Role of S-methylmethionine in the plant metabolism

D. Szego, E. Kósa, E. Horváth

Research output: Contribution to journalReview article

10 Citations (Scopus)


S-methylmethionine (SMM), a naturally occurring, biologically active compound, is a free amino acid derivative, which is increasingly recognised as playing an important part in the plant metabolism. SMM, which is synthesised from methionine, is involved in crucial processes in the S metabolism, such as the regulation of methionine and S-adenosyl methionine levels, the methylation processes taking place in cells, and the transport and storage of sulphur in certain phases of development. It is of great importance in the development of resistance to abiotic and biotic stress factors, as it is a direct precursor in the biosynthesis of the osmoprotectants and other S-containing compounds involved in defence mechanisms, while also influencing the biosynthesis of major plant hormones such as polyamines and ethylene. The present paper discusses our increasing understanding of the role played by SMM in the plant metabolism and its possible role in the improvement of traits that enable plants to overcome stress.

Original languageEnglish
Pages (from-to)491-508
Number of pages18
JournalActa Agronomica Hungarica
Issue number4
Publication statusPublished - Dec 1 2007



  • Methionine
  • Plant methabolism
  • S-methylmethionine (SMM)

ASJC Scopus subject areas

  • Agronomy and Crop Science

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