Herbicidal Effects of Geldanamycin and Nigericin, Antibiotics from Streptomyces Hygroscopicus

Rod Martin Heisey, Alan R. Putnam

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Geldanamycin (2) and nigericin (1) (primarily the Na+ salt) are responsible for the phytotoxicity of a Streptomyces hygrascopicus strain found to be highly active in our screens for producers of herbicidal antibiotics. After extraction from the cells, the compounds were purified with column and thin layer layer chromatography on silica gel, bioassayed for inhibition of garden cress (Lepidium sativum L.) radicle elongation, and identified with ms, ir, nmr, and cochromatography with authentic standards. Both caused 50% reduction in garden cress radicle growth at concentrations of 1-2 ppm and nearly complete inhibitions at 3-4 ppm. Symptoms of toxicity differed markedly for the two compounds. Geldanamycin at high concentrations caused radicles to turn brown and disintegrate, whereas, nigericin did not cause visible necrosis. Geldanamycin is structurally similar to the herbimycins, which are also produced by S. hygroscopicus and have been reported to have herbicidal activity. The phytotoxicity of geldanamycin and nigericin has stimulated investigation of their potential for use as natural product herbicides.

Original languageEnglish (US)
Pages (from-to)859-865
Number of pages7
JournalJournal of Natural Products
Volume49
Issue number5
DOIs
StatePublished - Jan 1 1986

Fingerprint

Nigericin
Lepidium sativum
Streptomyces
Anti-Bacterial Agents
Silica Gel
Herbicides
Chromatography
Biological Products
Toxicity
Elongation
Necrosis
Salts
geldanamycin
Growth

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Molecular Medicine
  • Pharmacology
  • Pharmaceutical Science
  • Drug Discovery
  • Complementary and alternative medicine
  • Organic Chemistry

Cite this

Heisey, Rod Martin ; Putnam, Alan R. / Herbicidal Effects of Geldanamycin and Nigericin, Antibiotics from Streptomyces Hygroscopicus. In: Journal of Natural Products. 1986 ; Vol. 49, No. 5. pp. 859-865.
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abstract = "Geldanamycin (2) and nigericin (1) (primarily the Na+ salt) are responsible for the phytotoxicity of a Streptomyces hygrascopicus strain found to be highly active in our screens for producers of herbicidal antibiotics. After extraction from the cells, the compounds were purified with column and thin layer layer chromatography on silica gel, bioassayed for inhibition of garden cress (Lepidium sativum L.) radicle elongation, and identified with ms, ir, nmr, and cochromatography with authentic standards. Both caused 50{\%} reduction in garden cress radicle growth at concentrations of 1-2 ppm and nearly complete inhibitions at 3-4 ppm. Symptoms of toxicity differed markedly for the two compounds. Geldanamycin at high concentrations caused radicles to turn brown and disintegrate, whereas, nigericin did not cause visible necrosis. Geldanamycin is structurally similar to the herbimycins, which are also produced by S. hygroscopicus and have been reported to have herbicidal activity. The phytotoxicity of geldanamycin and nigericin has stimulated investigation of their potential for use as natural product herbicides.",
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Herbicidal Effects of Geldanamycin and Nigericin, Antibiotics from Streptomyces Hygroscopicus. / Heisey, Rod Martin; Putnam, Alan R.

In: Journal of Natural Products, Vol. 49, No. 5, 01.01.1986, p. 859-865.

Research output: Contribution to journalArticle

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