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

0497366 - ÚEB 2019 RIV CZ eng J - Journal Article
Nožková, V. - Mieslerová, B. - Luhová, L. - Piterková, J. - Novák, Ondřej - Špundová, M. - Lebeda, A.
Effect of heat-shock pre-treatment on tomato plants infected by powdery mildew fungus.
Plant Protection Science. Roč. 55, č. 1 (2019), s. 31-42. ISSN 1212-2580. E-ISSN 1805-9341
R&D Projects: GA MŠMT(CZ) LO1204
Institutional support: RVO:61389030
Keywords : oidium-neolycopersici infection * high-temperature stress * f-sp hordei * salicylic-acid * abscisic-acid * pathogen interactions * hypersensitive response * pseudomonas-syringae * microbe interactions * jasmonic acid * abscisic acid * jasmonic acid * peroxidase * Pseudoidium neolycopersici * salicylic acid * Solanum spp.
OECD category: Plant sciences, botany
Impact factor: 1.130, year: 2019

The effect of plant heat-shock (HS) pre-treatment (40.5 degrees 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.
Permanent Link: http://hdl.handle.net/11104/0289944