Elucidating the morpho-physiological adaptations and molecular responses under long-term waterlogging stress in maize through gene expression analysis

摘要: Abstract Waterlogging stress in maize is one of the emerging abiotic stresses current climate change scenario. To gain insights transcriptional reprogramming during late hours waterlogging under field conditions, we aimed to elucidate and anatomical changes two contrasting inbreds viz. I110 (susceptible) I172 (tolerant). reduced dry matter translocations from leaves stems ears, resulting a lack sink capacity inadequate grain filling I110, thus decreased yield drastically. The development aerenchyma cells within 48 hours enabled hypoxia tolerance. upregulation alanine aminotransferase, ubiquitin activating enzyme E1, putative mitogen activated protein kinase pyruvate suggested that genes involved degradation, signal transduction carbon metabolism provided adaptive mechanisms waterlogging. Overexpression alcohol dehydrogenase, sucrose synthase, aspartate NADP dependent malic many miRNA targets indicated more oxygen energy consumption might have shortened plant survival long-term exposure. best our knowledge, this first report transcript profiling at stage (24-96 hours) conditions provides new visions understand molecular basis tolerance maize.