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Morphological and Anatomical Effects of Benefin Vapors on Tobacco (Nicotiana tabacum)

  • Yuji Yamasue (a1), Arch D. Worsham (a2) and Charles E. Anderson (a3)

Abstract

In tobacco (Nicotiana tabacum L. 'Speight G-28′) exposed to benefin (N-butyl-N-ethyl-α,α,α-trifluoro-2,6-dinitro-p-toluidine) vapors from treated soil, the leaves formed after treatment were shortened, narrowed, distorted in shape, and had an abnormal vein pattern. The leaves that had developed before treatment did not have these symptoms. More leaves developed on treated than on untreated plants. The height of treated plants was reduced and many axillary buds became active prematurely. The injured leaves, in general, had fewer epidermal cells, stomata, and trichomes per unit surface area; a smaller volume of intercellular space; and were thicker than those of untreated plants. Many of the meristematic cells in the leaf primordia and shoot apex of treated plants contained large and distorted nuclei and were oriented in improper planes. The plate meristems established by activity of the marginal meristems gave rise to a mass of undifferentiating parenchyma cells in the mesophyll of the young leaves. There was little formation of the palisade or spongy mesophyll layers, but enlargement of the undifferentiating cells caused a radial expansion of the lamina.

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1. Ashton, F. M. and Crafts, A. S. 1973. Mode of Action of Herbicides. John Wiley & Sons, Inc., New York. 504 pp.
2. Bartels, P. G. and Hilton, J. L. 1973. Comparison of trifluralin, oryzalin, pronamide, propham, and colchicine treatments on microtubules. Pestic. Biochem. Physiol. 3:462472.
3. Bayer, D. E., Foy, C. L., Mallory, T. E., and Cutter, E. G. 1967. Morphological and histological effects of trifluralin on root development. Amer. J. Bot. 54:945952.
4. Funderburk, H. H. Jr., Schultz, D. P., Negi, N. S., Rodriguez-Kabana, R., and Curl, E. A. 1967. Metabolism of trifluralin by soil microorganisms and higher plants. Proc. South. Weed Conf. 20:389.
5. Golab, T., Herberg, R. J., Gramlich, J. V., Raun, A. P., and Probst, G. W. 1970. Fate of benefin in soils, plants, artificial rumen fluid, and the ruminant animal. J. Agric. Food Chem. 18:838844.
6. Hess, F. D. and Bayer, D. E. 1975. The effect of trifluralin on the ultrastructure of dividing cells of the root meristem of cotton (Gossypium hirsutum L. ‘Acala 4–42’). J. Cell Sci. 15:429441.
7. Hess, F. D. and Bayer, D. E. 1977. Binding of the herbicide trifluralin to Chlamydomonas flagellar tubulin. J. Cell Sci. 24:351360.
8. Johansen, D. A. 1940. Plant Microtechnique. McGraw-Hill, New York, pp 8084 and 126–138.
9. Long, J. W., Thompson, L. Jr., and Rieck, C. E. 1974. Absorption, accumulation, and metabolism of benefin, diphenamid, and pebulate by tobacco seedlings. Weed Sci. 22:4247.
10. Parka, S. J. and Soper, O. F. 1977. The physiology and mode of action of dinitroaniline herbicides. Weed Sci. 25:7987.
11. Probst, G. W., Golab, T., Herberg, R. J., Holzer, F. J., Parka, S. J., van der Schans, C., and Tepe, J. B. 1967. Fate of trifluralin in soils and plants. J. Agric. Food Chem. 15:592599.
12. Schultz, D. P., Funderburk, H. H. Jr., and Negi, N. S. 1968. Effect of trifluralin on growth, morphology, and nucleic acid synthesis. Plant Physiol. 43:265273.
13. Swanson, C. R. 1972. Dinitroaniline herbicides; biological activity, structure relationship, and mode of action. Proc. Second IUPAC Congr. Pestic. Chem. Tohori, A. S., ed. V:87112. Gordon and Breach Sci. Pub., New York.
14. Talbert, R. E. 1965. Effects of trifluralin on soybean root development. Proc. South. Weed Conf. 18:652.
15. Yamasue, Y., and Worsham, A. D. 1980. Effects of benefin vaporizing from soils on tobacco (Nicotiana tabacum) foliage. Weed Sci. 28:306311.

Keywords

Morphological and Anatomical Effects of Benefin Vapors on Tobacco (Nicotiana tabacum)

  • Yuji Yamasue (a1), Arch D. Worsham (a2) and Charles E. Anderson (a3)

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