Table 2.
Content (% d. wt) of small molecular weight carbohydrates in cyanobacterial (C) and green algal (G) lichens
| Low molecular weight carbohydrates (% d. wt) |
|||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lichen species | Photobiont | Erythritol* | Ribitol† | Glucose‡ | Arabitol | Mannitol | Sorbitol | Fructose | Myo-inositol | Volemitol? | Sucrose | Trehalose | Total |
| Ps. cinnamomea | C | – | 0·08 | t | 0·01 | 3·87 | 0·55 | 0·04 | 0·01 | 0·05 | 0·05 | 0·48 | 5·18 |
| Ps. crocataF | C | – | 1·50 | t | 0·06 | 1·91 | 0·02 | 0·02 | 0·01 | 0·02 | 0·03 | 0·12 | 3·68 |
| Ps. dissimilis | C | – | 0·01 | 0·08 | 0·01 | 6·25 | 0·51 | 0·05 | 0·06 | 0·1 | 0·53 | 0·26 | 7·90 |
| Ps. lividofusca/cyan | C | – | 1·75 | 0·02 | 0·54 | 2·14 | 0·09 | 0·21 | 0·05 | 0·07 | 0·04 | 0·04 | 4·94 |
| Ps. rufovirescens/cyan | C | – | 2·68 | 0·02 | 0·16 | 5·06 | 0·59 | 0·01 | 0·04 | 0·12 | 0·05 | – | 8·72 |
| Sticta fuliginosa | C | – | 0·14 | 0·01 | 0·05 | 2·09 | 1·53 | t | 0·42 | 0·13 | 0·01 | 0·02 | 4·39 |
| Collema leucocarpum | C | – | – | 0·23 | t | 1·35 | – | 0·07 | t | – | 0·08 | 0·15 | 1·88 |
| Peltigera dolichoriza | C | 0·47 | 0·03 | 0·01 | 0·29 | 8·23 | – | 0·19 | 0·06 | 1·45 | 0·04 | 7·45 | 18·21 |
| S. latifronsF | G | – | 0·38 | – | 0·22 | 0·64 | – | 0·01 | 0·01 | 0·03 | 0·02 | 0·01 | 1·31 |
| Ps. lividofusca | G | – | 5·70 | t | 1·83 | 6·99 | – | 0·02 | 0·01 | 0·19 | 0·44 | 0·14 | 15·32 |
| Ps. rufovirescens | G | – | 2·26 | 0·02 | 0·88 | 2·00 | 0·01 | 0·05 | 0·02 | 0·04 | 0·04 | 0·01 | 5·32 |
Known mobile carbohydrates released by photobiont: * Hyalococcus; † Trebouxiophyceae; ‡ Nostoc sp;
F lichen frozen in field; –, none detected; t, trace only; ?, tentative identification by co-chromatography only.