Plant Defenses Against Pests Driven by a Bidirectional Promoter

Frontiers in Plant Science
Ana ArnaizM Estrella Santamaria

Abstract

The plant defense responses to pests results in the synchronized change of a complex network of interconnected genes and signaling pathways. An essential part of this process is mediated by the binding of transcription factors to the specific responsive cis-elements within in the promoters of phytophagous-responsive genes. In this work, it is reported the identification and characterization of a bidirectional promoter that simultaneously co-regulate two divergent genes, At5g10300 and At5g10290, upon arthropod feeding. Computational analysis identified the presence of cis-elements within the intergenic region between two loci, mainly from the DOF but also from the AP2/ERF, Golden 2-like and bHLH families. The function of the bidirectional promoter was analyzed using two enhanced variants of the GFP and CherryFP reporter genes, in both orientations, in transient tobacco and stably transformed Arabidopsis plants. Promoter activity was tested in response to feeding of Tetranychus urticae and Pieris brassicae, as well as wounding, flagellin and chitin treatments. Using RT-qPCR assays and confocal microscopy, it was shown that all treatments resulted in the induction of both reporter genes. Furthermore, our findings revealed the asym...Continue Reading

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Citations

Aug 13, 2020·Molecular Plant-microbe Interactions : MPMI·Solhee InDoil Choi
Apr 11, 2020·Plants·M Estrella SantamariaIsabel Diaz

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Methods Mentioned

BETA
Fluorescence
transgenic
confocal microscopy
PCR

Software Mentioned

GraphPadPrismv6
zPicture
Adobe Photoshop
- Point
SeaView4
VISTA
SPSSv25
MUSCLE
PlantRegMap
LightCycler480

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