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Accumulation of Anthranilic Acid by a Mutant of Maize

Teas, H. J. and Anderson, E. G. (1951) Accumulation of Anthranilic Acid by a Mutant of Maize. Proceedings of the National Academy of Sciences of the United States of America, 37 (10). pp. 645-649. ISSN 0027-8424.

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In studies on the induction of gene mutations by high energy radiation from the Bikini atom bomb, X-ray and other sources, a large number of seedling cultures have been grown for observation. Since January, 1949, maize seedling cultures have been observed by the use of filtered ultraviolet light. Normal seedlings viewed by ultraviolet light have a dull reddish-purple appearance due to the red fluorescence of chlorophyll plus the reflection of a small amount of visible blue-violet light from the lamp (1). Several cultures, all originating from a single seed exposed at Bikini, showed segregation of a mutant type which exhibited an intense bluish-white fluorescence. In daylight no difference could be seen between the blue-fluorescent and normal seedlings. The fluorescence varies somewhat from plant to plant, both in extent and in the time or rate of development. The fluorescence increases with the age of the plants until about the four-leaf stage, then decreases and is seldom observed in plants over two feet in height. Usually the first leaf shows the most intense fluorescence. At the time of pollen shedding, anthers in the tassel fluoresce bluish-white, even more brilliantly than the seedlings. This fluorescence is localized in the anther walls. The immature pollen also fluoresces slightly, mature pollen not at all.

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Additional Information:Copyright © 1951 by the National Academy of Sciences. Communicated by G. W. Beadle, August 31, 1951. This work was carried out with funds supplied by the Atomic Energy Commission administered through the Office of Naval Research, United States Navy, Contract N6 onr-244 Task Order V.
Issue or Number:10
Record Number:CaltechAUTHORS:TEApnas51
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10391
Deposited By: Archive Administrator
Deposited On:01 May 2008
Last Modified:03 Oct 2019 00:09

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