Journal of General Plant Pathology

, Volume 69, Issue 2, pp 115–119

Inconspicuous restraint of rice seedling growth by root-infecting fungi in soil of a rice paddy field

Authors

  • Hiromitsu Furuya
    • Faculty of Bioresource Sciences, Akita Prefectural University, Shimoshinjo, Akita 010-0195, Japan
  • Tsutomu Matsumoto
    • Akita Prefectural College of Agriculture, Ogata, Akita, Japan
  • Shin-ichi Fuji
    • Faculty of Bioresource Sciences, Akita Prefectural University, Shimoshinjo, Akita 010-0195, Japan
  • Hideki Naito
    • Faculty of Bioresource Sciences, Akita Prefectural University, Shimoshinjo, Akita 010-0195, Japan
FUNGAL DISEASES

DOI: 10.1007/s10327-002-0023-x

Cite this article as:
Furuya, H., Matsumoto, T., Fuji, S. et al. J Gen Plant Pathol (2003) 69: 115. doi:10.1007/s10327-002-0023-x

Abstract

 Rice seedling growth, estimated by plant height and root development and discoloration, was better in pasteurized soil than in unpasteurized soil obtained from a flooded rice field. Rice seedlings also grew better in sterilized soil modified by adding roots harvested from the pasteurized soil than in soil modified by adding roots harvested from the unpasteurized soil. The results demonstrate that seedling growth in the rice field soil was inhibited by soil microorganisms, even though no typical symptoms such as seedling blight or damping-off appeared. Pythium aristosporum is suggested to be involved in the inhibition. Thus, it appears that inconspicuous restraint of rice seedling growth could occur in soils of rice paddy fields.

Key words Minor root pathogenRice seedlingsSoil pasteurizationPythium aristosporumFlooded field soil

Copyright information

© Springer-Verlag Tokyo 2003