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Title: Cyanobacteria newly isolated from marine volcanic seeps display rapid sinking and robust, high-density growth

Journal Article · · Applied and Environmental Microbiology
ORCiD logo [1];  [2];  [2];  [3];  [4];  [5];  [6];  [6];  [7];  [7];  [8];  [9];  [7];  [6];  [10];  [2];  [11];  [12]; ORCiD logo [3];  [13] more »; ORCiD logo [9]; ORCiD logo [3] « less
  1. Two Frontiers Project, Fort Collins, CO (United States); Harvard Univ., Boston, MA (United States). Wyss Inst. For Biologically Inspired Engineering
  2. Harvard Univ., Boston, MA (United States). Wyss Inst. For Biologically Inspired Engineering
  3. Two Frontiers Project, Fort Collins, CO (United States); Cornell Univ., New York, NY (United States). Weill Medical College
  4. Two Frontiers Project, Fort Collins, CO (United States); Colorado State Univ., Fort Collins, CO (United States)
  5. Two Frontiers Project, Fort Collins, CO (United States); Univ. of Wisconsin, Madison, WI (United States)
  6. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  7. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
  8. Two Frontiers Project, Fort Collins, CO (United States); Lungomare Cristoforo Colombo, Palermo (Italy); National Biodiversity Future Center, Palermo (Italy)
  9. Two Frontiers Project, Fort Collins, CO (United States); National Biodiversity Future Center, Palermo (Italy); University of Palermo (Italy)
  10. Two Frontiers Project, Fort Collins, CO (United States)
  11. Two Frontiers Project, Fort Collins, CO (United States); Seed Health, Venice, CA (United States)
  12. Two Frontiers Project, Fort Collins, CO (United States); University of Palermo (Italy)
  13. Two Frontiers Project, Fort Collins, CO (United States); Harvard Univ., Boston, MA (United States). Wyss Inst. For Biologically Inspired Engineering; Harvard Medical School, Boston, MA (United States)

Cyanobacteria are photosynthetic organisms that play important roles in carbon cycling and are promising bioproduction chassis. Here, we isolate two novel cyanobacteria with 4.6Mbp genomes, UTEX 3221 and UTEX 3222, from a unique marine environment with naturally elevated CO2. We describe complete genome sequences for both isolates and, focusing on UTEX 3222 due to its planktonic growth in liquid, characterize biotechnologically relevant growth and biomass characteristics. UTEX 3222 outpaces other fast-growing model strains on a solid medium. It can double every 2.35 hours in a liquid medium and grows to high density (>31 g/L biomass dry weight) in batch culture, nearly double that of Synechococcus sp. PCC 11901, whose high-density growth was recently reported. In addition, UTEX 3222 sinks readily, settling more quickly than other fast-growing strains, suggesting favorable economics of harvesting UTEX 3222 biomass. These traits may make UTEX 3222 a compelling choice for marine carbon dioxide removal (CDR) and photosynthetic bioproduction from CO2. Overall, we find that bio-prospecting in environments with naturally elevated CO2 may uncover novel CO₂-metabolizing organisms with unique characteristics.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE; National Science Foundation (NSF)
Grant/Contract Number:
AC36-08GO28308; FG02-02ER63445
OSTI ID:
2481286
Report Number(s):
NREL/JA--2800-92438; MainId:94219; UUID:a0b4a4cc-c8a0-4015-b8b5-d39a86e629dd; MainAdminId:75498
Journal Information:
Applied and Environmental Microbiology, Journal Name: Applied and Environmental Microbiology Journal Issue: 11 Vol. 90; ISSN 0099-2240
Publisher:
American Society for MicrobiologyCopyright Statement
Country of Publication:
United States
Language:
English

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