Flavonoids

Seigler, David S.

doi:10.1007/978-1-4615-4913-0_11

Cited by 8 publications

(3 citation statements)

References 127 publications

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“…The above results indicate that pumpkin rootstock might be useful against biotic and abiotic stress, as evident from the above results. Secondary metabolites such as flavonoids, flavonols, phenolic acids, polyphenols, lignin’s, and tannins have been implicated in plant defense mechanisms against the pathogen, various stresses, UV radiation, fruit quality and graft union success [ 89 , 90 , 91 , 92 , 93 , 94 , 95 , 96 , 97 ]. Grafting show non-significant differences in phenylpropanoid and flavonoids contents, with only few up-regulated while most of them were recorded lower in grafted plants.…”

Section: Discussionmentioning

confidence: 99%

High-Throughput LC-ESI-MS/MS Metabolomics Approach Reveals Regulation of Metabolites Related to Diverse Functions in Mature Fruit of Grafted Watermelon

Ali

Zhao

et al. 2021

Biomolecules

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Grafting has been reported as a factor regulating the metabolome of a plant. Therefore, a comprehensive metabolic profile and comparative analysis of metabolites were conducted from fully mature fruit of pumpkin-grafted watermelon (PGW) and a self-rooted watermelon (SRW). Widely targeted LC-ESI-MS/MS metabolomics approach facilitated the simultaneous identification and quantification of 339 metabolites across PGW and SRW. Regardless of grafting, delta-aminolevulinic acid hydrochloride, sucrose, mannose-6-phosphate (carbohydrates), homocystine, 2-phenylglycine, s-adenosyl-L-homocysteine (amino acids and derivatives), malic, azelaic, H-butanoic acid ethyl ester-hexoside isomer 1, (organic acids), MAG (18:3) isomer1, LysoPC 16:0, LysoPC 18:2 2n isomer (lipids) p-coumaric acid, piperidine, and salicylic acid-o-glycoside (secondary metabolites) were among the dominant metabolite. Dulcitol, mono-, and disaccharide sugars were higher in PGW, while polysaccharides showed complex behavior. In PGW, most aromatic and nitrogen-rich amino acids accumulated greater than 1.5- and 1-fold, respectively. Intermediates of the tricarboxylic acid cycle (TCA), stress-related metabolites, vitamin B5, and several flavonoids were significantly more abundant in PGW. Most lipids were also significantly higher in grafted watermelon. This is the first report providing a comprehensive picture of watermelon metabolic profile and changes induced by grafting. Hence, the untargeted high-throughput LC-ESI-MS/MS metabolomics approach could be suitable to provide significant differences in metabolite contents between grafted and ungrafted plants.

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Section: Discussionmentioning

confidence: 99%

High-Throughput LC-ESI-MS/MS Metabolomics Approach Reveals Regulation of Metabolites Related to Diverse Functions in Mature Fruit of Grafted Watermelon

Ali

Zhao

et al. 2021

Biomolecules

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“…Thus, given the substantial reactivity of several low-volatility terpenes and terpenoids toward O 3 and hydroxyl radicals , and the light-absorption properties of some secondary metabolites, , multiphase oxidation involving semi- and nonvolatile chemicals from trichomes may be an overlooked source of low-molecular-weight compounds (e.g., formaldehyde or formic acid) and a sink of reactive trace gases in specific plant species.…”

Section: Chemicals From the Plant And Its Biomementioning

confidence: 99%

The Chemical Landscape of Leaf Surfaces and Its Interaction with the Atmosphere

Ossola,

Farmer

2024

Chem. Rev.

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Atmospheric chemists have historically treated leaves as inert surfaces that merely emit volatile hydrocarbons. However, a growing body of evidence suggests that leaves are ubiquitous substrates for multiphase reactions−implying the presence of chemicals on their surfaces. This Review provides an overview of the chemistry and reactivity of the leaf surface's "chemical landscape", the dynamic ensemble of compounds covering plant leaves. We classified chemicals as endogenous (originating from the plant and its biome) or exogenous (delivered from the environment), highlighting the biological, geographical, and meteorological factors driving their contributions. Based on available data, we predicted ≫2 μg cm −2 of organics on a typical leaf, leading to a global estimate of ≫3 Tg for multiphase reactions. Our work also highlighted three major knowledge gaps: (i) the overlooked role of ambient water in enabling the leaching of endogenous substances and mediating aqueous chemistry; (ii) the importance of phyllosphere biofilms in shaping leaf surface chemistry and reactivity; (iii) the paucity of studies on the multiphase reactivity of atmospheric oxidants with leaf-adsorbed chemicals. Although biased toward available data, we hope this Review will spark a renewed interest in the leaf surface's chemical landscape and encourage multidisciplinary collaborations to move the field forward. CONTENTS

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“…Flavonoids are one of the most abundant of biological pigment classes, secondary metabolites that perform a wide variety of functions in plant and fungal organisms (Harborne and Baxter, 1999;Deveoglu and Karadag, 2019). The exact number of discovered and investigated flavonoids is currently unknown: various literature sources mention 500 (Havsteen, 1983) to 4,000 (Seigler, 1998;Harborne and Baxter, 1999) flavonoids of different structures and functions. This number is continuously growing so that some sources have recently reported more than 6,000 flavonoids (Stobiecki and Kachlicki, 2006).…”

Section: Introductionmentioning

confidence: 99%

Progress and Achievements in Glycosylation of Flavonoids

et al. 2021

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In recent years, the chemistry of flavonoid glycosylation has undergone significant developments. This mini-review is devoted to summarizing existing strategies and methods for glycosylation of natural and synthetic flavonoids. Herein we overviewed the reaction conditions of flavonoid glycosylation depending on the position of hydroxyl groups in a parent molecule, the degree of it conjugation with the π-system, the presence of steric factors, the formation of intramolecular hydrogen bonds, etc. Especial attention was given to the choice of the glycosyl donor moiety, which has a significant effect on the yield of the final glycosidated products. Finally, a general strategy for regioselective glycosylation of flavonoids containing several hydroxyl groups is outlined.

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Flavonoids

Cited by 8 publications

References 127 publications

High-Throughput LC-ESI-MS/MS Metabolomics Approach Reveals Regulation of Metabolites Related to Diverse Functions in Mature Fruit of Grafted Watermelon

High-Throughput LC-ESI-MS/MS Metabolomics Approach Reveals Regulation of Metabolites Related to Diverse Functions in Mature Fruit of Grafted Watermelon

The Chemical Landscape of Leaf Surfaces and Its Interaction with the Atmosphere

Progress and Achievements in Glycosylation of Flavonoids

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