Hostname: page-component-848d4c4894-xm8r8 Total loading time: 0 Render date: 2024-06-22T03:27:28.024Z Has data issue: false hasContentIssue false
  • English
  • Français

Effects of Pyrazon on Bean Chloroplast Ultrastructure

Published online by Cambridge University Press:  12 June 2017

J. LaMar Anderson  and
J. Philip Schaelling
J. LaMar Anderson
Affiliation:
Department of Plant Science, Utah State University, Logan, Utah
J. Philip Schaelling
Affiliation:
Department of Plant Science, Utah State University, Logan, Utah
Get access Rights & Permissions [Opens in a new window]

Abstract

The fine structure of the chloroplasts of bean (Phaseolus vulgaris L., var. Tendercrop) was grossly altered by treatment with 5-amino-4-chloro-2-phenyl-3(2H)-pyridazinone (pyrazon) when plants were grown in a treated medium. Alterations occurred first at the leaf margins and preceded visual symptoms. Chloroplasts became spherical and swollen rather than discoid, clumped rather than peripherally arranged, and were totally devoid of starch. Grana formation was inhibited; the thylakoids became swollen and perforated, and they ultimately disintegrated. Concomitant with grana inhibition was the increase in size and number of lipid globules. Occasional breakage of the outer chloroplast membrane was observed. It is proposed that these changes result because pyrazon inhibits thylakoid structural protein formation.

Type
Research Article
Information
Weed Science , Volume 18 , Issue 4 , July 1970 , pp. 455 - 459
Copyright
Copyright © 1970 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. Ashton, F. M., Bisalputra, T. and Risley, E. B. 1966. Effect of atrazine on Chlorella vulgaris . Amer. J. Bot. 53:217–219.Google Scholar
2. Ashton, F. M., Gifford, E. M. Jr. and Bisalputra, T. 1963. Structural changes in Phaseolus vulgaris induced by atrazine II. Effects on the fine structure of chloroplasts. Bot. Gaz. 124:336–343.Google Scholar
3. Bailey, J. L., Thornber, J. P. and Whyborn, A. G. 1966. The chemical nature of chloroplast lamellae, 1:243–255 In Goodwin, T. W. (ed.) Biochemistry of Chloroplasts. Academic Press, New York.Google Scholar
4. Bartels, P. G. 1964. An electron microscopic study of chloroplast development in wheat seedlings treated with 3-amino-1,2,4-triazole. Plant Physiol. 39:lxviii.Google Scholar
5. Bartels, P. G. 1965. Effect of amitrole on ultrastructure of plastids in seedlings. Plant & Cell Physiol. 6:361–364.CrossRefGoogle Scholar
6. Bartels, P. G. and Pegelow, E. J. Jr. 1968. The action of sirmate (3,4-dichlorobenzyl methylcarbamate) on chloroplast ribosomes of Triticum vulgare L. seedlings. J. Cell Biol. 37(2):C1–C6.CrossRefGoogle Scholar
7. Coulter, H. P. 1967. Rapid and improved methods for embedding biological tissues in epon 812 and araldite 502. J. Ultra. Res. 20:346–355.CrossRefGoogle ScholarPubMed
8. Frank, R. and Switzer, C. M. 1969. Effects of pyrazon on growth, phytosynthesis and respiration. Weed Sci. 17:344–348.Google Scholar
9. Gunning, B. E. S. and Jagoe, M. P. 1966. The prolamellae body, 2:655–676. In Goodwin, T. W. (ed.) Biochemistry of Chloroplasts. Academic Press, New York.Google Scholar
10. Hill, E. R., Putala, E. C., and Vengris, J. 1968. Atrazineinduced ultrastructural changes of barnyardgrass chloroplasts. Weed Sci. 16:377–380.CrossRefGoogle Scholar
11. Kirk, J. T. O. and Tilney-Bassett, R. A. E. 1967. The Plastids, their Chemistry, Structure, Growth and Inheritance. W. H. Freeman and Co., San Francisco. 608 p.Google Scholar
12. Klein, S. and Neuman, J. 1966. The greening of etiolated bean leaves and the development of chloroplast fine structure in absence of photosynthesis. Plant & Cell Physiol. 7:115–122.Google Scholar
13. Rodebush, J. E. and Anderson, J. L. 1970. Morphological and anatomical effects of pyrazon on bean. Weed Sci. 18: 443–446.Google Scholar