title: Effects of gamma radiation on fungi infected rice (in vitro).
abstract: OBJECTIVE
  This work focuses on the effect of gamma radiation on seed born fungi (in vitro) on Oryza sativa (Swarna, Initial Evaluation Trial-5656).
  
  
  METHODS
  The responses of fungi to gamma radiation (0-4.2 kGy; 0.12 kGy/h) were studied in individual cultures of major seed-borne fungi including Alternaria alternata, Aspergillus flavus, Trichoderma viride and Curvularia geniculata.
  
  
  RESULTS
  The inactivation of individual fungal-viability was noted between 1.0-2.0 kGy for A. alternata and A. flavus and 0.5-1.0 kGy for T. viride and C. geniculata. Complete inhibition was observed at <2.5 kGy. Formations of multiple germ tubes were noted in A. alternata and A. flavus at 2 kGy and 2.5 kGy, respectively. A. flavus required a higher dose to reduce viability to 10% (D(10)) value in comparison to other selected fungi.
  
  
  CONCLUSIONS
  Different fungi exhibited different radiosensitivity. The dose range of 2-2.5 kGy was effective in killing all selected fungi. The fungi showing a higher D(10) value exhibited multiple germ tubes.
authors.affiliation: Department of Environmental Science, University of Kalyani, Nadia, India. jyoti_maity@yahoo.com
authors.forename: Jyoti Prakash
authors.initials: JP
authors.lastname: Maity
authors.forename: Sandeep
authors.initials: S
authors.lastname: Kar
authors.forename: Shashwata
authors.initials: S
authors.lastname: Banerjee
authors.forename: Mathummal
authors.initials: M
authors.lastname: Sudershan
authors.forename: Anindita
authors.initials: A
authors.lastname: Chakraborty
authors.forename: Subhas C
authors.initials: SC
authors.lastname: Santra
mesh_terms: D004307:Dose-Response Relationship, Radiation; D005658:Fungi / Q000166:cytology / Q000254:growth & development / Q000528:radiation effects*; D005720:Gamma Rays; D012275:Oryza / Q000382:microbiology*; D011836:Radiation Tolerance