Epigenetic regulation of the expression of WRKY75 transcription factor in response to biotic and abiotic stresses in Solanaceae plants

Plant Cell Reports
María José López-GalianoInmaculada García-Robles

Abstract

SlyWRKY75: gene expression was induced in response to biotic stresses, especially in Botrytis cinerea-infected tomato plants, in which Sly-miR1127-3p is a putative SlyWRKY75 regulator and epigenetic marks were detected. WRKY75 transcription factor involved in Pi homeostasis was recently found also induced in defense against necrotrophic pathogens. In this study, we analyzed by RT-qPCR the expression of SlyWRKY75 gene in tomato plants in response to abiotic stresses (drought or heat) and biotic stresses (Colorado potato beetle larvae infestation, Pseudomonas syringae or Botrytis cinerea infection) being only differentially expressed following biotic stresses, especially upon B. cinerea infection (55-fold induction). JA and JA-Ile levels were significantly increased in tomato plants under biotic stresses compared with control plants, indicating that SlyWRKY75 might be a transcriptional regulator of the JA pathway. The contribution of miRNAs and epigenetic molecular mechanisms to the regulation of this gene in B. cinerea-infected tomato plants was explored. We identified a putative Sly-miR1127-3p miRNA predicted to bind the intronic region of the SlyWRKY75 genomic sequence. Sly-miR1127-3p miRNA was repressed in infected plants (0....Continue Reading

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Citations

Jul 5, 2019·Plants·María José López-GalianoCarolina Rausell
Jan 30, 2021·Frontiers in Plant Science·Sneha Lata BhadouriyaRajesh Mehrotra
Oct 12, 2021·Horticulture Research·Yingjun HouShenchun Qu

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Methods Mentioned

BETA
histone
ubiquitination
immunoprecipitation
PCR
ChIP

Software Mentioned

Statgraphics
psRNATarget
[UNK]
plus
RNAfold
Primer Express

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