Woods Hole Oceanographic Institution (WHOI), the University of Connecticut, and Bigelow Laboratory for Ocean Sciences have executed a license agreement for a kelp germplasm, or collection of microscopic cells called gametophytes, containing more than 1,200 samples all developed and isolated by WHOI and UConn-led teams. Bigelow Laboratory's National Center for Marine Algae and Microbiota plans to maintain, market, and distribute the germplasm collection for broad use.
Expanding our marine macroalgae holdings is part of our strategic vision as the curators of the United States marine algae germplasm collection to increase support for global algae science. This agreement with UConn and WHOI provides a unique opportunity to diversify our collection and help harness algae's potential for remarkable scientific discoveries."
Michael Lomas, Director of the National Center for Marine Algae and Microbiota
Currently, macroalgae (seaweed) is primarily used as food for human consumption, but there is a growing opportunity for the production of macroalgae for other sustainable uses ranging from nutraceuticals, animal and aquafeeds to biofuels. This collection was collaboratively designed and tested for selective breeding that would increase productivity, reduce the cost of macroalgal farming, and improve the consistency and predictability of the germplasm "seed." It includes many of the samples' whole genome sequences and the traits associated with crosses between the males and female gametophytes. Gametophytes are the sexual phase in the life cycle of plants and these brown macroscopic macroalgae.
"Creating the kelp germplasm collection with associated gene sequences and an annotated reference genome is like having an instruction manual or an open-source road map for crop improvement," said Scott Lindell, WHOI research specialist and germplasm co-developer. "The data provided can assist in predicting the capabilities of how well a parent and its offspring will do for specific traits, such as growth rate and heat tolerance."
"This kelp culture collection will be essential for the preservation of heirloom strains, biodiversity conservation, ecosystem restoration and mariculture," said Charles Yarish, professor emeritus at UConn and visiting scholar at WHOI. Yarish co-authored a PLOS Biology paper and a UNU-CRIS paper that further investigate aquaculture and germplasm banking. "It contains genotype and phenotype profiles offering great starting points as model systems for numerous research possibilities, including optimization of biorefining pipelines, development of new macroalgal products and byproducts, and exploration of macroalgal applications for climate change mitigation."
The germplasm collection was supported by the ARPAe MARINER program (Macroalgae Research Inspiring Novel Energy Resources), which develops tools to enable the United States to become a global leader in the production of seaweed biomass.
The developed collection is also part of Sugar Kelp Base, an online database developed by cooperators at the United States Department of Agriculture and Cornell University, and designed for advanced methods in kelp breeding. Sugar kelp is a vital part of the Northern Hemisphere's ocean ecosystem; it aids in removing carbon dioxide and releasing oxygen, balances ocean acidification, and serves as a sustainable food source. Sugar Kelp Base tracks the performance of hundreds of family crosses for dozens of traits, covering the last four years of field trials funded by ARPAe and the World Wildlife Fund. The WHOI-UConn collection will enable others to participate and contribute to this open-source hub of phenotypic information.
"This is the age of genomics when having such data can enable predictive capabilities about how a parent and its offspring will perform for certain traits, further opening up more targeted breeding possibilities while preserving genetic diversity." said Lindell.