Lehours A. C., Le Jeune A. H., Aguer J. P., Cereghino R., Corbara B., Keraval B., Leroy Céline, Perriere F., Jeanthon C., Carrias J. F. (2016). Unexpectedly high bacteriochlorophyll a concentrations in neotropical tank bromeliads. Environmental Microbiology Reports, 8 (5), p. 689-698. ISSN 1758-2229.
Titre du document
Unexpectedly high bacteriochlorophyll a concentrations in neotropical tank bromeliads
Lehours A. C., Le Jeune A. H., Aguer J. P., Cereghino R., Corbara B., Keraval B., Leroy Céline, Perriere F., Jeanthon C., Carrias J. F.
Source
Environmental Microbiology Reports, 2016,
8 (5), p. 689-698 ISSN 1758-2229
The contribution of bacteriochlorophyll a (BChl a) to photosynthetically driven electron transport is generally low in aquatic and terrestrial systems. Here, we provide evidence that anoxygenic bacterial phototrophy is widespread and substantial in water retained by tank bromeliads of a primary rainforest in French Guiana. An analysis of the water extracted from 104 randomly selected tank bromeliads using infrared fluorimetry suggested the overall presence of abundant anoxygenic phototrophic bacterial populations. We found that purple bacteria dominated these populations responsible for unusually high BChl a/chlorophyll a ratios (>50%). Our data suggest that BChl a-based phototrophy in tank bromeliads can have significant effects on the ecology of tank-bromeliad ecosystems and on the carbon and energy fluxes in Neotropical forests.
Plan de classement
Ecologie, systèmes aquatiques [036]
;
Sciences du monde végétal [076]
;
Biotechnologies [084]
