Effects of IAA on the elongation and cell wall glycosidase activities in excised rape (Brassica napus L. cv. yongdang) hypocotyl segments
1984
Jun, S.S. | Kwon, Y.M. (Seoul National Univ. (Korea R.). Dept. of Botany) | Lee, B.S. (Kongju Teacher's Coll. (Korea R.))
Effects of IAA on the elongation and cell wall glycosidase activities were investigated in excised rape (Brassica napus L. cv. yongdang) hypocotyl segments. IAA promoted the elongation of rape hypocotyl segments. In rape hypocotyls, the 1st 10-mm segments from the hook exhibited max. elongation and the capacity of elongation gradually decreased with increasing distance of each 10-mm from the hook. IAA seems to enhance elongation of the tissue segments, at least in part, by releasing hydrogen ion into the cell wall, some of which may participate in the cell wall extension process, but does not seem to trigger the activation of alpha, beta-glucosidase and alpha, beta-galactosidase
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