Table II. CW composition.
CW analyses of the stems from wild-type and 3.5-month-old hpCAD poplars: (A) CW content (% CW) and composition and (B) distribution of the main CW neutral sugars. Boldface or underlined values indicate significantly increased or decreased values, respectively, as compared with those of the wild type (Dunnett’s adjusted Student’s t test, P < 0.05).
| A) CW composition (in mg/g CW)a | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Line | % CW | KL | ASL | Cellulose | Hemicellulose | ||||||
| Wild type |
87.3 ± 0.8 |
194.7 ± 7.9 |
16.8 ± 0.3 |
482 ± 24 |
268 ± 12 |
||||||
|
hpCAD4 |
87.6 ± 0.0 |
175.0 ± 3.3 |
14.5 ± 0.1 |
495 ± 16 |
279 ± 17 |
||||||
|
hpCAD19 |
87.8 ± 0.7 |
183.6 ± 1.2 |
14.5 ± 0.5 |
492 ± 15 |
290 ± 10 |
||||||
|
hpCAD24 |
88.6 ± 0.5 |
177.5 ± 3.8 |
14.2 ± 0.1 |
487 ± 11 |
278 ± 16 |
||||||
| B) Relative distribution of main neutral sugars from amorphous polysaccharides (% by weight)b | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Line |
Rha |
Ara |
Xyl |
Man |
Gal |
Glc |
|||||
| Wild type |
2.1 |
1.6 |
77.0 |
3.9 |
3.0 |
12.5 |
|||||
|
hpCAD4 |
2.0 |
1.6 |
79.2 |
3.1 |
3.2 |
11.0 |
|||||
|
hpCAD19 |
2.1 |
1.5 |
79.7 |
3.4 |
2.9 |
10.4 |
|||||
| hpCAD24 | 2.2 | 1.6 | 79.5 | 3.4 | 3.0 | 10.4 | |||||
a
The data represent means ± sd from individually analyzed plants (n = 5).
b
The sd between biological replicate analyses is in the 5% to 10% range.