Table 4.
Comparison of identified significantly different (P < 0·05) metabolites in the leaves and roots of Cashel-P under P-sufficient and P-deficient conditions
| Average response ratio of Cashel-P under sufficient P supply | Average response ratio of Cashel-P under limited P supply | Low/high | P | Log(ratio) | |
|---|---|---|---|---|---|
| Leaf | |||||
| γ-Aminobutyric acid | 3·41 × 10−4 | 6·86 × 10−4 | 2·01 | 0·006 | 0·30 |
| Unknown | 3·56 × 10−5 | 5·65 × 10−5 | 1·59 | 0·029 | 0·20 |
| Galactose/glycerol conjugate | 8·19 × 10−5 | 1·25 × 10−4 | 1·53 | 0·042 | 0·18 |
| Threonic acid | 8·27 × 10−4 | 1·21 × 10−3 | 1·46 | 0·034 | 0·16 |
| Unknown | 2·60 × 10−1 | 3·62 × 10−1 | 1·4 | <0·001 | 0·14 |
| Phytol B | 2·12 × 10−2 | 2·85 × 10−2 | 1·34 | 0·002 | 0·13 |
| Phytol A | 1·27 × 10−2 | 1·66 × 10−2 | 1·31 | <0·001 | 0·12 |
| Sucrose | 4·01 × 10−1 | 5·04 × 10−1 | 1·26 | 0·038 | 0·10 |
| Phytol C | 6·33 × 10−3 | 7·88 × 10−3 | 1·25 | 0·025 | 0·10 |
| n-Hexadecenoic acid | 4·43 × 10−2 | 5·54 × 10−2 | 1·25 | 0·014 | 0·10 |
| Phytil methyl ether | 1·49 × 10−1 | 1·79 × 10−1 | 1·2 | 0·004 | 0·08 |
| Homoserine | 2·16 × 10−4 | 1·17 × 10−4 | 0·54 | 0·047 | –0·27 |
| 2-Piperidinecarboxylic acid | 3·95 × 10−5 | 2·03 × 10−5 | 0·51 | 0·048 | –0·29 |
| Unknown | 7·45 × 10−5 | 3·18 × 10−5 | 0·43 | 0·010 | –0·37 |
| 5-Oxoproline | 5·29 × 10−2 | 2·27 × 10−2 | 0·43 | 0·049 | –0·37 |
| Histidine | 7·89 × 10−6 | 2·04 × 10−6 | 0·26 | 0·024 | –0·59 |
| Spermidine | 5·38 × 10−6 | 1·18 × 10−6 | 0·22 | 0·048 | –0·66 |
| Glutamine* | 2·66 × 10−3 | 5·3 × 10−4 | 0·20 | 0·026 | –0·70 |
| Phosphate | 7·64 × 10−3 | 1·17 × 10−3 | 0·15 | 0·002 | –0·82 |
| Asparagine* | 1·11 × 10−3 | 1·5 × 10−4 | 0·14 | 0·009 | –0·87 |
| Unknown | 3·48 × 10−4 | 3·10 × 10−5 | 0·09 | 0·046 | –1·05 |
| Root | |||||
| Unknown | 2·40 × 10−4 | 5·71 × 10−4 | 2·38 | 0·045 | 0·38 |
| Unknown | 1·08 × 10−4 | 2·28 × 10−4 | 2·11 | 0·019 | 0·32 |
| Unknown | 3·69 × 10−4 | 7·56 × 10−4 | 2·05 | 0·046 | 0·31 |
| Methionine | 3·62 × 10−5 | 7·12 × 10−5 | 1·97 | 0·027 | 0·29 |
| Unknown | 5·11 × 10−5 | 9·36 × 10−5 | 1·83 | 0·046 | 0·26 |
| Sucrose | 5·50 × 10−2 | 9·70 × 10−2 | 1·76 | 0·022 | 0·25 |
| Aspartic acid | 5·14 × 10−3 | 8·28 × 10−3 | 1·61 | 0·002 | 0·21 |
| Glutamic acid | 6·61 × 10−3 | 9·84 × 10−3 | 1·49 | 0·034 | 0·17 |
| n-Tetracosanoic | 1·35 × 10−2 | 9·20 × 10−3 | 0·68 | 0·043 | –0·17 |
| Unknown | 1·21 × 10−4 | 7·60 × 10−5 | 0·63 | 0·028 | –0·20 |
| Octadecenoic acid | 4·61 × 10−3 | 2·53 × 10−3 | 0·55 | 0·005 | –0·26 |
| Unknown | 2·09 × 10−3 | 1·05 × 10−3 | 0·50 | 0·044 | –0·30 |
| Unknown | 6·10 × 10−4 | 2·69 × 10−4 | 0·44 | 0·003 | –0·36 |
| Unknown | 4·32 × 10−5 | 1·39 × 10−5 | 0·32 | 0·035 | –0·49 |
* Both glutamine and asparagine generate two trimethylsilyl (TMS) derivatives which were combined to generate the total levels of asparagine and glutamine. For glutamine the TMS4 derivative was multiplied by a factor of 2 before being combined with its other derivative.