Naslov
Metabolism of tryptophan, indole-3-acetic acid, and related compounds in parasitic plants from the genus Orobanche
(Metabolism of tryptophan, indole-3-acetic acid, and related compounds in parasitic plants from the genus Orobanche.)

Autori
Magnus, Volker ; Šimaga, Šumski ; Iskrić, Sonja ; Kveder, Sergije

Izvornik
Plant Physiology (0032-0889) 69 (1982), 4; 853-858

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Orobanche gracilis ; Orobanche lutea ; Orobanche ramosa ; Orobanchaceae ; auxin biogenesis and metabolism ; tryptophan degradation ; indole-3-ethanol and glucoside ; tryptophol ; IAA ; indole-3-carboxaldehyde ; indole-3-methanol

Sažetak
Metabolic reactions involving the aliphatic side chain of tryptophan were studied in the holoparasitic dicotyledonous plants Orobanche gracilis Sm., O. lutea Baumg., and O. ramosa L. Unlike known autotrophic plants, the parasite metabolized L-tryptophan directly to indole-3-carboxaldehyde, which was further converted to indole-3-methanol and indole-3-carboxylic acid. Independently, these metabolites were also formed from D-tryptophan, tryptamine, indole-3-lactic acid, and indole-3-acetic acid. As in autotrophic plants, tryptophan and tryptamine were also converted, via indole-3-acetaldehyde, to indole-3-acetic acid, indole-3-ethanol, and its glucoside. The branch of tryptophan metabolism relevant to auxin biogenesis and catabolism is, therefore, not rudimentary in Orobanche but even more complex than in autotrophic higher plants.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Biologija

POVEZANOST RADA