Intermittent Changes in Temperature and Humidity Repress Gray Mold in Tomato

Environmental temperature and humidity play a vital role in plant-pathogen interactions, which profoundly affect the occurrence of crop diseases. However, the specific methods and mechanisms through which intermittent changes in temperature and humidity mitigate plant diseases remain unclear. In thi...

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Veröffentlicht in:Plant disease 2023-02, Vol.107 (2), p.306-314
Hauptverfasser: Li, Tianzhu, Zhou, Jie, Yuan, Zenan, Liu, RuYi, Li, Jianming
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container_issue 2
container_start_page 306
container_title Plant disease
container_volume 107
creator Li, Tianzhu
Zhou, Jie
Yuan, Zenan
Liu, RuYi
Li, Jianming
description Environmental temperature and humidity play a vital role in plant-pathogen interactions, which profoundly affect the occurrence of crop diseases. However, the specific methods and mechanisms through which intermittent changes in temperature and humidity mitigate plant diseases remain unclear. In this study, six temperature and humidity combinations were set, the disease severity of tomatoes and biomass of were analyzed, and the infection process of pathogens was observed using an optical microscope. Furthermore, dual RNA-seq analysis was performed to explore the interactions between plants and pathogens. Results showed that the 24 hours postinoculation (hpi)-12 h day (regulation was performed at 24 hpi for 12 h after inoculation during the day) treatment reduced the gray mold severity and biomass of in plants by the greatest amount and effectively inhibited the growth of mycelia. The 24 hpi-12 h day treatment induced the upregulation of light reactions, photorespiration, and Calvin cycle-related genes in tomatoes, whereas fungal genes related to the biosynthesis of sesquiterpene botrydial and polyketide botcinic acid were downregulated. Overall, we identified the optimal combination of temperature and humidity changes to inhibit the development of tomato gray mold and preliminarily explored the interactions between tomato and under temperature and humidity changes. This work has practical importance and provides a theoretical basis for the ecological control of plant diseases.
doi_str_mv 10.1094/PDIS-03-22-0607-RE
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source MEDLINE; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection; American Phytopathological Society Journal Back Issues
subjects Humidity
Solanum lycopersicum - genetics
Temperature
Up-Regulation
title Intermittent Changes in Temperature and Humidity Repress Gray Mold in Tomato
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