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Norstadt FA, McCalla TM. Phytotoxic Substance from a Species of Penicillium. Science. 1963;140(3565):410-1doi: 10.1126/science.140.3565.410.
Norstadt, F. A., & McCalla, T. M. (1963). Phytotoxic Substance from a Species of Penicillium. Science (New York, N.Y.), 140(3565), 410-1. https://doi.org/10.1126/science.140.3565.410
Norstadt, F A, and McCalla, T M. "Phytotoxic Substance from a Species of Penicillium." Science (New York, N.Y.) vol. 140,3565 (1963): 410-1. doi: https://doi.org/10.1126/science.140.3565.410
Norstadt FA, McCalla TM. Phytotoxic Substance from a Species of Penicillium. Science. 1963 Apr 26;140(3565):410-1. doi: 10.1126/science.140.3565.410. PMID: 17815809.
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Science. 1963 Apr 26;140(3565):410-1. doi: 10.1126/science.140.3565.410.

Phytotoxic Substance from a Species of Penicillium.

Science (New York, N.Y.)

F A Norstadt, T M McCalla

PMID: 17815809 DOI: 10.1126/science.140.3565.410

Abstract

A Penicillium urticae Bainer, isolated from subsurface-tilled plots showing reduced wheat growth, produced a phytotoxic substance. The melting point and infrared and ultraviolet spectra of the crystalline material showed this substance to be patulin. Wheat shoot growth inhibition of 50 percent required 20, 20, and 75 parts per million of patulin in solution, sand, and soil culture, respectively.

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