Changes in glycosidase activities during galactoglucomannan oligosaccharide inhibition of auxin induced growth

Bilisics, L.; Vojtaššák, J.; Capek, Peter; Kollárová, Karin; Lišková, Desana

doi:10.1016/j.phytochem.2004.06.002

Cited by 11 publications

(4 citation statements)

References 37 publications

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“…The relation of indirect dependency has been postulated between 2,4-D and GGMOs by Auxtová-Šamajová et al (1996). Our data show also that GGMOs may alter some glycosidase activities during elongation growth in different compartments of the cell (Bilisics et al 2004). However, besides elongation growth GGMOs are able to influence the development of zygotic spruce embryos, viability and regeneration of spruce protoplasts , and they seem to be effective factors in the induction of defense reactions in plant cells as well (Slováková et al 2000).…”

Section: Introductionsupporting

confidence: 71%

Further biological characteristics of galactoglucomannan oligosaccharides

Kollárová¹,

Lišková²,

Capek³

2006

Biol. plant.

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The biological activity of cell wall-derived galactoglucomannan oligosaccharides (GGMOs) was dependent on their chemical structure. Galactosyl side chains linked to the glucomanno-core influenced their inhibition of elongation growth of pea (Pisum sativum L. cv. Tyrkys) stem segments induced by 2,4-dichlorophenoxyacetic acid (2,4-D). Reduction of the number of galactosyl side chains in GGMOs caused stimulation of the endogenous growth. Modification on the glucomanno-reducing end did not affect significantly the activity of these oligosaccharides. GGMOs inhibited also the elongation induced by indole-3-acetic acid (IAA) and gibberellic acid (GA 3 ). In the presence of IAA the elongation growth was inhibited to 20 -35 % after 24 h of incubation depending on GGMOs concentrations (1 μM, 10 nM, 0.1 nM), similarly as in the presence of 2,4-D, which confirms the hypothesis of GGMOs antiauxin properties. The elongation induced by GA 3 was inhibited to 25 -60 %, however, the time course of inhibition was different compared with IAA and 2,4-D. The highest inhibition was determined already after 6 h of incubation with a significant decrease after this time. The results indicated a competition between GGMOs and growth regulators.Additional key words: biologically active oligosaccharides, 2,4-D, elongation growth, GA 3 , IAA, Pisum sativum.

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Section: Introductionsupporting

confidence: 71%

Further biological characteristics of galactoglucomannan oligosaccharides

Kollárová¹,

Lišková²,

Capek³

2006

Biol. plant.

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“…GGMOs-g, with reduced number of D-galactose units to about 50%, were prepared by treatment of GGMOs with purified α -galactosidase (EC 3.2.1.22) from coffee beans (Sigma Aldrich, St. Louis, MO, USA) as described previously [25]. Monosaccharide analysis of GGMOs-g by glucose revealed the presence of galactose (2.4%), glucose (21.6%), and mannose (72.0%) residues.…”

Section: Methodsmentioning

confidence: 99%

Growth and Anatomical Parameters of Adventitious Roots Formed on Mung Bean Hypocotyls Are Correlated with Galactoglucomannan Oligosaccharides Structure

Kollárová

Zelko

Henselová

et al. 2012

The Scientific World Journal

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The effect of galactoglucomannan oligosaccharides (GGMOs) compared with chemically modified oligosaccharides, GGMOs-g (with reduced number of D-galactose side chains) and GGMOs-r (with reduced reducing ends) on mung bean (Vigna radiata (L.) Wilczek) adventitious roots formation, elongation, and anatomical structure have been studied. All types of oligosaccharides influenced adventitious root formation in the same way: stimulation in the absence of exogenous auxin and inhibition in the presence of exogenous auxin. Both reactions are probably related with the presence/content of endogenous auxin in plant cuttings. However, the adventitious root length was inhibited by GGMOs both in the absence as well as in the presence of auxin (IBA or NAA), while GGMOs-g inhibition was significantly weaker compared with GGMOs. GGMOs-r were without significant difference on both processes, compared with GGMOs. GGMOs affected not only the adventitious root length but also their anatomy in dependence on the combination with certain type of auxin. The oligosaccharides influenced cortical cells division, which was reflected in the cortex area and in the root diameter. All processes followed were dependent on oligosaccharides chemical structure. The results suggest also that GGM-derived oligosaccharides may play an important role in adventitious roots elongation but not in their formation.

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“…Heteromannans are also proposed to act as regulators of growth and development (Auxtová et al, 1995;Bilisics et al, 2004;Benová-Kákosová et al, 2006). The heteromannan backbone is synthesized by cellulose synthase-like A (CSLA) glycan synthases (Liepman et al, 2005(Liepman et al, , 2007Suzuki et al, 2006).…”

Section: Heteromannans May Have Distinct Roles In Brassicaceae and Somentioning

confidence: 99%

Distinct Cell Wall Architectures in Seed Endosperms in Representatives of the Brassicaceae and Solanaceae

et al. 2012

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In some species, a crucial role has been demonstrated for the seed endosperm during germination. The endosperm has been shown to integrate environmental cues with hormonal networks that underpin dormancy and seed germination, a process that involves the action of cell wall remodeling enzymes (CWREs). Here, we examine the cell wall architectures of the endosperms of two related Brassicaceae, Arabidopsis (Arabidopsis thaliana) and the close relative Lepidium (Lepidium sativum), and that of the Solanaceous species, tobacco (Nicotiana tabacum). The Brassicaceae species have a similar cell wall architecture that is rich in pectic homogalacturonan, arabinan, and xyloglucan. Distinctive features of the tobacco endosperm that are absent in the Brassicaceae representatives are major tissue asymmetries in cell wall structural components that reflect the future site of radicle emergence and abundant heteromannan. Cell wall architecture of the micropylar endosperm of tobacco seeds has structural components similar to those seen in Arabidopsis and Lepidium endosperms. In situ and biomechanical analyses were used to study changes in endosperms during seed germination and suggest a role for mannan degradation in tobacco. In the case of the Brassicaceae representatives, the structurally homogeneous cell walls of the endosperm can be acted on by spatially regulated CWRE expression. Genetic manipulations of cell wall components present in the Arabidopsis seed endosperm demonstrate the impact of cell wall architectural changes on germination kinetics.

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Changes in glycosidase activities during galactoglucomannan oligosaccharide inhibition of auxin induced growth

Cited by 11 publications

References 37 publications

Further biological characteristics of galactoglucomannan oligosaccharides

Further biological characteristics of galactoglucomannan oligosaccharides

Growth and Anatomical Parameters of Adventitious Roots Formed on Mung Bean Hypocotyls Are Correlated with Galactoglucomannan Oligosaccharides Structure

Distinct Cell Wall Architectures in Seed Endosperms in Representatives of the Brassicaceae and Solanaceae

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