Comparative analysis of cuticular waxes of the gametophyte and sporophyte of three species of Polytrichaceae

Matos, Tamara Machado; Peralta, Denílson Fernandes; Santos, Déborah Yara Alves Cursino dos

doi:10.1639/0007-2745-124.4.590

Cited by 4 publications

(4 citation statements)

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“…Differences in the chemical profile of waxes between life cycle stages have also been described in bryophytes (Busta et al, 2016;Matos et al, 2021b), as observed in P. laevis (Figures 3B, C). Cholesterol and 16-kaurene were only detected in the sporophytes, corroborating the idea of Busta et al (2016) that the expression of wax component biosynthesis pathways is defined differently in each stage of the bryophyte life cycle.…”

Section: Discussionsupporting

confidence: 67%

“…Despite recent efforts to demonstrate the properties of cuticles on the surface of both the gametophyte and sporophyte phases of bryophytes, most studies focus on Setaphyta (Proctor, 1979;Haas, 1982;Clayton-Greene et al, 1985;Neinhuis and Jetter, 1995;Koch et al, 2009;Xu et al, 2009;Budke et al, 2011;Budke et al, 2012;Buda et al, 2013;Busta et al, 2016;Matos et al, 2021a;Matos et al, 2021b) but not on hornworts.…”

Section: Introductionmentioning

confidence: 99%

“…Recent studies found quantitative and qualitative differences in waxes of the two life cycle stages of Funaria hygrometrica Hedw. (Funariaceae) (Busta et al, 2016) and in three Brazilian species of Polythricaceae (Matos et al, 2021b). Regarding the morphology of epicuticular waxes, amorphous to crystalloid variations have been observed in both the gametophyte and sporophyte of moss and liverwort species (Proctor, 1979;Clayton-Greene et al, 1985;Neinhuis and Jetter, 1995;Koch et al, 2009;Heinrichs and Reiner-Drehwald, 2012;Busta et al, 2016;Matos et al, 2021a;Matos et al, 2021b).…”

Section: Introductionmentioning

confidence: 99%

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Cuticle structure and chemical composition of waxes in Phaeoceros laevis (L.) Prosk (Notothyladaceae, Anthocerotophyta)

Matos

Cruz²,

Peralta³

et al. 2022

Front. Plant Sci.

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The development of a hydrophobic cuticle covering the epidermis was a crucial evolutionary novelty ensuring the establishment of land plants. However, there is little information about its structure and chemical composition, as well as its functional implications in avascular lineages such as Anthocerotophyta. The main goal of the present study was to compare the gametophyte and sporophyte cuticles of Phaeoceros laevis. Semithin sections were analyzed through light microscopy (LM), cuticle structure was evaluated by transmission electron microscopy (TEM) and epicuticular wax morphology was analyzed by scanning electron microscopy (SEM). Total waxes were analyzed by CG/MS, and the components were identified based on the mass spectra. A thin lipophilic layer was detected on the sporophyte surface, structured as a stratified cuticular layer, similar to the well-known structure described for vascular plants. On the other hand, the gametophyte cuticle was observed only with TEM as a thin osmiophilic layer. SEM analyses showed a film-type wax on the surface of both life phases. The wax layer was eight-fold thicker on the sporophyte (0.8 µg cm-2) than on gametophyte (0.1 µg cm-2). Possible mechanical and/or drought protection are discussed. Fatty acids, primary alcohols, and steroids were identified in both life phases, while the kauren-16-ene diterpene (3%) was detected only on the sporophyte. Although no alkanes were detected in P. laevis, our findings unveil great similarity of the sporophyte cuticle of this hornwort species with the general data described for vascular plants, reinforcing the conservative condition of this character and supporting the previous idea that the biosynthetic machinery involved in the synthesis of wax compounds is conserved since the ancestor of land plants.

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Section: Discussionsupporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cuticle structure and chemical composition of waxes in Phaeoceros laevis (L.) Prosk (Notothyladaceae, Anthocerotophyta)

Matos

Cruz²,

Peralta³

et al. 2022

Front. Plant Sci.

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“…As expected, some classes of compounds are widely distributed in all groups of mosses, such as fatty acids and their derivatives, alkanes, fatty alcohols, and aldehydes, compounds present as membrane constituents and cuticle layers (Matos et al 2021a,b), but also phenolic compounds, terpenoids, and steroids. However, alkaloids were only detected in a limited number of groups, such as Bryales, Aulacomniales, and Hypnales orders ( Fig.…”

Section: Resultssupporting

confidence: 59%

A chemistry overview of the beautiful miniature forest known as mosses

2023

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The bryophytes are the second largest group of land plants and are represented by three lineages: Marchantyophyta (liverworts), Anthocerotophyta (hornworts), and Bryophyta (mosses). They occupy a wide variety of habitats, from deserts to Antarctica, and exercise great ecological importance. These facts and their wide use in traditional medicine raise the question of what is known about moss chemistry. This paper gathered studies from the last 52 years about the compounds identified in mosses, aiming to address the following questions: Are mosses chemically under-studied? How many families, genera, and species of mosses have been chemically studied? Which continent and countries have been responsible for the majority of these studies? A literature search was performed in major scientific databases, using a combination of keywords. A total of 199 papers were compiled, of which 45% were published during the last decade. Only a small percentage of moss species has been studied, mostly from Europe and Asia. Dicranales and Hypnales are the most studied orders. In general, fatty acids and flavonoids are the most commonly reported classes of compounds. Biflavonoids and triflavonoids are detected mainly in derived clades of mosses, while coumarins are most reported for basal groups. Akthough only a small percentage of moss species has been chemically studied, most of these studies were published in the last decade—there has been a 135% increase in the number of reported compounds in the last 13 years. The emergence of new equipment, which can produce high-resolution spectra with small amounts of sample, combined with bioinformatics tools, has undoubtedly contributed to the increase of chemical investigation of mosses. Also, advances in the identification and phylogenetics of moss groups are contributing to a better understanding of them generally, which should lead also to increased study of moss chemistry.

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Mythbusters: Unravelling the pollutant uptake processes in mosses for air quality biomonitoring

Varela

Boquete

Fernández

et al. 2023

Ecological Indicators

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Comparative analysis of cuticular waxes of the gametophyte and sporophyte of three species of Polytrichaceae

Cited by 4 publications

References 27 publications

Cuticle structure and chemical composition of waxes in Phaeoceros laevis (L.) Prosk (Notothyladaceae, Anthocerotophyta)

Cuticle structure and chemical composition of waxes in Phaeoceros laevis (L.) Prosk (Notothyladaceae, Anthocerotophyta)

A chemistry overview of the beautiful miniature forest known as mosses

Mythbusters: Unravelling the pollutant uptake processes in mosses for air quality biomonitoring

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