Plant and Cell Physiology, 1974, Vol. 15, No. 2 249-254
© 1974
Article |
Dual pattern of DL-leucine absorption by duckweed root tips1
Department of Biology, Texas A&M University, College Station Texas 77843, U.S.A.
The rates of cellular absorption of DL-leucine from solutions of different concentrations indicate the presence of dual uptake mechanisms in root tips of Lemna minor, one in the low (0.01 to 0.2 mM) and the other in the high (5 to 25 mM) concentration range. The absorption pattern for the lower concentrations conforms to Michaelis-Menten kinetics.
1Supported in part by a Grant-in-Aid of Research from the Society of Sigma Xi.
(Received June 19, 1973; )
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