Production of acidic xylo-oligosaccharides by a family 10 endoxylanase from Thermoascus aurantiacus and use as plant growth regulators

• Published in: Biotechnology letters Vol. 24; no. 17; pp. 1413 - 1416
• Main Authors: KATAPODIS, P, KAVARNOU, A, KINTZIOS, S, PISTOLA, E, KEKOS, D, MACRIS, B. J, CHRISTAKOPOULOS, P
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer 01-09-2002; Springer Nature B.V
• Subjects: Acids; Biological and medical sciences; Biotechnology; Embryonic growth stage; Eukaryotic cell cultures; Fundamental and applied biological sciences. Psychology; Growth regulators; In vitro embryo culture; Methods. Procedures. Technologies; Plant cells and fungal cells; Plant growth; Malvaceae; Cell proliferation; Embryonic development; Enzyme; Oligosaccharide; Thermoascus; Xylan; Regulator; Fungi; Dicotyledones; Glycosidases; Angiospermae; Hydrolases; Ascomycetes; Spermatophyta; Gossypium hirsutum; Xylan endo-1,3-β-xylosidase; O-Glycosidases; Thallophyta
• ISSN: 0141-5492; 1573-6776; 1573-6776
• DOI: 10.1023/A:1019898414801

Neutral and acidic oligosaccharides were obtained from birchwood xylan by treatment with an endoxylanase, family 10 class, from Thermoascus aurantiacus. The main acidic xylooligosaccharide (aldotetrauronic acid) was separated from the hydrolysate by anion-exchange and size-exclusion chromatography and the primary structure was determined by ^sup 13^C NMR spectroscopy. The aldotetrauronic yield was 15% (w/w) of the total solubilised sugars. The addition of purified aldoterauronic acid at 1.6-16 mg l^sup -1^ growth medium, induced callus and somatic embryogenesis in culture explants of common mallow (Malva silvestris L.) and cotton (Gosssypium hirsutum).[PUBLICATION ABSTRACT]