Tomato yellow leaf curl virus infection mitigates the heat stress response of plants grown at high temperatures

Scientific Reports
Ghandi AnfokaRena Gorovits

Abstract

Cultured tomatoes are often exposed to a combination of extreme heat and infection with Tomato yellow leaf curl virus (TYLCV). This stress combination leads to intense disease symptoms and yield losses. The response of TYLCV-susceptible and resistant tomatoes to heat stress together with viral infection was compared. The plant heat-stress response was undermined in TYLCV infected plants. The decline correlated with the down-regulation of heat shock transcription factors (HSFs) HSFA2 and HSFB1, and consequently, of HSF-regulated genes Hsp17, Apx1, Apx2 and Hsp90. We proposed that the weakened heat stress response was due to the decreased capacity of HSFA2 to translocate into the nuclei of infected cells. All the six TYLCV proteins were able to interact with tomato HSFA2 in vitro, moreover, coat protein developed complexes with HSFA2 in nuclei. Capturing of HSFA2 by viral proteins could suppress the transcriptional activation of heat stress response genes. Application of both heat and TYLCV stresses was accompanied by the development of intracellular large protein aggregates containing TYLCV proteins and DNA. The maintenance of cellular chaperones in the aggregated state, even after recovery from heat stress, prevents the circula...Continue Reading

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Citations

Apr 4, 2017·The Plant Journal : for Cell and Molecular Biology·Haina Zhang, Uwe Sonnewald
Nov 15, 2018·Frontiers in Microbiology·Svetlana MakarovaMichael Taliansky
May 2, 2018·Frontiers in Plant Science·Nobuhiro Suzuki, Kazuma Katano
Jul 11, 2020·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Charfeddine GharsallahFaten Gorsane
Nov 5, 2020·Molecular Plant Pathology·Igor FesenkoMichael Taliansky
Jun 8, 2021·Frontiers in Microbiology·Mark Paul Selda RivarezDenis Kutnjak
Sep 6, 2021·The Plant Journal : for Cell and Molecular Biology·Rosa M RiveroSara I Zandalinas
May 30, 2021·Plant Cell Reports·Adeeb RahmanNeeti Sanan-Mishra
Jan 1, 2022·Molecular Plant Pathology·Ritesh MishraRena Gorovits

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Methods Mentioned

BETA
transgenic
electrophoresis
reverse transcription PCR
nuclear translocation
environmental stresses

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