AI Article Synopsis
- The study explores two strains of filamentous cyanobacteria from turf ecosystems in the Abrolhos Bank, Brazil, highlighting their complete genome sequences and physiological traits.
- The strains, Adonisia turfae CCMR0081 and CCMR0082, have genome sizes around 8 Mbp and show distinct types of chromatic acclimation, correlating with their photosynthetic pigment regulation.
- Both strains possess a rich variety of gene clusters for secondary metabolite production and can thrive in warmer temperatures, shedding light on their ecological roles in reef systems.
Article Abstract
Turfs are among the major benthic components of reef systems worldwide. The nearly complete genome sequences, basic physiological characteristics, and phylogenomic reconstruction of two phycobiliprotein-rich filamentous cyanobacteria strains isolated from turf assemblages from the Abrolhos Bank (Brazil) are investigated. Both Adonisia turfae CCMR0081 (= CBAS 745) and CCMR0082 contain approximately 8 Mbp in genome size and experiments identified that both strains exhibit chromatic acclimation. Whereas CCMR0081 exhibits chromatic acclimation type 3 (CA3) regulating both phycocyanin (PC) and phycoerythrin (PE), CCMR0082 strain exhibits chromatic acclimation type 2 (CA2), in correspondence with genes encoding specific photosensors and regulators for PC and PE. Furthermore, a high number and diversity of secondary metabolite synthesis gene clusters were identified in both genomes, and they were able to grow at high temperatures (28 °C, with scant growth at 30 °C). These characteristics provide insights into their widespread distribution in reef systems.
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| http://dx.doi.org/10.1007/s00248-019-01480-x | DOI Listing |
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