2008). These diverse metabolic capabilities are due, in part, to the diversity of strains found within the algal lineage. Algae strains grown for food purposes, such as Fer-1 Spirulina, have a starkly different metabolic profile from strains grown for energy, such as Scenedesmus. The diversity of their end products, and their cultivation using both agriculture and aquaculture practices make algae unique among other agricultural products.

Fig. 1 Algaculture in the U.S. Algaculture can take place in closed photobioreactors, like those of Algenol in Florida (a) and Solix Biosystems in Colorado (b), or in open ponds like those of Sapphire Energy, Inc. in New Mexico (c). Like agriculture, algae cultivation requires growth as well as harvesting infrastructure, such as that of Sapphire Energy Inc. Selleck TPCA-1 (d) Despite significant overlap with both traditional agriculture and aquaculture (which Congress has defined KU55933 in vitro as agriculture, including that of aquatic plants) (Food and Agriculture Act of 1977, 1977), algaculture has not yet been afforded an official position within Title 7 of the U.S. Code (USC) for Agriculture. There are currently a number of other crops that share commonalities with algae in their cultivation practices or diversity

of end-use markets, but these have all been designated a place within Title 7. For example, the commercial cultivation of aquatic plants, such as seagrass, is eligible for a diverse array of agricultural programs. Similarly, the farming

of terrestrial crops for renewable energy, which shares the same end market and purpose as many algal-farming operations, benefits from its definition as agriculture. Funding for research and development of algal biomass cultivation has increased over the last decade, and has led to the emergence of research programs, private projects, demonstration- and commercial-scale facilities across the U.S. (Fig. 2). The increase is primarily due to the growth of the algal biofuel industry in response to the demand for alternative fuel sources driven by the renewable fuel standards (RFS) Fluorouracil cost (Tyner 2013). While the use of algae as functional food or feed ingredients is also on the rise (Ibañez and Cifuentes 2013), there are currently few federal program resources focused in this area. The production of algae for any end product is a two-phase process involving the farming and cultivation of algal biomass followed by processing of the harvested biomass. The ability of the algal biomass industry to access federal programs that support the agricultural phase is imperative for future growth. This report analyzes the place of algae in the current agricultural policy and funding landscape, and the opportunities and pitfalls that exist for algae within this policy framework. Fig. 2 Algae projects in the U.S. Algal biomass projects exist in almost every state in the U.S.