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An endogenous RNA-synthesis-promoting oligopeptide from Cucurbita pepto var. patissonina

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Abstract

The effect of CPPTI (Cucurbita pepo patissonina trypsin inhibitor) on the growth of Cucurbita pepo var patissonina (White bush) was examined. Plants treated with CPPTI grew faster than untreated plants and similarly to those treated with gibberellic acid. Isolated cell nuclei from plants treated with CPPTI showed that of the three DNA-dependent RNA polymerases assayed, RNA polymerase I (EC2.7.7.6) activity was preferentially elevated.

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Abbreviations

CPPTI:

Cucurbita pepo patissonina trypsin inhibitor

GA3 :

gibberellic acid

IAA:

indole-3-acetic acid

kDa:

kilodalton

RP I:

DNA-dependent RNA polymerase I

References

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Author information

Correspondence to Jan Szopa.

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Wiśniowska, J., Rudnicki, K., Leluk, J. et al. An endogenous RNA-synthesis-promoting oligopeptide from Cucurbita pepto var. patissonina . Planta 173, 46–51 (1988). https://doi.org/10.1007/BF00394486

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Key words

  • Cucurbita
  • Phytohormone
  • RNA polymerase