Skip to main content
NCBI home page
Plant Physiology logoLink to Plant Physiology
. 1980 Dec;66(6):1106–1109. doi: 10.1104/pp.66.6.1106

Ethylene: Indicator but Not Inducer of Phytoalexin Synthesis in Soybean 1

Inge Paradies 1,2, Jörg R Konze 1,2, Erich F Elstner 1,2,2, Jack Paxton 1,2
PMCID: PMC440798  PMID: 16661585

Abstract

Cell wall preparations (elicitors) from Phytophthora megasperma var. sojae increase C2H4 formation, phenylalanine ammonia lyase activity, and glyceollin accumulation in soybean cotyledons within about 1.5, 3, and 6 hours after treatment, respectively. The immediate precursor of C2H4, 1-aminocyclopropane-1-carboxylic acid, stimulates C2H4 formation like the elicitor within 1.5 hours after administration, whereas phenylalanine ammonia lyase activity and glyceollin concentration remain unchanged. Aminoethoxyvinylglycine, a specific inhibitor of C2H4 formation in higher plants, inhibits elicitor-induced C2H4 formation by about 95% but has no effects on phenylalanine ammonia lyase or glyceollin accumulation. It was concluded that C2H4 is a signal accompanying the specific recognition process which finally leads to the induction of phytoalexin formation, but it is not functioning as a link or messenger in the induction sequence of glyceollin accumulation.

Full text

PDF

Images in this article

Image
on p.

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Adams D. O., Yang S. F. Ethylene biosynthesis: Identification of 1-aminocyclopropane-1-carboxylic acid as an intermediate in the conversion of methionine to ethylene. Proc Natl Acad Sci U S A. 1979 Jan;76(1):170–174. doi: 10.1073/pnas.76.1.170. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Chalutz E., Stahmann M. A. Induction of pisatin by ethylene. Phytopathology. 1969 Dec;59(12):1972–1973. [PubMed] [Google Scholar]
  3. Ebel J., Ayers A. R., Albersheim P. Host-Pathogen Interactions: XII. Response of Suspension-cultured Soybean Cells to the Elicitor Isolated from Phytophthora megasperma var. sojae, a Fungal Pathogen of Soybeans. Plant Physiol. 1976 May;57(5):775–779. doi: 10.1104/pp.57.5.775. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Homans A. L., Fuchs A. Direct bioautography on thin-layer chromatograms as a method for detecting fungitoxic substances. J Chromatogr. 1970 Sep 16;51(2):327–329. doi: 10.1016/s0021-9673(01)96877-3. [DOI] [PubMed] [Google Scholar]
  5. Yu Y. B., Adams D. O., Yang S. F. Regulation of Auxin-induced Ethylene Production in Mung Bean Hypocotyls: Role of 1-Aminocyclopropane-1-Carboxylic Acid. Plant Physiol. 1979 Mar;63(3):589–590. doi: 10.1104/pp.63.3.589. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Zähringer U., Ebel J., Grisebach H. Induction of phytoalexin synthesis in soybean. Elicitor-induced increase in enzyme activities of flavonoid biosynthesis and incorporation of mevalonate into glyceollin. Arch Biochem Biophys. 1978 Jun;188(2):450–455. doi: 10.1016/s0003-9861(78)80029-0. [DOI] [PubMed] [Google Scholar]

Articles from Plant Physiology are provided here courtesy of Oxford University Press

RESOURCES