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Respiration of [C-14] alanine by the ectomycorrhizal fungus Paxillus involutus

Författare:
Publiceringsår: 1994
Språk: Engelska
Sidor: 87-91
Publikation/Tidskrift/Serie: FEMS Microbiology Letters
Volym: 121
Nummer: 1
Dokumenttyp: Artikel
Förlag: Wiley-Blackwell Publishing Ltd

Sammanfattning

The ectomycorrhizal fungus Paxillus involutus efficiently took up exogenously supplied [C-14]alanine and rapidly converted it to pyruvate, citrate, succinate, fumarate and to CO2, thus providing direct evidence for the utilisation of alanine as a respiratory substrate. [C-14]alanine was further actively metabolised to glutamate, glutamine and aspartate. Exposure to aminooxyacetate completely suppressed (CO2)-C-14 evolution and greatly reduced the flow of carbon from [C-14]alanine to tricarboxylic acid cycle intermediates and amino acids, suggesting that alanine aminotransferase plays a pivotal role in alanine metabolism in Paxillus involutus.

Disputation

Nyckelord

  • Biology and Life Sciences
  • Amino acid respiration
  • Aminooxyacetate
  • [14C]alanine
  • Ectomycorrhizal fungus
  • Paxillus involutus
  • TCA cycle

Övriga

Published
Yes
  • Microbial Ecology
  • ISSN: 1574-6968 (Online)
  • ISSN: 0378-1097 (Print)

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