Mixotrophy in aquatic plants, an overlooked ability

Area of Science:

• Ecology
• Plant Science
• Biogeochemistry

Background:

• Aquatic embryophytes are crucial for aquatic ecosystem function, with carbon cycling being a key process.
• Mixotrophy, the ability of autotrophs to utilize exogenous organic carbon, is increasingly recognized as widespread in nature.
• Aquatic plants, despite abundant organic matter, have been largely overlooked regarding mixotrophic potential, often presumed to be strictly autotrophic.

Purpose of the Study:

• To investigate the potential for mixotrophy in aquatic plants (Embryophytes).
• To challenge the conventional paradigm of aquatic plants as exclusively autotrophic.
• To explore the potential widespread occurrence of mixotrophy in aquatic flora.

Main Methods:

• Literature review and synthesis of existing knowledge on aquatic plant physiology and carbon acquisition.
• Analysis of ecological conditions favoring mixotrophy in aquatic environments.
• Theoretical assessment of mixotrophic capabilities within aquatic embryophyte lineages.

Main Results:

• The study posits that aquatic embryophytes possess favorable predispositions for mixotrophy.
• Evidence suggests mixotrophy may be a recurrent evolutionary trait in aquatic plants.
• The conventional view of aquatic plants as strict autotrophs may be an oversimplification.

Conclusions:

• Mixotrophy is a plausible and potentially widespread phenomenon in aquatic embryophytes.
• Further research is warranted to empirically confirm and quantify mixotrophy in these plants.
• Recognizing mixotrophy in aquatic plants could significantly alter our understanding of aquatic ecosystem carbon dynamics.