Plant Physiol.
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Plant Physiology 59:521-522 (1977)
© 1977 American Society of Plant Biologists

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Articles

Isolation and Identification of the Precursor of Ethane in Phaseolus vulgaris L 1,2

William W. John3 and Roy W. Curtis

a Department of Botany and Plant Pathology, Purdue University, West Lafayette, Indiana 47907

Ethane production by homogenates of Phaseolus vulgaris L. cv. Harvester was studied. The precursor of ethane was identified as linolenic acid. The liberation of ethane was optimum at pH 4.2 and was highest from homogenates of leaves and apical buds. When roots were homogenized in linolenic acid solution, ethane and ethylene production were stimulated. In corn root homogenates, ethylene biosynthesis was stimulated nearly 8-fold by linolenic acid. The enzyme responsible for ethane production from oat root homogenates was soluble and had a high molecular weight.

3 Present address: Mobile Chemical Co., P.O. Box 240, Edison, N.J. 08817.

1 Supported in part by Grant GB-23540 from the National Science Foundation.

2 Journal Paper No. 6281 of the Purdue Agricultural Experiment Station.






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Copyright © 1977 by the American Society of Plant Biologists