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Plant and Cell Physiology, 1986, Vol. 27, No. 2 193-197
© 1986

Article

Swelling of Etiolated Oat Protoplasts Induced by cAMP and Red Light

Young-Sang Kim1, Doo-Khill Moon2, Joe R. Goodin3 and Pill-Soon Song4

Department of Chemistry and Biochemistry, Texas Tech University Lubbock, Texas 79409-4260, U.S.A.

4To whom correspondence regarding this paper should be addressed.

Etiolated oat protoplasts were treated with dibutyryl cAMP to study possible function of cAMP in the development by measuring the protoplast swelling. The mean diameter of protoplasts in the absence of any chemical treatment was 33.58±1.26 (SE) µm, which increased to 36.96±0.86 µm in the presence of 100 µM dibutyryl cAMP. Prostacyclin, a potent activator of adenyl cyclase, also showed a significant swelling effect (diameter 38.01±0.98 µm). Red light also elicited the swelling of protoplasts (40.26±0.8 µm).

1Present address: Department of Biology, Pusan National University, Pusan 607, Korea.

2Present address: Department of Horticulture, Cheju National University, Cheju 590, Korea.

3Present address: Department of Biological Sciences, Texas Tech University, Lubbock, TX 79409, U.S.A.

(Received June 29, 1985; Accepted November 18, 1985)
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