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Development of arabinans and galactans during the maturation of hypocotyl cells of mung bean (Vigna radiata Wilczek)

✍ Scribed by Catherine Herve du Penhoat; Veronique Michon; Renee Goldberg

Publisher: Elsevier Science
Year: 1987
Tongue: English
Weight: 729 KB
Volume: 165
Category: Article
ISSN: 0008-6215
DOI: 10.1016/0008-6215(87)80075-7

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✦ Synopsis

Hypocotyl cell walls contain galactans and arabinans that are soluble in boiling water. During maturation, the Ara/Gal ratio remains unchanged but highmolecular-weight galactans are replaced by smaller polymers. On the basis of the 'H-n.m.r. 2D-COSY(8-6, 'H-'H) n.m.r., and t3C-n.m.r. spectra, a (1+5)-cY-Araf structure can be proposed for the arabinans in both young and mature cell walls. However, the galactan(s) changed from a probably highly branched to an unbranched (1+4)+Galp structure during maturation.

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