Plant sulfur metabolism--the reduction of sulfate to sulfite

Curr Opin Plant Biol. 1998 Jun;1(3):240-4. doi: 10.1016/s1369-5266(98)80111-8.


Until recently the pathway by which plants reduce activated sulfate to sulfite was unresolved. Recent findings on two enzymes termed 5'-adenylylsulfate (APS) sulfotransferase and APS reductase have provided new information on this topic. On the basis of their similarities it is now proposed that these proteins are the same enzyme. These discoveries confirm that the sulfate assimilation pathway in plants differs from that in other sulfate assimilating organisms.

Publication types

  • Review

MeSH terms

  • DNA, Complementary
  • Evolution, Molecular
  • Gene Expression Regulation, Enzymologic
  • Oxidation-Reduction
  • Oxidoreductases / genetics
  • Oxidoreductases / metabolism
  • Oxidoreductases Acting on Sulfur Group Donors*
  • Plants / metabolism*
  • Sulfates / metabolism*
  • Sulfites / metabolism*
  • Sulfotransferases / metabolism
  • Sulfur / metabolism*


  • DNA, Complementary
  • Sulfates
  • Sulfites
  • Sulfur
  • Oxidoreductases
  • Oxidoreductases Acting on Sulfur Group Donors
  • adenylylsulfate reductase
  • Sulfotransferases
  • adenosine 5'-phosphosulfate sulfotransferase