Table 2. HRAC (2022) Classification of Commercial Herbicide Molecular Targets (Those in Bold Are Also Found in Fungi, and Those in Both Bold and Italics are Targets of Commercial Fungicides)a.
| classification group | target |
|---|---|
| 1 | acetyl CoA carboxylase |
| 2 | acetolactate synthase |
| 3 | microtubule subunits |
| 4 | auxin mimics (F-box proteins) |
| 5 and 6 | D-1 protein of photosystem II |
| 9 | 5-enolypyruvylshikimate-3-phosphate synthase |
| 10 | glutamine synthetase |
| 12 | phytoene desaturase |
| 13 | deoxy-D-xyulose-5-phosphate synthase |
| 14 | protoporphyrinogen oxidase |
| 15 | very long-chain fatty acid synthase |
| 18 | dihydropteroate synthase |
| 19 | auxin transport inhibitor |
| 22 | electron diversion from PSI |
| 23 | microtubule organization |
| 24 | mitochondrial uncoupler |
| 27 | hydroxyphenyl pyruvate dioxygenase |
| 28 | dihydroorotate dehydrogenase |
| 29 | cellulose synthesis |
| 30 | fatty acid thioesterase |
| 31 | Ser/Thr protein phosphatase |
| 32 | solanyl diphosphate synthase |
| 33 | homogentisate solanyltransferase |
| 34 | lycopene cyclase |
a
The molecular targets of several commercial chemical herbicides are listed as unknown by HRAC.