Physiological aspects of mangrove (Laguncularia racemosa) grown in microcosms with oil-degrading bacteria and oil contaminated sediment

被引：15

作者：

Sodre, Vanessa ^{[1
,4
]}

Caetano, Vanessa S. ^{[4
]}

Rocha, Renata M. ^{[1
]}

Carmo, Flavia L. ^{[2
,4
]}

Medici, Leonardo O. ^{[3
]}

Peixoto, Raquel S. ^{[2
,4
]}

Rosado, Alexandre S. ^{[2
,4
]}

Reinert, Fernanda ^{[1
,4
]}

机构：

[1] Univ Fed Rio de Janeiro, Lab Ecofisiol Vegetal, Inst Biol, BR-21941 Rio De Janeiro, Brazil

[2] Univ Fed Rio de Janeiro, Lab Ecol Microbiana Mol, Inst Microbiol Prof Paulo de Goes, BR-21941 Rio De Janeiro, Brazil

[3] Univ Fed Rio de Janeiro, Lab Fisiol, Dept Quim, BR-21941 Rio De Janeiro, Brazil

[4] Univ Fed Rio de Janeiro, Programa Posgrad Biotecnol Vegetal, BR-21941 Rio De Janeiro, Brazil

来源：

ENVIRONMENTAL POLLUTION | 2013年 / 172卷

关键词：

Bioremediation; Oil contamination; Mangrove; Photosynthetic efficiency; Oxidative stress; Laguncularia racemosa; CHLOROPHYLL FLUORESCENCE; PHOTOSYNTHESIS; PETROCHEMICALS; SEEDLINGS; IMPACT; PLANTS; YIELD;

D O I：

10.1016/j.envpol.2012.09.003

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

To assess the severity of oil spills on mangroves, diagnosis of the vegetation health is crucial. Some aspects of photosynthesis such as photochemical efficiency and leaf pigment composition together with the level of oxidative stress may constitute reliable indicators for vegetation health. To test this approach 14 month old Laguncularia racemosa were contaminated with 5 L m(-2) of the marine fuel oil MF-380 and treated with an oil degrading bacterial consortium in microcosms. Contamination resulted in a 20% decrease in shoot dry weight after 128 days. Photochemical efficiency, pigment content, catalase and ascorbate peroxidase remained unchanged. Multivariate ordination of DGGE microbial community fingerprints revealed a pronounced separation between the oil contaminated and the non-contaminated samples. Further studies are necessary before physiological parameters can be recommended as indicators for plant's health in oil polluted mangroves. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：243 / 249

页数：7

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