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Related Experiment Videos

Pine stilbene synthase cDNA, a tool for probing environmental stress.

A Schwekendiek1, G Pfeffer, H Kindl

  • 1University of Marburg, Department of Chemistry, Germany.

FEBS Letters
|April 13, 1992
PubMed
Summary

Researchers isolated stilbene synthase cDNAs from pine (Pinus sylvestris) seedlings. This key enzyme

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Area of Science:

  • Plant Molecular Biology
  • Biochemistry
  • Forest Pathology

Background:

  • Pine trees (Pinus sylvestris) produce stilbenes as defense compounds.
  • Environmental stress, such as fungal infection by Botrytis cinerea, can induce stilbene production.
  • Understanding the enzymes involved in stilbene biosynthesis is crucial for plant defense research.

Purpose of the Study:

  • To isolate and characterize the cDNA encoding pinosylvin-forming stilbene synthase from Pinus sylvestris.
  • To compare the deduced amino acid sequence with known resveratrol-forming stilbene synthases.
  • To evaluate the utility of this cDNA as a tool for monitoring early environmental stress responses in pine.

Main Methods:

  • Isolation of complementary DNAs (cDNAs) from a Pinus sylvestris cDNA library.
  • Obtaining polyadenylated RNA (Poly(A)+RNA) from young pine seedlings treated with Botrytis cinerea.
  • Sequencing of a full-length cDNA encoding pinosylvin-forming stilbene synthase.
  • Bioinformatic analysis and comparison of deduced amino acid sequences.

Main Results:

  • A full-length cDNA for pinosylvin-forming stilbene synthase was successfully isolated and sequenced.
  • The deduced amino acid sequence was compared to those of resveratrol-forming stilbene synthases, revealing potential differences in substrate specificity or regulation.
  • The isolated cDNA provides a molecular tool for studying pine defense mechanisms.

Conclusions:

  • The identified cDNA coding for pinosylvin-forming stilbene synthase is a significant finding for pine molecular biology.
  • This genetic tool can be used to detect early molecular responses to environmental stress in Pinus sylvestris.
  • Further research can explore the regulation and function of this enzyme in plant defense.

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