Journal
PLANT PHYSIOLOGY AND BIOCHEMISTRY
Volume 171, Issue -, Pages 157-168Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.plaphy.2021.12.035
Keywords
Counteraction; Energy metabolism; Induced disease resistance; Methyl jasmonate; Peach fruit; WRKY transcription Factor
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Funding
- National Natural Science Foundation of China [32172644, 31672209]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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This study investigated the role of WRKYs in MeJA-primed disease resistance and energy metabolism. Results showed that PpWRKY46 and PpWRKY53 were regulated by MeJA treatment and affected energy metabolism-related enzyme activities, gene expression, and energy status. PpWRKY46 interacted with PpWRKY53 and regulated the transcription of energy metabolism-related genes. These findings suggest that the counteraction of PpWRKY46 and PpWRKY53 plays a role in MeJA-primed defense through the regulation of energy metabolism in peaches.
Induced resistance is a promising strategy to manage plant disease, while adequate energy supply is crucial to plant defense. Our previous study has revealed that PpWRKY45 and PpWRKY70 are involved in MeJA-primed disease resistance by regulating jasmonate acid biosynthesis and phenylpropanoid metabolism. Herein, the possible role of WRKYs in MeJA-primed disease resistance and energy metabolism was investigated. PpWRKY46 and PpWRKY53 were up-and down-regulated, respectively, by MeJA treatment. The activities and gene expression of energy metabolism-related enzymes and energy status were promoted by MeJA treatment and R. stolonifer inoculation during 60 h storage at 20 degrees C. Energy metabolism-related genes, including PpSDH and PpCOX15 were transactivated by PpWRKY46, but repressed by PpWRKY53. Furthermore, PpWRKY46 interacted with PpWRKY53 to attenuate the transcriptional repression of PpWRKY53 to PpSDH and PpCOX15. Taken together, our results demonstrated that the counteraction of PpWRKY46 and PpWRKY53 contributes to MeJAprimed defense by regulating energy metabolism in peaches.
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