Pla¢ncton de passagem de gás ilumina outra pea§a do quebra-cabea§a do ciclo do carbono
A pesquisa liderada pela microbiologista do estado de Oregon Kimberly Halsey e então Ph.D. da OSU. o aluno Eric Moore revelou não apenas que a bactanãria consome acetona, mas também outro composto orga¢nico vola¡til, o isopreno.
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)
Crédito: Luis Bolaa±os, OSU
A forma de vida mais abundante do oceano, um tipo de bactanãria descoberta pela Oregon State University, consome um composto orga¢nico comumente encontrado em solventes como removedor de tinta, mostra um novo estudo da OSU.
Descobrir que a bactanãria SAR11 usa acetona acrescenta evidaªncias que sugerem que aspectos do ciclo do carbono marinho, que puxa o carbono atmosfanãrico para o mar, não estãosendo considerados no estudo do ciclo e sua capacidade de amortecer asmudanças climáticas, dizem os cientistas.
A pesquisa liderada pela microbiologista do estado de Oregon Kimberly Halsey e então Ph.D. da OSU. o aluno Eric Moore revelou não apenas que a bactanãria consome acetona, mas também outro composto orga¢nico vola¡til, o isopreno.
O isopreno, expresso quimicamente como C5H8 e o principal componente da borracha natural, éum produto gasoso do metabolismo vegetal. O isopreno e a acetona (C3H6O) são produzidos pelo fitopla¢ncton, algas marinhas microsca³picas, e são abundantes nasuperfÍcie do oceano, de onde esses gases podem se mover para a atmosfera e influenciar o clima.
"O isopreno éfrequentemente associado a famosa nanãvoa das montanhas Blue Ridge", disse Halsey, bolsista de Excelaªncia em Microbiologia da Faculdade de Ciências da OSU. "Como a acetona éproduzida biologicamente não bem compreendida, mas tanto o isopreno quanto a acetona interessam aos cientistas atmosfanãricos porque, se escaparem dasuperfÍcie do oceano, podem reagir quimicamente com outros compostos na atmosfera, potencialmente formandopartículas de aerossol que podem precipitar chuva, gelo e neve formação."
SAR11, descoberto em 1990 por Stephen Giovannoni do Estado do Oregon, éa menor canãlula de vida livre conhecida e também tem o menor genoma de qualquer canãlula independente. Mas as bactanãrias prosperam onde a maioria das outras células morreria - o peso combinado do SAR11 excede o de todos os peixes do oceano - e, por meio de seus números, desempenham um papel importante no ciclo do carbono.
Um aºnico mililitro de águado oceano pode conter meio milha£o de células SAR11, disse Giovannoni, distinto professor de microbiologia, e 25% de todo o pla¢ncton ocea¢nico são SAR11.
"O fato de as células SAR11 poderem usar isopreno acrescenta peso adicional a uma nova teoria de que algumas células do pla¢ncton se especializam em moléculas de peso molecular muito baixo - muito leves - que na maioria das vezes são perdidas pelos manãtodos comuns de estudar o ciclo do carbono", disse Giovannoni, que participou da pesquisa sobre acetona e isopreno. "O SAR11 tem a surpreendente capacidade metaba³lica de oxidar e produzir uma variedade de compostos orga¢nicos vola¡teis , ou VOCs, que podem se difundir na atmosfera."
VOCs são vários produtos químicos que contem carbono com alta pressão de vapor e baixa solubilidade em a¡gua, alguns dos quais podem causar efeitos adversos a saúde humana.
"Ainda não temos uma imagem clara do ciclo da acetona e do isopreno, mas sabemos que existem aspectos ocultos do ciclo do carbono que precisam de estudos mais aprofundados antes de podermos compreender totalmente o movimento do carbono atravanãs dos sistemas biola³gicos no oceano." Halsey disse. "a‰ importante compreender o potencial do SAR11 e de outras bactanãrias para controlar a emissão de gases ativos para o clima, pois ajuda nosso entendimento geral da mudança climática e da estabilidade."
Os cientistas dizem que os pra³ximos passos incluem dissecar os mecanismos bioquímicos subjacentes ao ciclo de compostos orga¢nicos vola¡teis e tentar vincular os processos microbianos marinhos a s emissaµes de gases e ao transporte de produtos químicos na atmosfera.
"Pla¢ncton trocando gases nasuperfÍcie do oceano émuito mais comum do que se pensava", disse Halsey.
Os resultados foram publicados em Microbiologia Ambiental .