Data/hora: 01/06/2024 16:15:41

Provedor de dados: 	39	
País: 	Brazil	
Título: 	Hypnea musciformis (Wulfen) J. V. Lamour. (Gigartinales, Rhodophyta) responses to gasoline short-term exposure: biochemical and cellular alterations	
Autores: 	Ramlov,Fernanda; Carvalho,Tiago Jose Griebeler; Costa,Giulia Burle; Rodrigues,Eva Regina de Oliveira; Bauer,Claudia Marlene; Schmidt,Eder Carlos; Kreusch,Marianne Gabi; Moresco,Rodolfo; Navarro,Bruno Bachiega; Cabral,Debora Queiroz; Bouzon,Zenilda Laurita; Horta,Paulo Antunes; Maraschin,Marcelo.	
Data: 	2019-03-01	
Ano: 	2019	
Palavras-chave: 	Biochemical stress; Cellular organization; Gasoline pollution; Hypnea musciformis; Physiology.	
Resumo: 	ABSTRACT Presence of toxic compounds in marine coastal waters has increased exponentially since Industrial Revolution. In this way, we aimed to evaluate biochemical and physiological changes occurring within Hypnea musciformis after short-term exposure to gasoline. Hypnea musciformis was cultivated without gasoline and then exposed to various concentrations of it (0.001 % - 1.0 %, v/v) for periods of 30 min, 1 h, 12 h and 24 h. A Pricncipal Compound Analysis of UV-vis spectral window (200-700 nm) was able to discriminate gasoline-exposed samples according to both exposure time and gasoline concentration. Changes in carotenoid profile composition were observed. Decreased carotenoid content was associated to gasoline exposure time, being lutein and trans-β-carotene the major compounds found. Higher gasoline concentrations negatively interfered with phenolic compounds accumulation. In addition, increased gasoline concentrations corresponded to decreased intracellular starch grains content as well as increased its deposition on cell wall external surface. Data obtained allow us to conclude that gasoline can damage Hypnea musciformis physiology and cell morphology. This is important, considering Hypnea musciformis carotenoids and phenolics are potential biomarkers of environmental stress investigated, as well as its increased cell wall thickness to avoid gasoline diffusion.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000100116	
Editor: 	Sociedade Botânica do Brasil	
Relação: 	10.1590/0102-33062018abb0379	
Formato: 	text/html	
Fonte: 	Acta Botanica Brasilica  v.33 n.1 2019	
Fonte: 	info:eu-repo/semantics/openAccess