Transcriptome analysis reveals the mechanism and key role of CdPER47 in bermudagrass (Cynodon dactylon) adaptation to submergence and post-submergence stresses.
Jia W, Hou S, Yang S, Zou Y, Dou W
Climate Adaptation
The bermudagrass in your local park or sports field can bounce back after heavy flooding partly because of genes like CdPER47 — and understanding this could help breeders develop flood-resistant turf and forage grasses that stay green after the next big storm.
Bermudagrass is unusually good at surviving underwater and recovering once the water recedes, but scientists didn't fully understand how. By studying which genes switch on and off during flooding, researchers found hundreds of active 'control switches' and pinpointed one gene — a peroxidase called CdPER47 — as especially important. When they put this gene into a lab plant (thale cress), those plants survived submergence much better, confirming the gene's protective role.
Key Findings
830 differentially expressed genes were identified as transcription factors during submergence and recovery, with 104 belonging to the AP2-EREBP family linked to ethylene stress responses
The peroxidase gene CdPER47 was strongly activated in bermudagrass roots under both submergence and post-submergence conditions, and overexpressing it in Arabidopsis significantly increased survival rates after flooding
42 metabolic pathways were significantly enriched in roots during submergence, including plant hormone signaling, sulfur metabolism, carbohydrate metabolism, and phenylpropanoid biosynthesis
chevron_right Technical Summary
Scientists identified a key gene (CdPER47) that helps bermudagrass survive flooding and recover afterward, revealing a complex defense system involving hundreds of genes and multiple metabolic pathways activated during submergence stress.
Abstract Preview
As an important turfgrass and forage grass, bermudagrass exhibits high tolerance to submergence stress, however, the molecular mechanisms are poorly clarified and required further elucidation. In t...
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Cynodon dactylon, commonly known as Bermuda grass or as couch grass in Australia and New Zealand, is a grass found worldwide. It is native to Europe, Africa, Australia, and much of Asia namely Nepal's hilly regions and has been introduced to the Americas.