Table II. Monosaccharide composition of β-GlcY precipitate obtained from B. napus and pea root caps including border cells and border-like cells.

The β-GlcY precipitate represents the soluble fraction of the cell surface that is either arabinogalactan proteins or covalently/strongly associated with arabinogalactan proteins. The values indicate averages ± se of three independent experiments.

Sugar	B. napus	Pea
	mol %
Gal	37 ± 3.9	27 ± 3
Ara	23 ± 2.6	21 ± 2.3
GalUA	16 ± 1.9	18 ± 1.9
Xyl	15 ± 2	15 ± 2
Rha	2 ± 0.4	7.5 ± 1.2
Man	4 ± 0.5	2 ± 0.2
GlcA	1 ± 0.3	4 ± 0.5
Glc	1 ± 0.2	3.5 ± 0.7
Fuc	1 ± 0.1	2 ± 0.3