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.

中文翻译：

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海洋底栖丝状蓝藻Adonisia的经济基因组学。

草坪是全球珊瑚礁系统主要的底栖生物之一。研究了从巴西阿波罗河银行的草坪组合中分离出的两种富含藻胆蛋白的丝状蓝细菌菌株的近乎完整的基因组序列，基本生理特征和种系重建。黑头草CCMR0081T（= CBAS 745T）和CCMR0082的基因组大小均约为8 Mbp，实验确定这两种菌株均具有色适应性。CCMR0081T表现出同时调节藻蓝蛋白（PC）和藻红蛋白（PE）的色适应性3（CA3），而CCMR0082菌株展示了2的色适应性（CA2），与编码PC和PE的特定光电传感器和调节剂的基因相对应。此外，在两个基因组中均鉴定出大量次级代谢产物合成基因簇，并且它们能够在高温（28°C，在30°C很少生长）下生长。这些特征为它们在珊瑚礁系统中的广泛分布提供了见识。