Identification of ‘articuliths’ in a unique algal bed formation from Brazil and description of<i>Jania cabista sp. nov</i>. (Corallinales, Rhodophyta)

Tâmega, Frederico Tapajós de Souza; Torrano-Silva, Beatriz N.; Oliveira, Mariana Cabral de; Spotorno-Oliveira, Paula; Calazans, Sávio H.; Rosas-Alquicira, Edgar; Coutinho, Ricardo; Peña, Viviana

doi:10.1080/00318884.2021.1916279

Cited by 2 publications

(2 citation statements)

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“…The intertidal rocky shore habitat is susceptible to daily stress with variations in irradiance, temperature, desiccation, and water movement ( Fields et al, 1993 ; Helmuth, 1999 ; Helmuth, 2002 ; Massa et al, 2009 ). On the other hand, the articulith beds at Saco do Cherne (15–18 m depths) show a more stable habitat with fewer environmental changes ( Tâmega et al, 2021 ). Deepa, Srikumar & Padmakumar, 2014 also showed the inhibitory activity of the ethanolic extract of A. anceps against marine bacteria of the genus Vibrio .…”

Section: Discussionmentioning

confidence: 99%

“…1 ) in the summer of 2018. Study sites included Fenda de Nossa Senhora, Prainha, Praia do Forno, Saco do Cherne (with a rocky shore and articulith beds, Tâmega et al, 2017 ; Tâmega et al, 2021 ), Praia dos Anjos, Saco dos Ingleses, and Praia Grande. A total of nine samples were collected, five of A. beauvoisii , two of J. crassa , one of J. sagittata , and one of J. prolifera .…”

Section: Methodsmentioning

confidence: 99%

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Chemical diversity and antifouling activity of geniculate calcareous algae (Corallinales, Rhodophyta) from Brazil

Oliveira

Araújo

et al. 2023

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Marine biofouling is a natural process by which many organisms colonize and grow in submerged structures, causing serious economic consequences for the maritime industry. Geniculate calcareous algae (GCA; Corallinales, Rhodophyta) produce bioactive secondary metabolites and are a promise for new antifouling compounds. Here, we investigated the antifouling activity of four GCA species—Amphiroa beauvoisii, Jania sagittata (formerly Cheilosporum sagittatum), Jania crassa, and Jania prolifera (formerly Amphiroa flabellata)—from the Brazilian coast against macro- and microorganisms. Simultaneously, metabolomic tools were applied to assess the chemical profiles of these seaweeds using gas chromatography coupled to mass spectrometry (GC-MS). Data analysis by principal component and molecular networking analyses used the global natural products social molecular networking platform (GNPS). Our results showed that all extracts were active against different strains of marine bacteria and that the J. sagittata (JsSI) extract showed the highest percentage of bacterial inhibition. The J. sagittata (JsSI) extract was the most active against the mussel Perna perna, showing 100% byssus inhibition. Regarding toxicity, only the J. crassa (JcP) extract showed a 20% mortality rate. The chemical profiles of the evaluated GCA extracts differed qualitatively and quantitatively. Yet, the steroid (3β)-cholest-5-en-3-ol was the major compound commonly identified in all extracts, with the exception of J. sagittata (JsSI). Moreover, we observed intra- and interspecific chemical variabilities among GCA extracts for the different populations, which could explain their antifouling activity variability. This study contributed new information about the chemical compounds produced by this group of seaweeds and showed its antifouling potential. These GCA species may be the subject of future studies to obtain new bioactive compounds with biotechnological potential in maritime areas.

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