Effect of temperature on the phytotoxicity and cytotoxicity of Botryosphaeriaceae fungi

Forough Nazar Pour, Vanessa Ferreira, Carina Félix, João Serôdio, Artur Alves, Ana Sofia Duarte, Ana Cristina Esteves

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Botryosphaeriaceae fungi are phytopathogens and human opportunists. The influence of temperature on the phytotoxicity and cytotoxicity of culture filtrates of five Botryosphaeriaceae species was investigated. All culture filtrates of fungi grown at 25 °C were phytotoxic: symptoms were evaluated based on visual inspection of necrosis areas and on the maximum quantum yield of photosystem II, Fv/Fm. Diplodia corticola and Neofusicoccum kwambonambiense were the most phytotoxic, followed by Neofusicoccum parvum CAA704 and Botryosphaeria dothidea. Phytotoxicity dramatically decreased when strains were grown at 37 °C, except for B. dothidea. All strains, except N. parvum CAA366 and Neofusicoccum eucalyptorum, grown either at 25 °C or 37 °C, were toxic to mammalian cells; at 25 °C and at 37°C, D. corticola and B. dothidea were the most cytotoxic, respectively. Although the toxicity of B. dothidea to both cell lines and of N. kwambonambiense to Vero cells increased with temperature, the opposite was found for the other species tested. Our results suggest that temperature modulates the expression of toxic compounds that, in a scenario of a global increase of temperature, may contribute to new plant infections but also human infections, especially in the case of B. dothidea.
Original languageEnglish
Pages (from-to)571-578
Number of pages8
JournalFungal Biology
Volume124
Issue number6
DOIs
Publication statusPublished - Jun 2020

Keywords

  • Chorophyll fluorescence imaging
  • Climate change
  • Human opportunistic pathogens
  • Phytopathogenic fungi

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