Molecular and physiological effects of environmental UV radiation on fungal conidia

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• 作者：Gilberto U. L. Braga ; Drauzio E. N. Rangel ; éverton K. K. Fernandes…
• 关键词：Fungal photobiology ; UV tolerance ; UV ; induced damage ; Microbial sunscreens ; Conidia ; Plant ; pathogenic fungi ; Insect ; pathogenic fungi
• 刊名：Current Genetics
• 出版年：2015
• 出版时间：August 2015
• 年：2015
• 卷：61
• 期：3
• 页码：405-425
• 全文大小：827 KB
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• 作者单位：Gilberto U. L. Braga (1) (2)
  Drauzio E. N. Rangel (3)
  éverton K. K. Fernandes (4)
  Stephan D. Flint (5)
  Donald W. Roberts (6)
  
  1. Departamento de Análises Clínicas, Toxicológicas E Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeir?o Preto, Universidade de S?o Paulo, Ribeir?o Preto, SP, Brazil
  2. Research Support Center in Natural and Synthetic Products, Faculdade de Ciências Farmacêuticas de Ribeir?o Preto, Universidade de S?o Paulo, Ribeir?o Preto, SP, Brazil
  3. Instituto de Pesquisa e Desenvolvimento, Universidade do Vale do Paraíba, S?o José dos Campos, SP, Brazil
  4. Institute of Tropical Pathology and Public Health, Universidade Federal de Goiás, Goiania, GO, Brazil
  5. Department of Forest, Rangeland, and Fire Sciences, University of Idaho, Moscow, ID, USA
  6. Department of Biology, Utah State University, Logan, UT, USA
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Microbial Genetics and Genomics
  Microbiology
  Biochemistry
  Cell Biology
  Plant Sciences
  Proteomics
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1432-0983

文摘

Conidia are specialized structures produced at the end of the asexual life cycle of most filamentous fungi. They are responsible for fungal dispersal and environmental persistence. In pathogenic species, they are also involved in host recognition and infection. Conidial production, survival, dispersal, germination, pathogenicity and virulence can be strongly influenced by exposure to solar radiation, although its effects are diverse and often species dependent. UV radiation is the most harmful and mutagenic waveband of the solar spectrum. Direct exposure to solar radiation for a few hours can kill conidia of most fungal species. Conidia are killed both by solar UV-A and UV-B radiation. In addition to killing conidia, which limits the size of the fungal population and its dispersion, exposures to sublethal doses of UV radiation can reduce conidial germination speed and virulence. The focus of this review is to provide an overview of the effects of solar radiation on conidia and on the major systems involved in protection from and repair of damage induced by solar UV radiation. The efforts that have been made to obtain strains of fungi of interest such as entomopathogens more tolerant to solar radiation will also be reviewed.