Table 5.

Chemical composition of total cell wall sugars in senesced mature dried stems from wild-type and pAtIRX5:AdoMetase (AdoMetase) lines.

Sugar	Mean ± SE (mg g−1 dry weight)
	Wild type	AdoMetase-1	AdoMetase-2	AdoMetase-3
Fucose	3.1 ± 0.1	3.1 ± 0.0	3.1 ± 0.0	3.1 ± 0.0
Rhamnose	7.2 ± 0.2	6.6 ± 0.1	6.5 ± 0.2	6.4 ± 0.2
Arabinose	7.8 ± 0.1	8.1 ± 0.3	7.6 ± 0.3	7.9 ± 0.2
Galactose	13.2 ± 0.4	13.5 ± 0.4	13.3 ± 0.4	13.7 ± 0.3
Mannose	22.7 ± 1.8	35.3 ± 3.2*	30.8 ± 3.2*	29.8 ± 0.9*
Galacturonic acid	61.9 ± 8.9	51.9 ± 6.9	55.6 ± 5.3	65.8 ± 1.1
Xylose	185.1 ± 12.7	220.8 ± 9.9	192.9 ± 10.0	184.2 ± 9.4
Glucose	376.4 ± 9.2	433.3 ± 13.4*	422.2 ± 15.7*	413.7 ± 13.7*
Glucose (TFA)	10.4 ± 0.3	12.9 ± 0.2*	14.3 ± 0.3*	14.2 ± 0.3*
Glucuronic acid	2.2 ± 0.1	5.2 ± 0.8*	5.2 ± 0.8*	5.6 ± 0.2*
4-O-Methylglucuronic acid	6.8 ± 0.8	1.9 ± 0.3*	1.9 ± 0.1*	1.9 ± 0.2*

“Glucose (TFA)” is the amount of glucose released after trifluoroacetic acid hydrolysis of cell wall residues. Values are means ± SE from three biological replicates (n = 3). Asterisks indicate significant differences from the wild type using the unpaired Student’s t-test (*P < 0.05).