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Effects of Glyphosate on the Growth Rate of Chlorella

Published online by Cambridge University Press:  12 June 2017

S. L. Christy ,
E. P. Karlander  and
J. V. Parochetti
S. L. Christy
Affiliation:
Dep. Bot., Univ. Maryland, College Park, MD 20742
E. P. Karlander
Affiliation:
Faculty Oriented Programs, N.S.F., Wash., D.C. 20006, leave of absence from Bot. Dep., Univ. of Maryland, College Park, MD 20742
J. V. Parochetti
Affiliation:
Pesticides, Applicator Training & Weed Sci., Sci. Ed. Adm., Ext., U.S. Dep. Agric., Wash., D.C. 20250
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Abstract

The unicellular green alga, Chlorella sorokiniana Shihira and Krauss, was cultured in vitro using an inorganic growth medium with various concentrations of the herbicide glyphosate [N-(phosphonomethyl)glycine]. Growth rates, in terms of ceil doublings per day, were determined for cells inoculated into media containing from 5.91 × 10−6 M to 591 × 10−6M glyphosate. Comparisons with a control, which supported 10.4 doublings/day, showed growth only slightly reduced at 5.91 × 10−6M and 11.8 × 10−6M, with averages of 9.7 and 9.5 doublings/day; reduced by more than half at 17.7 × 10−6M with an average of 4.4 doublings/day; and prevented at all higher concentrations. In addition to completely preventing growth at 23.7 × 10−6M and above, glyphosate seemed to cause a deterioration of the inoculum cells. Filtering the media containing 5.91 × 10−6M, 11.8 × 10−6M, and 17.7 × 10−6M through kaolinite prior to introduction of the alga reduced the inhibition previously noted at 17.7 × 10−6M and resulted in growth rates from 9.1 to 9.5 doublings/day.

Keywords

Soil inactivationnon-target organisms
Type
Research Article
Information
Weed Science , Volume 29 , Issue 1 , January 1981 , pp. 5 - 7
Copyright
Copyright © 1981 by the Weed Science Society of America 

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References

Literature Cited

1. Anderson, W. P. 1977. Weed Science: Principles. West Publishing Co. San Francisco. 289 pp.Google Scholar
2. Blythe, T. O., Grooms, S. M., and Frans, R. E. 1979. Determination and characterization of the effects of fluometuron and MSMA on Chlorella . Weed Sci. 27:294–299.Google Scholar
3. Bua-ngam, T. and Mercado, B. L. 1977. Response of Pistia stratiotes L. to selective and non-selective herbicides in rice. Philipp. Weed Sci. Bull. 4:1–6.Google Scholar
4. Chimiklis, P. E. and Karlander, E. P. 1973. Light and calcium interactions in Chlorella inhibited by sodium chloride. Plant Physiol. 51:48–56.CrossRefGoogle ScholarPubMed
5. Davis, C. and Harvey, R. G. 1979. Reversal of glyphosate toxicity to alfalfa calli by phenylalanine and tyrosine. Proc. Northeast. Weed Sci. Soc. 33:112–113.Google Scholar
6. Evans, D. M. 1978. Aquatic weed control with the isopropylamine salt of N-phosphonomethyl glycine. Proc. 5th EWRS Inter. Symp. on Aquatic Weeds, Amsterdam. pp. 171–178.Google Scholar
7. Folmar, L. C., Sanders, H. O., and Julin, A. M. 1979. Toxicity of the herbicide glyphosate and several of its formulations to fish and aquatic invertebrates. Arch. Environ. Contam. Toxicol. 8:269–278.Google Scholar
8. Grossbard, Erna and Wingfield, G. I. 1978. Effects of paraquat, aminotriazole and glyphosate on cellulose decomposition. Weed Res. 18:347–353.CrossRefGoogle Scholar
9. Haderlie, L. C., Widholm, J. M., and Slife, F. W. 1977. Effects of glyphosate on carrot and tobacco cells. Plant Physiol. 60:40–43.Google Scholar
10. Hensley, D. L., Beuerman, D. S. N., and Carpenter, P. L. 1978. The inactivation of glyphosate by various soils and metal salts. Weed Res. 18:287–291.Google Scholar
11. Hoagland, R. E. and Paul, R. N. 1978. Ultrastructural effects of N-(phosphonomethyl)glycine on mesophyll cells of Cyperus rotundus L. (Abstr.). Suppl, Plant Physiol. 62:42.Google Scholar
12. Moshier, L. J. and Penner, D. 1978. Factors influencing microbial degradation of 14C-glyphosate to 14CO2 in soil. Weed Sci. 26:686–691.Google Scholar
13. Schueneman, T. J. and Hall, C. B. 1977. Threshold toxicity study with glyphosate applied to tomato via foliar or root application. Abstr. Weed Sci. Soc. Am. p. 38.Google Scholar
14. Sprankle, P., Meggitt, W. F., and Penner, D. 1975. Rapid inactivation of glyphosate in the soil. Weed Sci. 23:224–228.Google Scholar
15. Sprankle, P., Meggitt, W. F., and Penner, D. 1975. Adsorption, mobility, and microbial degradation of glyphosate in the soil. Weed Sci. 23:229–234.Google Scholar
16. Stahlman, P. W. and Phillips, W. M. 1979. Inhibition of glyphosate phytotoxicity. Weed Sci. 27:575–577.Google Scholar
17. Welker, W. V. Jr. and Riemer, D. N. 1978. The effects of multiple applications of glyphosate upon waterlilies (Abstr.). Proc. Northeast. Weed Sci. Soc. 32:338.Google Scholar