What is Klamath Lake AFA?
Klamath Lake AFA, also known as Klamath AFA, is a cyanobacterial biomass harvested from Upper Klamath Lake in Oregon. It has been used in dietary supplements since the 1980s. The primary strain of Aphanizomenon flos-aquae, the cyanobacterial species in question, is MDT14a.
Background on Cyanobacteria
Cyanobacteria are a group of microorganisms that are capable of photosynthesis, just like plants. They are found in water bodies around the world and are known to produce a range of compounds, including toxins and nutrients. In the case of Aphanizomenon flos-aquae, it is notable for growing prolifically in Upper Klamath Lake, making it a significant component of the lake's ecosystem.
History of Harvesting
Aphanizomenon flos-aquae has been harvested from Upper Klamath Lake since the 1980s for use in dietary supplements. The harvesting process involves collecting the biomass from the lake, typically during the summer months when the growth is most abundant.
Genome Sequencing and Diversity
Historically, Aphanizomenon flos-aquae was treated as a single homogeneous species. However, recent genome sequencing has revealed significant diversity within the group, with some subgroups more appropriately categorized as distinct species. In fact, the primary strain MDT14a has been found to belong to the same genomic species as strain LD13 (MDT13), also isolated from Upper Klamath Lake, at 99.29% Average Nucleotide Identity (ANI).
Why it Matters
The harvesting of Aphanizomenon flos-aquae from Upper Klamath Lake has raised concerns about the impact on the lake's ecosystem. The lake is already under stress due to factors such as nutrient pollution, invasive species, and climate change. The harvesting process can further stress the lake's ecosystem, particularly if not done sustainably.
Impact on Human Health
There is limited research on the potential health effects of consuming Aphanizomenon flos-aquae. However, it is essential to note that the quality and safety of the biomass can vary depending on factors such as harvesting and processing methods. Some studies have suggested potential health benefits, but more research is needed to confirm these findings.
FAQ
What is Klamath Lake AFA? Aphanizomenon flos-aquae harvested from Upper Klamath Lake in Oregon, or simply Klamath Lake AFA or Klamath AFA, is a cyanobacterial biomass used in dietary supplements.
How is Klamath Lake AFA harvested? The biomass is collected from Upper Klamath Lake during the summer months when the growth is most abundant.
What is the primary strain of Aphanizomenon flos-aquae? The primary strain is MDT14a.
How does the harvesting of Klamath Lake AFA impact the lake's ecosystem? The harvesting process can further stress the lake's ecosystem, particularly if not done sustainably.
What is the average nucleotide identity of MDT14a compared to LD13 (MDT13)? The average nucleotide identity is 99.29%.