Table 2.
Compounds detected by UPLC/ESI-QTOF MS in P. infestans spore suspension recollected after 24 h from A. thaliana leaves, which were significantly increased in WT compared with pen3
Confidence level of annotation (according to Ref. 51) is as follows: 1, verified with mass, retention time, and CID spectrum of a commercial standard or a synthesized standard (*); 3, putative compound class, based on similarity of in-source fragmentation and CID spectrum to known compound classes.
| Annotation | Elemental composition | Retention time | Change pen3/Col-0 | Quantifier ion m/z type | Quantifier ion m/z | Annotation level | Present in pen2 |
|---|---|---|---|---|---|---|---|
| min | -fold | ||||||
| (E)-p-Coumaroylagmatine | C14H20N4O2 | 3.3 | −9.6 | [M + H] + | 277.16547 | 1* | Reduced |
| S-(4-Methoxyindol-3-ylmethyl) cysteine | C13H17N2O3S | 4.22 | −3.2 | [M + H] + | 281.0942 | 1* | No |
| 4-Methoxyindol-3-yl methanol | C10H11NO2 | 5.03 | −3.7 | [M + H] + | 160.07499 | 1* | No |
| 4-Hydroxyindole-3-carbaldehyde (4OHI3CHO) | C9H7NO2 | 5.1 | −3.0 | [M + H] + | 162.05519 | 1 | No |
| Unknown indole 1 | C10H9NO2 | 5.57 | −2.5 | [M + H] + | 176.07116 | 3 | No |
| Unknown indole 2 | C10H9NO | 6.01 | −4.1 | [M + H] + | 160.07534 | 3 | No |
| Unknown indole 3 | C10H9NO2 | 6.68 | −3.6 | [M + H] + | 176.07054 | 3 | Reduced |