The global wheat gene expressional responses to fusaoctaxin A

Purpose: To assess global changes of wheat coleoptiles gene expression in response to fusaoctaxin A which is a linear, C-terminally-reduced and D-amino acid residue-rich octapeptide, as the product of the two non-ribosomal peptide synthetases encoded by Fusarium graminearum fg3_54 cluster. Methods: For RNA seq of wheat coleoptiles, three biological replicates of mock-inoculated coleoptiles, wild-type PH-1 inoculated coleoptiles (3 dpi), ∆fg3_54 inoculated coleoptiles (3 dpi), after 3 hours fusaoctaxin A-treated coleoptiles, after 3 hours control (0.5% Tween-20) treated coleoptiles, after 24 hours fusaoctaxin A-treated coleoptiles and after 24 hours control (0.5% Tween-20) treated coleoptiles were sequenced. Results: For each sample, 33-95 M RNA-seq clean reads were obtained mapped to the Triticum aestivum Chinesespring genome sequence.Our results of RNA sequencing indicated fusaoctaxin does not induce PR gene expression, but suppress plant immunity and chloroplastc activity. Conclusions: Fusaoctaxin A represents an unprecedented virulence factor which can manipulate chloroplast and suppress host immunity. Three biological replicates of mock-inoculated coleoptiles, wild-type PH-1 inoculated coleoptiles (3 dpi), ∆fg3_54 inoculated coleoptiles (3 dpi), after 3 hours fusaoctaxin A-treated coleoptiles, after 3 hours control (0.5% Tween-20) treated coleoptiles, after 24 hours fusaoctaxin A-treated coleoptiles and after 24 hours control (0.5% Tween-20) treated coleoptiles were sequenced using Illumina NovaSeq 6000 Sequencing System.