Phototoxicity of selected non-ionic surfactants to soybean Glycine max cell suspensions
The phytotoxicity of a series of linear alcohol ethylene oxide adduct non-ionic surfactants to achlorophyllous soybean Glycine max (L.) Merr. var. Wilkin cell suspensions was determined. The compounds tested were 1-dodecanol (12-0), four of its ethylene oxide (EO) adducts, and an adduct of 1-decanol...
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Published in | Environmental pollution. Series A. Ecological and biological Vol. 27; no. 3; pp. 197 - 206 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
1982
|
Subjects | |
Online Access | Get full text |
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Summary: | The phytotoxicity of a series of linear alcohol ethylene oxide adduct non-ionic surfactants to achlorophyllous soybean
Glycine max (L.) Merr. var. Wilkin cell suspensions was determined. The compounds tested were 1-dodecanol (12-0), four of its ethylene oxide (EO) adducts, and an adduct of 1-decanol with 6·7 (average) EO units (10-
6·7
). Three of the dodecanol adducts were homogeneous surfactant preparations with 2,6 or 8 EO (12-2, 12-6, 12-8, respectively) and one had an average of 17 EO (12-
17
). The 12-0 compound had no effect on cell growth. Its lipophilic EO adducts 12-2 and 12-6 stimulated growth slightly (less than 30%) at the lower concentrations (22 to 55 μ
m and 7 to 26 μ
m, respectively) 8 days after treatment. All compounds except 12-0 inhibited growth at the higher concentrations (ranging from 11 to 120 μ
m, depending on the compound). Growth inhibition by these adducts increased with EO chain length from 12-2 to 12-8 and then decreased for the very hydrophilic 12-
17
. Growth was only slowed by surfactant treatments at intermediate concentrations and eventually the cells attained nearly the same maximum dry weight as untreated cells. The 10-
6·7
surfactant affected the cultures similarly, but not identically, to the 12-6 and 12-8 surfactants. The surface tensions of the treating solutions were measured. The concentrations of 12-6, 12-8, 12-
17
and 10-
6·7
at which phytotoxicity occurred were too low for micelle formation. |
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ISSN: | 0143-1471 |
DOI: | 10.1016/0143-1471(82)90025-3 |