Starch synthesis-, and tuber storage protein genes are differently expressed in Solanum tuberosum and in Solanum brevidens

Z Banfalvi*, A Molnar, G Molnar, L Lakatos, L Szabo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Studying in vitro stem cuttings of Solanum tuberosum induced for tuberization and those of a non-tuberizing Solanum species, differences both in morphology and in gene expression were detected. Stolen formation essentially depended on light while tuberization was triggered by the elevated level of sucrose in the medium. Genes involved in starch synthesis were induced by sucrose in both species, however, starch granules were detected only in potato, A new tuber specific cDNA clone, GM7, encoding a putative metallocarboxypeptidase inhibitor and the cDNA of a proline rich cell mall protein with S. brevidens specific expression were isolated by differential screening. Sucrose mediated transcription of the tuber storage proteins like patatin and proteinase inhibitors (Kunitz-type, winI, GM7) failed in S. brevidens.

Original languageEnglish
Pages (from-to)159-164
Number of pages6
JournalFEBS Letters
Volume383
Issue number3
Publication statusPublished - 1 Apr 1996

Keywords

  • patatin
  • proteinase inhibitor
  • Solanum brevidens
  • Solanum tuberosum
  • starch synthesis
  • tuberization
  • ADP-GLUCOSE PYROPHOSPHORYLASE
  • AMINO-ACID-SEQUENCE
  • INHIBITOR-II GENE
  • CARBOXYPEPTIDASE INHIBITOR
  • MESSENGER-RNA
  • TOMATO FRUIT
  • POTATO
  • SUCROSE
  • PATATIN
  • LEAVES

Cite this