Skip to main content
SpringerLink
Log in

Behaviour ofBipolaris sorokiniana in the rhizosphere of wheat

  • Published:
Proceedings / Indian Academy of Sciences

Summary

The results of some preliminary observations onBipolaris sorokiniana (=Helminthosporium sativum) which causes foot rot in wheat are reported here. By direct microscopic examination of the rhizosphere it was seen that the pathogen not only grew vigorously on the rhizoplane but also sporulated in abundance in the rhizosphere. A method is described for quantitative assessment of the spore load in the rhizosphere, expressed as number of spores per gram of rhizosphere soil. Using this method, a gradual decrease in spore load in the rhizosphere of wheat seedlings with increasing age was observed. Histological study of infected and uninfected roots showed intra-cellular development of the fungal hyphæ in one or two outer layers of the cortex in the case of the infected root. Fungal penetration deeper into the cortex was not seen. Disintegration of the cortical cells was evident and is indicative of degradation by enzymes of the pathogen.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Chinn, S. H. F., Ledingham, R. L. and Sallans, B. J. “Population and viability studies ofHelminthosporium sativum in field soils,”Canad. J. Bot., 1960,38, 533–39.

    Article  Google Scholar 

  • Garrett, S. D...Biology of Root-infecting Fungi, University Press, Cambridge, 1956, pp. 292.

    Google Scholar 

  • Harley, J. L...The Biology of Mycorrhiza, University Press, Aberdeen, 1959, pp. 233.

    Google Scholar 

  • Jackson, R. M. .. “Soil fungistasis and the rhizosphere,”The Ecology of Soil Fungi, An International Symposium. Edited by D. Parkinson and J. S. Waid, Liverpool University Press, 1960, p. 168–76.

  • Lingappa, B. T. and Lockwood, J. L. “The nature of the widespread soil fungistasis,”J. gen. Microbiol., 1961,26, 473–85.

    PubMed  CAS  Google Scholar 

  • Lochhead, A. G. .. “Rhizosphere micro-organisms in relation to root disease fungi,”Plant Pathology, Problems and Progress, 1908–58. Edited by C. S. Holtonet al., The University of Wisconsin Press, 1959, Chapter 30, 327–38.

  • Sadasivan, T. S. and Subramanian, C. V... “Interaction of pathogen, soil, other micro-organisms in the soil, and host,”Plant Pathology, an advanced treatise, Edited by J. G. Horsfall and A. E. Dimond.The Pathogen, Academic Press, N.Y., 1960,2 Chapter 8, 273–313.

    Google Scholar 

  • Starkey, R. L... “Some influences of the development of higher plants upon the micro-organisms in the soil—VI. Microscopic examination of the rhizosphere,”Soil Sci., 1938,45, 207–49.

    Article  CAS  Google Scholar 

  • Warcup, J. H. .. “Methods for isolation and estimation of activity of fungi in soil,”The Ecology of Soil Fungi, An International Symposium. Edited by D. Parkinson and J. S. Waid, Liverpool University Press, 1960, pp. 3–21.

Download references

Author information

Authors and Affiliations

  1. Department of Botany, University of Rajasthan, Jodhpur

    N. G. Nair

Authors
  1. N. G. Nair
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Communicated by Dr. C. V. Subramanian,f.a.sc.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Nair, N.G. Behaviour ofBipolaris sorokiniana in the rhizosphere of wheat. Proc. Indian Acad. Sci. 55, 290–295 (1962). https://doi.org/10.1007/BF03052236

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF03052236

Keywords

Search

Navigation