Polyphenols in Bryophytes

Asakawa, Yoshinori

doi:10.1002/9781118883303.ch2

Cited by 10 publications

(3 citation statements)

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“…Besides having structural roles these polymers may also contribute to physical barriers to pathogens (Zhao and Dixon, 2014). Although lignin is thought to be absent from non-vascular plants, cinnamic acid derivatives such as rosmarinic acid and (neo)lignans are common in bryophytes (Asakawa et al, 2013;Asakawa, 2017), and may be cell wall-localized (Wang et al, 2013). In Sphagnum moss, oxidative derivatives of sphagnum acid, ph yd r ox yac eto p he no ne , hy d ro x y b u t e n o l i d e , a n d phydroxybenzoic acid, as well as the phenolics p-coumaric acid and trans-cinnamic acid, were predominantly bound to the cell wall (Verhoeven and Liefveld, 1997).…”

Section: Pigmented Flavonoids and Tolerance To Abiotic Stressmentioning

confidence: 99%

“…The identification of different flavonoid groups across land plants has been conducted for many years, both to further understand the evolutionary significance of flavonoid distribution by chemotaxonomy and for the discovery of novel bioactives (Markham, 1988;Asakawa, 2017;Jiang et al, 2016;de Vries et al, 2017;Yonekura-Sakakibara et al, 2019). Flavones and/or flavonols are almost ubiquitous across land plants (Berim, 2016) but variations in the specific types of flavonols or flavones produced have occurred during evolution, for example resulting in the rarity of flavone O-glycosides in leafy liverworts (Markham, 1988) or of polymethoxylated flavones in gymnosperms (Berim, 2016).…”

Section: The Evolutionary Significance Of the Occurrence Of Differentmentioning

confidence: 99%

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The Evolution of Flavonoid Biosynthesis: A Bryophyte Perspective

et al. 2020

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The flavonoid pathway is one of the best characterized specialized metabolite pathways of plants. In angiosperms, the flavonoids have varied roles in assisting with tolerance to abiotic stress and are also key for signaling to pollinators and seed dispersal agents. The pathway is thought to be specific to land plants and to have arisen during the period of land colonization around 550-470 million years ago. In this review we consider current knowledge of the flavonoid pathway in the bryophytes, consisting of the liverworts, hornworts, and mosses. The pathway is less characterized for bryophytes than angiosperms, and the first genetic and molecular studies on bryophytes are finding both commonalities and significant differences in flavonoid biosynthesis and pathway regulation between angiosperms and bryophytes. This includes biosynthetic pathway branches specific to each plant group and the apparent complete absence of flavonoids from the hornworts.

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Section: Pigmented Flavonoids and Tolerance To Abiotic Stressmentioning

confidence: 99%

Section: The Evolutionary Significance Of the Occurrence Of Differentmentioning

confidence: 99%

The Evolution of Flavonoid Biosynthesis: A Bryophyte Perspective

et al. 2020

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“…Since 1972, more than 1000 species of bryophytes collected around the world were chemically analyzed with respect to their chemistry, pharmacology, and application as sources of cosmetics and as medicinal or agricultural agents. The biological activities of liverworts are due to the terpenoids and aromatic compounds that are present in the oil bodies in each species. − ,,, …”

Section: Introductionmentioning

confidence: 99%

Chemical Constituents of Bryophytes: Structures and Biological Activity

2017

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Comparatively little attention has been paid to the bryophytes for use in the human diet or medicine in spite of the presence of 23 000 species globally. Several hundred new compounds have been isolated from the liverworts (Marchantiophyta), and more than 40 new carbon skeletons of terpenoids and aromatic compounds were found. Most of the liverworts studied elaborate characteristic odiferous, pungent, and bitter-tasting compounds, of which many show antimicrobial, antifungal, antiviral, allergic contact dermatitis, cytotoxic, insecticidal, anti-HIV, plant growth regulatory, neurotrophic, NO production and superoxide anion radical release inhibitory, muscle relaxing, antiobesity, piscicidal, and nematocidal activities. The biological effects ascribed to the liverworts are mainly due to lipophilic sesqui- and diterpenoids, phenolic compounds, and polyketides, which are the principal constituents of their oil bodies. Some mosses and liverworts produce significant levels of vitamin B and tocopherols, as well as prostaglandin-like highly unsaturated fatty acids. The most characteristic chemical phenomenon of the liverworts is that most of the sesqui- and diterpenoids are enantiomers of those found in higher plants. In this review, the chemical constituents and potential medicinal uses of bryophytes are discussed.

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