is typical for this class of compounds in plants and fungi (Heleno et al, 2015;Lattanzio, 2013). Conjugation enhances solubility and reduces cytotoxicity; however, it may alter reactivities of conjugated PCs versus parental compounds (Heleno et al, 2015).…”

Section: Lichens As a Source Of Soluble Phenolic Metabolites In Soilmentioning

confidence: 90%

Water‐soluble phenolic metabolites in lichens and their potential role in soil organic matter formation at the pre‐vascular stage

Заварзина

Nikolaeva

Демин

et al. 2019

European J Soil Science

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Soil organic matter (SOM) is the largest reservoir of organic carbon in the biosphere. However, little is known about the processes of its formation at the pre‐vascular stage. Lichens are among the pioneer colonizers on mineral substrates and are possible early land flora. This study is the first report on the identification and quantification of water‐soluble phenolic compounds (PCs), potential precursors of humic substances, in epigeyic lichens from two systematic groups. Results show (Folin–Denis assay) that cyanobiont‐containing lichens (order Peltigerales) possess three to five times more total soluble PCs than Lecanoralean lichens (Cladonia, Cetraria spp.) and mosses. Soluble PCs in lichens occur in the conjugated form. Alkali‐hydrolysable compounds (esters) predominate over acid‐hydrolysable compounds (glycosides). Phenolic complexes with N‐containing compounds or reducing sugars, or both, have been identified by thin layer chromatography (TLC). Benzoic acid derivatives were most common among PCs, detected in lichens by reversed‐phase high‐pressure liquid chromatography (RP‐HPLC). Phenolic acids occur in the order (μg 100 g−1): p‐hydroxybenzoic acid (327–1,007) > syringic acid (87–361) > salycilic acid (135–210) > vanillic acid (12–19) (Peltigeralean lichens); salicylic acid (53–102) > p‐hydroxybenzoic acid (45–54) > caffeic acid (29) > syringic acid (18) > vanillic acid (9–13) (Lecanoralean lichens). Protocatechuic, caffeic and p‐coumaric acids were rare; ferulic acid was not detected. Syringyl and vanillyl aldehydes and ketones occur in much larger amounts than acids. Methoxy‐substituted and ortho‐substituted phenols, detected in lichens, are known for their high reactivity in soils under lignified vegetation, suggesting their important roles in SOM formation under a cryptogam cover. Highlights Phenolic composition of SOM and humification processes at pre‐vascular stage are largely overlooked Soluble phenolic acids, aldehydes and ketones are quantified in lichens for the first time Lichens are depleted in phenylpropanoids and enriched in syringyl structures and monophenols Lichen‐derived phenolic compounds are potential precursors of humic substances under cryptogam cover

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Phenolic Compounds: Introduction

Cited by 241 publications

References 130 publications

LED lighting affects plant growth, morphogenesis and phytochemical contents of Myrtus communis L. in vitro

LED lighting affects plant growth, morphogenesis and phytochemical contents of Myrtus communis L. in vitro

Management of Bacterial Spot of Pepper Caused by <i>Xanthomonas campestris</i> pv. vesicatoria

Water‐soluble phenolic metabolites in lichens and their potential role in soil organic matter formation at the pre‐vascular stage

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Phenolic Compounds: Introduction

Cited by 241 publications

References 130 publications

LED lighting affects plant growth, morphogenesis and phytochemical contents of Myrtus communis L. in vitro

LED lighting affects plant growth, morphogenesis and phytochemical contents of Myrtus communis L. in vitro

Management of Bacterial Spot of Pepper Caused by &lt;i&gt;Xanthomonas campestris&lt;/i&gt; pv. vesicatoria

Water‐soluble phenolic metabolites in lichens and their potential role in soil organic matter formation at the pre‐vascular stage

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Management of Bacterial Spot of Pepper Caused by <i>Xanthomonas campestris</i> pv. vesicatoria