Skip to main content
NCBI home page
Plant Physiology logoLink to Plant Physiology
. 1989 May;90(1):1–5. doi: 10.1104/pp.90.1.1

Role of Ethylene Metabolism in Amaranthus retroflexus

Ilya Raskin 1,2, Elmo M Beyer Jr 1,2
PMCID: PMC1061663  PMID: 16666717

Abstract

14C-Ethylene was metabolized by etiolated pigweed seedlings (Amaranthus retroflexus L.) in the manner similar to that observed in other plants. The hormone was oxidized to 14CO2 and incorporated into 14C-tissue components. Selected cyclic olefins with differing abilities to block ethylene action were used to determine if ethylene metabolism in pigweed is necessary for ethylene action. 2,5-Norbornadiene and 1,3-cyclohexadiene were effective inhibitors of ethylene action at 800 and 6400 microliters per liter, respectively, in the gas phase, while 1,4-cyclohexadiene and cyclohexene were not. However, all four cyclic olefins inhibited the incorporation and conversion of 14C-ethylene to 14CO2 by 95% with I50 values below 100 microliters per liter. The results indicate that total ethylene metabolism does not directly correlate with changes in ethylene action. Additionally, the fact that inhibition of ethylene metabolism by the cyclic olefins did not result in a corresponding increase in ethylene evolution indicates that ethylene metabolism does not serve to significantly reduce endogenous ethylene levels.

Full text

PDF
1

Images in this article

4Figure 6
on p.4

Selected References

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

  1. Beyer E. M. C(2)H(4): Its Incorporation and Metabolism by Pea Seedlings under Aseptic Conditions. Plant Physiol. 1975 Aug;56(2):273–278. doi: 10.1104/pp.56.2.273. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Beyer E. M. C(2)H(4): Its Incorporation and Oxidation to CO(2) by Cut Carnations. Plant Physiol. 1977 Aug;60(2):203–206. doi: 10.1104/pp.60.2.203. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Beyer E. M. Effect of silver ion, carbon dioxide, and oxygen on ethylene action and metabolism. Plant Physiol. 1979 Jan;63(1):169–173. doi: 10.1104/pp.63.1.169. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Beyer E. M., Sundin O. C(2)H(4) metabolism in morning glory flowers. Plant Physiol. 1978 Jun;61(6):896–899. doi: 10.1104/pp.61.6.896. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Beyer E. M. [C]Ethylene Metabolism during Leaf Abscission in Cotton. Plant Physiol. 1979 Dec;64(6):971–974. doi: 10.1104/pp.64.6.971. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Filser J. G., Bolt H. M. Exhalation of ethylene oxide by rats on exposure to ethylene. Mutat Res. 1983 Apr;120(1):57–60. doi: 10.1016/0165-7992(83)90074-x. [DOI] [PubMed] [Google Scholar]
  7. Kende H., Hanson A. D. Relationship between Ethylene Evolution and Senescence in Morning-Glory Flower Tissue. Plant Physiol. 1976 Apr;57(4):523–527. doi: 10.1104/pp.57.4.523. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. de Bont J. A. Oxidation of ethylene by bacteria. Ann Appl Biol. 1975 Sep;81(1):119–121. doi: 10.1111/j.1744-7348.1975.tb00524.x. [DOI] [PubMed] [Google Scholar]

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

RESOURCES