Effect of heat-shock pre-treatment on tomato plants infected by powdery mildew fungus

Vladimíra Nožková, Barbora Mieslerová, Lenka Luhová, Jana Piterková, Ondřej Novák, Martina Špundová and Aleš Lebeda
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Vladimíra Nožková: Department of Biophysics, Faculty of Science, Palacký University, Olomouc, Czech Republic
Barbora Mieslerová: Department of Botany, Faculty of Science, Palacký University, Olomouc, Czech Republic
Lenka Luhová: Department of Biochemistry, Faculty of Science, Palacký University, Olomouc, Czech Republic
Jana Piterková: Department of Biochemistry, Faculty of Science, Palacký University, Olomouc, Czech Republic
Ondřej Novák: Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research
Martina Špundová: Department of Biophysics, Faculty of Science, Palacký University, Olomouc, Czech Republic
Aleš Lebeda: Department of Botany, Faculty of Science, Palacký University, Olomouc, Czech Republic

Plant Protection Science, 2019, vol. 55, issue 1, 31-42

Abstract: The effect of plant heat-shock (HS) pre-treatment (40.5°C, 2 h) on Pseudoidium neolycopersici development in the susceptible and moderately resistant Solanum spp. genotypes was studied together with biochemical responses (endogenous concentrations of salicylic (SA), jasmonic (JA), abscisic acid (ABA), and peroxidase (POX) activity). In HS pre-treated S. lycopersicum, an acceleration of pathogen, chlorosis and necrosis development, strong SA, JA accumulation, and increased POX activity were detected. In S. chmielewskii, HS pre-treatment caused a slight suppression of pathogen development, increase in JA, ABA concentrations, and POX activity. HS accelerated and strengthened the development of symptoms and biochemical responses to the infection in the susceptible genotype in contrast to moderately resistant genotype with a robust defence response to an infection per se.

Keywords: abscisic acid; jasmonic acid; peroxidase; Pseudoidium neolycopersici; salicylic acid; Solanum spp (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:55:y:2019:i:1:id:24-2018-pps

DOI: 10.17221/24/2018-PPS

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