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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/72362
Title: 
Development of mutants of coniothyrium minitans with improved efficiency for control of sclerotinia sclerotiorum
Author(s): 
Institution: 
  • Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
  • Universidade Estadual Paulista (UNESP)
  • Birkbeck College
ISSN: 
1427-4345
Abstract: 
Coniothyrium minitans (CM) is hyperparasitic to Sclerotinia sclerotiorum (SS), a pathogen of many economically important crops. In this paper, we describe the isolation of improved mutants of CM, using a UV - irradiation regime, with altered chitinase production and tolerance to high concentration of iprodione, which are effective against SS. Three out of the 59 mutants obtained inhibited the mycelial growth of CM. Infectivity of sclerotia by the new mutants was assayed by the plant-tissue-based system using carrot segments. More than 80% of sclerotia were colonized by the mutants and the wild-type CM. The mutant strains retained ability to produce significant amounts of chitinase. The mutants differed from their wild-type strain in appearance, morphology and sporulation. In conclusion, the results presented here provide evidence that the new biotypes of C. minitans are effective in controlling S. sclerotiorum.
Issue Date: 
1-Apr-2011
Citation: 
Journal of Plant Protection Research, v. 51, n. 2, p. 179-183, 2011.
Time Duration: 
179-183
Keywords: 
  • antibiotic production
  • biological control
  • Coniothyrium minitans
  • iprodione
  • resistance
  • Sclerotinia sclerotiorum
  • Daucus carota
Source: 
http://dx.doi.org/10.2478/v10045-011-0031-y
URI: 
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/72362
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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