EC Number   |
Source Tissue |
Reference |
|---|
  2.5.1.45 | bud |
young flower buds, but not mature flowers, express homospermidine synthase and are able to catalyze pyrrolizidine alkaloid biosynthesis |
689632 |
| 2.5.1.45 | flower |
HSS expression stops just before the flower buds open |
706129 |
| 2.5.1.45 | hairy root |
- |
760004 |
| 2.5.1.45 | leaf |
- |
660106 |
| 2.5.1.45 | leaf |
HSS expression in leaves directly underneath developing inflorescences |
723473 |
| 2.5.1.45 | leaf |
HSS is expressed exclusively in nonspecialized cells of the lower epidermis of young leaves and shoots |
723473 |
| 2.5.1.45 | leaf |
plants activate a second site of HSS expression when inflorescences start to develop. HSS is localized in the bundle sheath cells of young leaves, which express the whole pyrrolizidine alkaloids biosynthetic route |
759978 |
| 2.5.1.45 | leaf |
the enzyme is expressed only in the cells of the lower leaf epidermis and the epidermis of the stem |
739261 |
| 2.5.1.45 | more |
not expressed in the aerial parts of the plant like buds, flower heads, leaves, or stems |
638084 |
| 2.5.1.45 | more |
the tissue-specific expression of HSS in this boraginaceous species is unique with respect to plant organ, tissue, and cell type, expression patterns, immunohistochemic analysis and semiquantitative RT-PCR, overview |
723473 |
