Structural features of an acidic polysaccharide from the mucin of Drosera binata

Gowda, D. Channe; Reuter, Gerd; Schauer, Roland

doi:10.1016/0031-9422(82)85194-7

Cited by 25 publications

(23 citation statements)

References 15 publications

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“…The polysaccharide of D. capensis is composed of L-arabinose, D-xylose, D-galactose, D-mannose and D-glucuronic acid in a molar ratio of 3.6:1.0:4.9:8.4:8.2 (Gowda et al, 1983) and constitutes 4 % of D. capensis adhesive (Rost and Schauer, 1977). Drosera binata polysaccharide has a different ratio, 8:1:10:18:17 (Gowda et al, 1982). Recently, Bauer and Bazile demonstrated that the viscoelastic properties of N. rafflesiana fluid decrease significantly after pitcher opening (Bauer and Federle, 2009;Bazile et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Proteome analysis of digestive fluids inNepenthespitchers

Rottloff

Miguel²,

Biteau

et al. 2016

Ann Bot

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Section: Discussionmentioning

confidence: 99%

Proteome analysis of digestive fluids inNepenthespitchers

Rottloff

Miguel²,

Biteau

et al. 2016

Ann Bot

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“…This raises the question of whether the viscoelastic fluids in Nepenthes species have a common origin. Interestingly, the glue secreted by the leaves of Drosera , another carnivorous genus, is composed of acid polysaccharides (Gowda et al. , 1982) and these have been demonstrated to be viscoelastic (Erni et al.…”

Section: Discussionmentioning

confidence: 99%

Slippery or sticky? Functional diversity in the trapping strategy of Nepenthes carnivorous plants

et al. 2011

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Summary• The pitcher-shaped leaves of Nepenthes carnivorous plants have been considered as pitfall traps that essentially rely on slippery surfaces to capture insects. But a recent study of Nepenthes rafflesiana has shown that the viscoelasticity of the digestive fluid inside the pitchers plays a key role.• Here, we investigated whether Nepenthes species exhibit diverse trapping strategies. We measured the amount of slippery wax on the pitcher walls of 23 taxa and the viscoelasticity of their digestive liquid and compared their retention efficiency on ants and flies.• The amount of wax was shown to vary greatly between species. Most mountain species exhibited viscoelastic digestive fluids while water-like fluids were predominant in lowland species. Both characteristics contributed to insect trapping but wax was more efficient at trapping ants while viscoelasticity was key in trapping insects and was even more efficient than wax on flies. Trap waxiness and fluid viscoelasticity were inversely related, suggesting the possibility of an investment tradeoff for the plants.• Therefore Nepenthes pitcher plants do not solely employ slippery devices to trap insects but often employ a viscoelastic strategy. The entomofauna specific to the plant's habitat may exert selective pressures, favouring one trapping strategy at the expense of the other.

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“…Sporadic, earlier reports of this monosaccharide in plants could not be con®rmed by modern analysis. We have studied several plant sources, including the mucin from Drosera binata, but did not ®nd Sia, although we obtained for the ®rst time structural data from this biologically important acid polysaccharide [24]. The systematic analysis of Sia in the animal kingdom or under different physiological or pathological states will show the real distribution of Sia in the living systems and will help to better understand the roles of the various Sia species and to get more insight into their regulation Figure 1.…”

Section: Occurrence Isolation and Analysis Of Sialic Acidsmentioning

confidence: 99%

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Schauer

2000

Glycoconjugate Journal

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514

205

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Slalic acids are one of the most important molecules of life, since they occupy the terminal position on macromolecules and cell membranes and are involved in many biological and pathological phenomena. The structures of sialic acids, comprising a family of over 40 neuraminic acid derivatives, have been elucidated. However, many aspects of the regulation of their metabolism at the enzyme and gene levels, as well as of their functions remain mysterious. Sialic acids play a dual role, not only are they indispensable for the protection to and adaptation of life, but are also utilised by life-threatening infectious microorganisms. In this article the present state of knowledge in sialobiology, with an emphasis on my personal experience in this research area, is outlined including a discussion of necessary future work in this fascinating field of cell biology.

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Structural features of an acidic polysaccharide from the mucin of Drosera binata

Cited by 25 publications

References 15 publications

Proteome analysis of digestive fluids inNepenthespitchers

Proteome analysis of digestive fluids inNepenthespitchers

Slippery or sticky? Functional diversity in the trapping strategy of Nepenthes carnivorous plants

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