GROWTH-INHIBITION OF LEMNA-MINOR-L BY HYDROLYSATES OF GUM KARAYA

被引:3
作者
FOA, LC
CAMPBELL, JA
LEE, VWK
STROTHER, S
机构
[1] Department of Biological Sciences, Deakin University, Geelong
关键词
D O I
10.1016/0304-3770(92)90030-M
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Hydrolysates of gum karaya, a commercially available polysaccharide, were shown to inhibit (P < 0.05) growth of Lemna minor L. in axenic culture. The hydrolysates were dialysed using 1000 Da cutoff tubing to remove low molecular weight material such as monosaccharides and small oligosaccharides. Controls using glucose subjected to the same hydrolysis procedure did not show any inhibition compared with untreated control flasks. The growth inhibition was associated with severe chlorosis of the Lemna fronds raising the possibility that this fraction could be developed as a biodegradable herbicide for aquatic plants. Gel permeation chromatography indicated that an anthrone-positive peak was eluted from the column in a position consistent with its being an oligosaccharide or a mixture of oligosaccharides. Samples of the peak eluate were inhibitory to the growth of L. minor and caused bleaching of fronds.
引用
收藏
页码:287 / 292
页数:6
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