Venus flytrap microbiotas withstand harsh conditions during prey digestion

Area of Science:

• Plant biology
• Microbiology
• Ecology

Background:

• The Venus flytrap (Dionaea muscipula) is a carnivorous plant that captures prey to overcome nutrient limitations.
• Digestion occurs within the trap using acidic mucilage, but the role of associated microorganisms is poorly understood.

Purpose of the Study:

• To investigate the microbial communities within Venus flytrap traps and petioles.
• To understand how these microbiotas change during prey digestion and in response to environmental stimuli.

Main Methods:

• 16S amplicon meta-barcoding was used to analyze trap and petiole microbiotas.
• Time-series assessments were conducted during digestion.
• Experimental acidification of petioles was performed.

Main Results:

• Trap and petiole microbiotas were distinct.
• Microbial communities in traps shifted significantly during digestion, influenced by prey bacteria, but recovered post-digestion.
• Artificial acidification did not induce trap-like communities in petioles.

Conclusions:

• Venus flytrap traps harbor distinct and resilient microbial communities.
• These trap-specific microbiotas are maintained during digestion and recover from disturbances.
• Further research is needed to elucidate the functional roles and host benefits of these microbial associations.