Waterlogging-responsive Genes Revealed by Transcriptome Sequencing in Leaves of Two Crabapple Species with Contrasting Waterlogging Tolerance

Crabapples ( Malus sp.) are ornamental woody plants that belong to the Rosaceae family. Flooding has severely hampered growth and development of crabapple, little is known about molecular responses crabapple waterlogging tolerance. Cuttings waterlogging-tolerant hupehensis waterlogging-intolerant halliana received flooding treatment 30 days regular planting, respectively. Using transcriptome sequencing, we isolated 5703 2735 waterlogging-responsive genes from waterlogging-treated M. leaves. Among these differentially expressed (DEGs), only 746 were shared by both. Several variables may explain greater tolerance : there more response related carbohydrate energy metabolism; signal transduction; antioxidation; lipid protein amino acid polysaccharide, cell wall, cytoskeleton metabolism pathway in waterlogged leaves than halliana. In particular, number DEGs anaerobic metabolism, fatty phosphorylation dephosphorylation, γ -aminobutyric cellulase, pectinase flooded was The alterations gene expression patterns two species induced varied substantially. These outcomes pave way for further studies into functions be involved crabapples.