Temperature-dependent formaldehyde metabolism in bean plants. The heat shock response

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20 Citations (Scopus)


A strong correlation exists between the external temperature and the measurable amount of formaldehyde in Pinto bean leaf tissues. The highest amount was detected after the heat shock (HS) treatment of leaves. On the other hand, as a result of HS, the level of some potential formaldehyde generators (trigonelline, choline and Nε-trimethyl-l-lysine) moderately decreased in comparison to the normal room temperature (20°C). In the presence of dimedone the amount of these formaldehyde generators further decreased at all temperatures applied. In one case it was shown that about 4.5% of the radioactivity of Nε-[methyl-3H] trimethyl-l-lysine indeed accumulated in formaldemethone, indicating that N-methylated compounds could be in vivo precursors (generators) of formaldehyde in bean leaf tissues. It is proposed that formaldehyde may play a role in a dynamic demethylation-methylation process that may include also the methylation of heat shock proteins (HSPs).

Original languageEnglish
Pages (from-to)133-139
Number of pages7
JournalPlant Science
Issue number2
Publication statusPublished - 1989


  • N-trimethyl-l-lysine
  • bean
  • demethylase activity
  • formaldehyde
  • heat shock

ASJC Scopus subject areas

  • Genetics
  • Agronomy and Crop Science
  • Plant Science

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