Arabinogalactan-proteins in spore-producing land plants

Classen, Birgit; Baumann, Alexander; Utermoehlen, Jon

doi:10.1016/j.carbpol.2019.01.077

Cited by 27 publications

(20 citation statements)

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“…In contrast to broad knowledge on AGPs in seed plants, insight in occurrence and structure of AGPs in spore producing land plants (bryophytes, lycophytes, and monilophytes) is still very limited [20]. A plant transcriptome project revealed presence of sequences of GPI-anchored AGPs in liverworts, mosses, hornworts, lycophytes, and monilophytes [44], and a bioinformatic search for fasciclin-like arabinogalactan-protein backbones identified 14 such genes in Marchantia polymorpha [45].…”

Section: Resultsmentioning

confidence: 99%

“…A typical feature of AGPs is their ability to precipitate with Yariv phenylglycosides, e.g., the β-glucosyl Yariv reagent. Structural investigations on AGPs from spore land plants are limited, but they have been found in some species of monilophytes, lycophytes, and bryophytes [20]. One typical feature of moss and fern AGPs, the occurrence of the unusual monosaccharide acofriose (3- O -Me-Rha) has been lost during evolution and is absent in angiosperm AGPs.…”

Section: Introductionmentioning

confidence: 99%

“…With regard to bryophytes, only AGPs from some moss species have been isolated and analytically characterized. Although AGPs have been detected in one species of hornworts [21] and different species of liverworts [20] by Yariv’s reagent or monoclonal antibodies directed against glycan motifs present in arabinogalactans, no AGP has been isolated and analyzed from a horn- or a liverwort up to now. Therefore we characterized the general composition of the cell wall of the early land plant Marchantia polymorpha with special focus on AGPs.…”

Section: Introductionmentioning

confidence: 99%

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Arabinogalactan-Proteins from the Liverwort Marchantia polymorpha L., a Member of a Basal Land Plant Lineage, Are Structurally Different to Those of Angiosperms

Happ

Classen

2019

Plants

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The thalloid liverwort Marchantia polymorpha as a member of a basal land plant lineage has to cope with the challenge of terrestrial life. Obviously, the plant cell wall has been strongly involved in the outstanding evolutionary process of water-to-land-transition. AGPs are signaling glycoproteins of the cell wall, which seem to be ubiquitous in seed plants and might play a role in adaption to abiotic and biotic stress situations. Therefore, we investigated the cell wall composition of Marchantia polymorpha with special focus on structural characterization of arabinogalactan-proteins. The Marchantia AGP shows typical features known from seed plant AGPs like precipitation with β-glucosyl-Yariv’s reagent, a protein moiety with hydroxyproline and a carbohydrate part with 1,3,6-linked galactose and terminal arabinose residues. On the other hand, striking differences to AGPs of angiosperms are the occurrence of terminal 3-O-methyl-rhamnose and a highly branched galactan lacking appreciable amounts of 1,6-linked galactose. Binding of different AGP-antibodies (JIM13, KM1, LM2, LM6, LM14, LM26, and MAC207) to Marchantia AGP was investigated and confirmed structural differences between liverwort and angiosperm AGP, possibly due to deviating functions of these signaling molecules in the different taxonomic groups.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Arabinogalactan-Proteins from the Liverwort Marchantia polymorpha L., a Member of a Basal Land Plant Lineage, Are Structurally Different to Those of Angiosperms

Happ

Classen

2019

Plants

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“…The highly glycosylated arabinogalactan-proteins (AGPs) are interesting due to their involvement in both wall architecture and cellular regulatory processes (Ellis et al, 2010;Ma et al, 2018). AGPs are ubiquitous in seed land plants (Ma et al, 2018) and have also been found in ferns, lycophytes and mosses (Classen et al, 2019). They are structurally characterized by large polysaccharide moieties comprised of arabinogalactans (AGs, normally >90% of the molecule) which are covalently linked via hydroxyproline (Hyp) to relatively small protein/peptide backbones (normally around 1-10% of the molecule).…”

Section: Introductionmentioning

confidence: 99%

The Cell Wall of Seagrasses: Fascinating, Peculiar and a Blank Canvas for Future Research

Pfeifer

Classen

2020

Front. Plant Sci.

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Seagrasses are a polyphyletic group of angiosperm plants, which evolved from early monocotyledonous land plants and returned to the marine environment around 140 million years ago. Today, seagrasses comprise the five families Zosteraceae, Hydrocharitaceae, Posidoniaceae, Cymodoceaceae, and Ruppiaceae and form important coastal ecosystems worldwide. Despite of this ecological importance, the existing literature on adaption of these angiosperms to the marine environment and especially their cell wall composition is limited up to now. A unique feature described for some seagrasses is the occurrence of polyanionic, low-methylated pectins mainly composed of galacturonic acid and apiose (apiogalacturonans). Furthermore, sulfated galactans have been detected in some species. Recently, arabinogalactan-proteins (AGPs), highly glycosylated proteins of the cell wall of land plants, have been isolated for the first time from a seagrass of the baltic sea. Obviously, seagrass cell walls are characterized by new combinations of structural polysaccharide and glycoprotein elements known from macroalgae and angiosperm land plants. In this review, current knowledge on cell walls of seagrasses is summarized and suggestions for future investigations are given.

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“…2011, Classen et al. 2019). Recently, they have also been detected in a marine angiosperm (Pfeifer et al.…”

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confidence: 99%

Arabinogalactan‐like Glycoproteins from Ulva lactuca (Chlorophyta) Show Unique Features Compared to Land Plants AGPs

Přerovská

Henke²,

Bleha³

et al. 2021

Journal of Phycology

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Arabinogalactan proteins (AGPs) encompass a diverse group of plant cell wall proteoglycans, which play an essential role in plant development, signaling, plant‐microbe interactions, and many others. Although they are widely distributed throughout the plant kingdom and extensively studied, they remain largely unexplored in the lower plants, especially in seaweeds. Ulva species have high economic potential since various applications were previously described including bioremediation, biofuel production, and as a source of bioactive compounds. This article presents the first experimental confirmation of AGP‐like glycoproteins in Ulva species and provides a simple extraction protocol of Ulva lactuca AGP‐like glycoproteins, their partial characterization and unique comparison to scarcely described Solanum lycopersicum AGPs. The reactivity with primary anti‐AGP antibodies as well as Yariv reagent showed a great variety between Ulva lactuca and Solanum lycopersicum AGP‐like glycoproteins. While the amino acid analysis of the AGP‐like glycoproteins purified by the β‐d‐glucosyl Yariv reagent showed a similarity between algal and land plant AGP‐like glycoproteins, neutral saccharide analysis revealed unique glycosylation of the Ulva lactuca AGP‐like glycoproteins. Surprisingly, arabinose and galactose were not the most prevalent monosaccharides and the most outstanding was the presence of 3‐O‐methyl‐hexose, which has never been described in the AGPs. The exceptional structure of the Ulva lactuca AGP‐like glycoproteins implies a specialized adaptation to the marine environment and might bring new insight into the evolution of the plant cell wall.

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Arabinogalactan-proteins in spore-producing land plants

Cited by 27 publications

References 83 publications

Arabinogalactan-Proteins from the Liverwort Marchantia polymorpha L., a Member of a Basal Land Plant Lineage, Are Structurally Different to Those of Angiosperms

Arabinogalactan-Proteins from the Liverwort Marchantia polymorpha L., a Member of a Basal Land Plant Lineage, Are Structurally Different to Those of Angiosperms

The Cell Wall of Seagrasses: Fascinating, Peculiar and a Blank Canvas for Future Research

Arabinogalactan‐like Glycoproteins from Ulva lactuca (Chlorophyta) Show Unique Features Compared to Land Plants AGPs

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