Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-19T03:58:57.115Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of Imazamethabenz on Histology and Histochemistry of Polysaccharides in the Main Shoot of Wild Oat (Avena fatua)

Published online by Cambridge University Press:  12 June 2017

Jian Fu Chao ,
William A. Quick ,
Andrew I. Hsiao  and
Hai Sheng Xie
Jian Fu Chao
Affiliation:
Dep. Biol., Univ. Regina, Regina, SK S4S OA2
William A. Quick
Affiliation:
Dep. Biol., Univ. Regina, Regina, SK S4S OA2
Andrew I. Hsiao
Affiliation:
Agric. Canada, Res. Stn., Box 440, Regina, SK S4P 3A2
Hai Sheng Xie
Affiliation:
Dep. Biol., Univ. Regina, Regina, SK S4S OA2 Canada
Get access Rights & Permissions [Opens in a new window]

Abstract

Imazamethabenz, an acetohydroxyacid synthase (AHAS)-inhibiting herbicide, was applied at a sublethal rate (200 g ai ha–1) to foliage of greenhouse-grown wild oat plants at the 2-leaf stage without tillers. Main shoot tissues were sampled 1 to 2 wk after imazamethabenz treatment and prepared for light microscopic examination. Histological observations showed that imazamethabenz treatment did not produce drastic changes on leaf structures but did affect chloroplast integrity of fully expanded 2nd leaf and inhibited differentiation of the young 3rd leaf 1 wk after application. The internode length and the number of cells in internodes of the herbicide-treated main stem were greatly reduced, presumably due to the inhibition by imazamethabenz of intercalary meristem cell division in early stages of internode elongation. One week after imazamethabenz application, histochemical studies revealed an increased accumulation of starch granules in chloroplasts of the 2nd leaf but reduced starch levels in the main stem. This confirmed the hypothesis that AHAS inhibitors affected phloem transport of photosynthates.

Keywords

Imazamethabenz, (±)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-4 (and 5)-methylbenzoic acid (3:2)wild oat, Avena fatua L. # AVEFAChloroplast integrityintercalary growthstarch granulemetabolic sinkAVEFA
Type
Physiology, Chemistry, and Biochemistry
Information
Weed Science , Volume 42 , Issue 3 , September 1994 , pp. 345 - 352
Copyright
Copyright © 1994 by the Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Beck, E. and Ziegler, P. 1989. Biosynthesis and degradation of starch in higher plants. Annu. Rev. Plant Physiol. Plant Mol. Biol. 40:95–117.Google Scholar
2. Bestman, H. D., Lowther, A. J., and Vanden Born, W. H. 1990. Effect of chlorsulfuron on carbon metabolism in field pennycress (Thlaspi arvense L.) seedlings. Weed Sci. Soc. Am. Abstr. 30:62.Google Scholar
3. Bestman, H. D., Devine, M. D., and Vanden Born, W. H. 1990. Herbicide chlorsulfuron reduces assimilate transport out of treated leaves of field pennycress (Thlaspi arvense L.) seedlings. Plant Physiol. 93:1441–1448.Google Scholar
4. Chao, J. F. 1993. Interactions between tillering and phytotoxicity of imazamethabenz in wild oat (Avena fatua L.). M.S. Thesis, Univ. Regina, Regina, SK.Google Scholar
5. Chao, J. F., Hsiao, A. I., and Quick, W. A. 1993. Effects of imazamethabenz on the main shoot growth and tillering of wild oat (Avena fatua L.). J. Plant Growth Regul. 12:141–147.Google Scholar
6. Devine, M. D. 1989. Phloem translocation of herbicides. Rev. Weed Sci. 4:191–213.Google Scholar
7. Devine, M. D., Bestman, H. D., and Vanden Born, W. H. 1990. Physiological basis for the different phloem mobilities of chlorsulfuron and clopyralid. Weed Sci. 38:1–9.Google Scholar
8. Esau, K. 1977. Pages 360–368 in Anatomy of Seed Plants. 2nd ed. John Wiley and Sons, New York.Google Scholar
9. Hall, L. M. and Devine, M. D. 1993. Chlorsulfuron inhibition of phloem translocation in chlorsulfuron-resistant and -susceptible Arabidopsis thaliana . Pestic. Biochem. Physiol. 45:81–90.Google Scholar
10. Jain, R. and Vanden Born, W. H. 1989. Morphological and histological effects of three grass selective herbicides on developing wild oat (Avena fatua) stems. Weed Sci. 37:575–584.Google Scholar
11. Jensen, W. A. 1962. Pages 198–199 in Botanical Histochemistry. W. H. Freeman and Co., San Francisco.Google Scholar
12. Johansen, D. A. 1940. Pages 41, 88–89 in Plant Microtechnique. McGraw-Hill Book Co., New York.Google Scholar
13. Kaufman, P. B., Cassell, S. J., and Adams, P. A. 1965. On the nature of intercalary growth and cellular differentiation in internodes of Avena sativa . Bot. Gaz. 162:1–13.Google Scholar
14. Kirkland, K. and Shafer, N. E. 1982. AC 222,293, a new postemergence herbicide for cereals: Field studies. Pages 33–38 in Proc. 1982 Br. Crop Prot. Conf.—Weeds.Google Scholar
15. Kneeshaw, P. G., Kinoshita, G. B., and Luke, N. C. 1983. Weed control in cereals with AC 222,293: Canadian results. Proc. Annu. Meeting North Cent. Weed Control Conf. 38:76.Google Scholar
16. Little, D. L. and Shaner, D. L. 1991. Absorption and translocation of the imidazolinone herbicides. Pages 54–69 in Shaner, D. L. and O'Connor, S. L., eds. The Imidazolinone Herbicides. CRC Press, Boca Raton, FL.Google Scholar
17. Metealf, C. R. 1960. Pages 50–53 in Anatomy of the Monocotyledons. Vol. 1. Oxford Univ. Press, Ames House, London.Google Scholar
18. Pillmoor, J. B. and Caseley, J. C. 1987. The biochemical and physiological effects and mode of action of AC 222,293 against Alopecurus myosuroides Huds. and Avena fatua L. Pestic. Biochem. Physiol. 27:340–349.Google Scholar
19. Ray, T. B. 1982. The mode of action of chlorsulfuron: a new herbicide for cereals. Pestic. Biochem. Physiol. 17:10–17.Google Scholar
20. Shaner, D. L., Umeda, K., Ciarlante, D. R., and Los, M. 1982. AC 222,293. a new postemergence herbicide for cereals: greenhouse studies. Pages 25–31 in Proc. 1982 Br. Crop Prot. Conf.—Weeds.Google Scholar
21. Shaner, D. L., Simcox, P. D., Robson, P. A., Mangels, G., Reichert, B., Ciarlante, D. R., and Los, M. 1982. AC 222,293—Translocation and metabolic selectivity. Pages 333–339 in Proc. 1982 Br. Crop Prot. Conf.—Weeds.Google Scholar
22. Shaner, D. L. and Reider, M. L. 1986. Physiological response of corn (Zea mays) to AC 243,997 in combination with valine, leucine, and isoleucine. Pestic. Biochem. Physiol. 25:248–257.Google Scholar
23. Shaner, D. L. and Little, D. 1989. Effect of imazaquin and sulfometuron methyl on extractable acetohydroxyacid synthase activity in maize and soybeans. Pages 197–198 in Br. Crop Prot. Counc. Monogr. No. 42: Amino Acid Biosynthesis Inhibitors.Google Scholar
24. Shaner, D. L. 1991. Physiological effects of the imidazolinone herbicides. Pages 129–137 in Shaner, D. L. and O'Connor, S. L., eds. The Imidazolinone Herbicides. CRC Press, Boca Raton, FL.Google Scholar
25. Taiz, L. and Zeiger, E. 1991. Pages 169–173 in Plant Physiology. The Benjamin/Cummings Publishing Co., Inc., Redwood City, CA.Google Scholar