Table 2.
Cell wall composition (%) of seven representative tissues in rice
| Tissues | Cellulose | Hemicelluloses | Pectins | |||||
|---|---|---|---|---|---|---|---|---|
| Hexose | Pentose | Total | Hexose | Pentose | UroA | Total | ||
| Calli | 23.8 (4.2)* |
35.1 | 64.9 | 65.4 (11.5) |
23.0 | 23.9 | 53.0 | 10.8 (1.9) |
| Seedling leaves | 48.8 (15.7) |
31.1 | 68.9 | 44.8 (14.4) |
33.1 | 26.5 | 40.4 | 6.4 (2.1) |
| Seedling roots | 54.0 (20.5) |
35.1 | 64.9 | 42.5 (16.1) |
45.3 | 30.9 | 23.8 | 3.5 (1.3) |
| Young stem | 33.8 (11.1) |
64.0 | 36.0 | 63.5 (20.9) |
34.5 | 27.5 | 38.0 | 2.7 (0.9) |
| Old stem | 38.3 (20.6) |
67.3 | 32.7 | 60.1 (32.3) |
30.3 | 21.1 | 48.5 | 1.7 (0.9) |
| Hull | 56.4 (26.6) |
22.7 | 77.3 | 41.1 (19.4) |
36.1 | 30.1 | 33.8 | 2.5 (1.2) |
| Stamen | 29.7 (2.3) |
24.9 | 75.1 | 29.0 (2.3) |
34.3 | 30.0 | 35.7 | 41.3 (3.3) |
* % of wall polysaccharide based on the tissue dry weight; the absolute values are bracketed.