Ecogenomics of the Marine Benthic Filamentous Cyanobacterium Adonisia.
Microb Ecol, 2020/8;80(2):249-265.
Walter JM[1, 2], Coutinho FH[1, 2], Leomil L[1], Hargreaves PI[1], Campeão ME[1], Vieira VV[3], Silva BS[4], Fistarol GO[4], Salomon PS[4], Sawabe T[5], Mino S[5], Hosokawa M[5], Miyashita H[6], Maruyama F[6], van Verk MC[7], Dutilh BE[2, 8], Thompson CC[1], Thompson FL[9, 10]
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PMID: 32060621DOI: 10.1007/s00248-019-01480-x
Impact factor: 4.192
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 CCMR0081T (= CBAS 745T) and CCMR0082 contain approximately 8 Mbp in genome size and experiments identified that both strains exhibit chromatic acclimation. Whereas CCMR0081T 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.
Keywords: Abrolhos Bank; Coral reefs; Cyanobacteria; Microbial ecology; Photoacclimation strategies; Secondary metabolites; Turf
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