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Forskningsartikel2013Vetenskapligt granskadÖppen tillgång

Coordination of auxin and ethylene biosynthesis by the aminotransferase VAS1

Zheng, Zuyu; Guo, Yongxia; Novak, Ondrej; Dai, Xinhua; Ljung, Karin; Noel, Joseph P.; Chory, Joanne

Sammanfattning

We identify an Arabidopsis pyridoxal-phosphate-dependent aminotransferase, VAS1, whose loss-of-function simultaneously increases amounts of the phytohormone auxin and the ethylene precursor 1-aminocyclopropane-1-carboxylate. VAS1 uses the ethylene biosynthetic intermediate methionine as an amino donor and the auxin biosynthetic intermediate indole-3-pyruvic acid as an amino acceptor to produce L-tryptophan and 2-oxo-4-methylthiobutyric acid. Our data indicate that VAS1 serves key roles in coordinating the amounts of these two vital hormones.

Publicerad i

Nature Chemical Biology
2013, Volym: 9, nummer: 4, sidor: 244-246
Utgivare: NATURE PUBLISHING GROUP