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. 1969 Feb;44(2):235–241. doi: 10.1104/pp.44.2.235

Ethylene-induced Isocoumarin Formation in Carrot Root Tissue

E Chalutz a, J E Devay a, E C Maxie a
PMCID: PMC396068  PMID: 16657052

Abstract

The concentrations of 3-methyl-6-methoxy-8-hydroxy-3,4-dihydroisocoumarin (MMHD) formed in carrot roots inoculated with certain fungi or treated with indole-3-acetic acid, 2,4-dichlorophenoxyacetic acid, or 2,4,5-trichlorophenoxyacetic acid (2,4,5-T), were related to the amount of ethylene produced by the root tissue. Ethylene applied exogenously in concentrations above 0.3 ppm induced the formation of MMHD in carrot root discs. Continued production of MMHD required the continued presence of ethylene. The amounts of MMHD in the discs were reduced by CO2, an inhibitor of ethylene action, and by reduction of the partial pressure of ethylene in fungus-inoculated or 2,4,5-T-treated carrot root discs. The results indicate that ethylene is required for the induction of MMHD formation by carrot root tissue.

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Selected References

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

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