Defense responses in plants of Eucalyptus elicited by Streptomyces and challenged with Botrytis cinerea

Planta
Tamiris Daros SallaEliane Romanato Santarém

Abstract

Elicitation of E. grandis plants with Streptomyces PM9 reduced the gray-mold disease, through increasing the levels of enzymes directly related to the induction of plant defense responses, and accumulation of specific phenolic compounds. Members of Eucalyptus are economically important woody species, especially as a raw material in many industrial sectors. Species of this genus are susceptible to pathogens such as Botrytis cinerea (gray mold). Biological control of plant diseases using rhizobacteria is one alternative to reduce the use of pesticides and pathogen attack. This study evaluated the metabolic and phenotypic responses of Eucalyptus grandis and E. globulus plants treated with Streptomyces sp. PM9 and challenged with the pathogenic fungus B. cinerea. Metabolic responses were evaluated by assessing the activities of the enzymes polyphenol oxidase and peroxidase as well as the levels of phenolic compounds and flavonoids. The incidence and progression of the fungal disease in PM9-treated plants and challenged with B. cinerea were evaluated. Treatment with Streptomyces sp. PM9 and challenge with B. cinerea led to changes in the activities of polyphenol oxidase and peroxidase as well as in the levels of phenolic compounds i...Continue Reading

References

Mar 21, 2001·FEBS Letters·M ZámockýC Obinger
Mar 12, 2004·Annual Review of Phytopathology·L C van LoonC M Pieterse
Apr 18, 2006·Trends in Plant Science·Jan A L van Kan
Jan 11, 2008·Molecular Plant-microbe Interactions : MPMI·V M ConnC M M Franco
Apr 18, 2008·Antonie van Leeuwenhoek·Silvia D Schrey, Mika T Tarkka
Apr 5, 2012·Molecular Plant Pathology·Ralph DeanGary D Foster
Oct 5, 2013·Applied Microbiology and Biotechnology·Sasikumar Arunachalam PalaniyandiJoo-Won Suh
Jun 12, 2014·Nature·Alexander A MyburgJeremy Schmutz
Nov 15, 2014·Plant Physiology and Biochemistry : PPB·Tamiris Daros SallaEliane Romanato Santarém

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Citations

Jun 13, 2020·Brazilian Journal of Microbiology : [publication of the Brazilian Society for Microbiology]·Juliana Lopes HorstmannEliane Romanato Santarém
Nov 25, 2020·Phytochemistry·Jin Zhang, Xiaoling Sun

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