Use of phytoplankton-derived dissolved organic carbon by different types of bacterioplankton
13 pages, 8 figures, 1 table, additional supporting information may be found in the online version of this article: http://onlinelibrary.wiley.com/doi/10.1111/j.1462-2920.2012.02787.x/suppinfo
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Society for Applied Microbiology
2012-09
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dig-icm-es-10261-921232020-12-09T16:24:51Z Use of phytoplankton-derived dissolved organic carbon by different types of bacterioplankton Sarmento, Hugo Gasol, Josep M. 13 pages, 8 figures, 1 table, additional supporting information may be found in the online version of this article: http://onlinelibrary.wiley.com/doi/10.1111/j.1462-2920.2012.02787.x/suppinfo Phytoplankton and heterotrophic prokaryotes are major components of the microbial food web and interact continuously: heterotrophic prokaryotes utilize the dissolved organic carbon derived from phytoplankton exudation or cell lysis (DOCp), and mineralization by heterotrophic prokaryotes provides inorganic nutrients for phytoplankton. For this reason, these communities are expected to be closely linked, although the study of the interactions between them is still a major challenge. Recent studies have presented interactions between phytoplankton and heterotrophic prokaryotes based on coexistence or covariation throughout a time-series. However, a real quantification of the carbon flow within these networks (defined as the interaction strength, IS) has not been achieved yet. This is critical to understand the selectivity degree of bacteria responding to specific algal DOCp. Here we used microautoradiography to quantify the preferences of the major heterotrophic prokaryote phylogenetic groups on DOC derived from several representative phytoplankton species, and expressed these preferences as an IS value. The distribution of the ISs was not random but rather skewed towards weak interactions, in a similar way as the distributions described for stable complex non-microbial ecosystems, indicating that there are some cases of high specificity on the use of specific algal DOCp by some bacterial groups, but weak interactions are more common and may be relevant as well. The variety of IS patterns observed supports the view that the vast range of different resources (different types of organic molecules) available in the sea selects and maintains the high levels of diversity described for marine bacterioplankton. © 2012 Society for Applied Microbiology and Blackwell Publishing Ltd. H. S. benefited from grants from the Spanish MEC (SB2006-0060) and MCyI (Juan de la Cierva Fellowship JCI-2008-2727), and Portuguese MCTES (FCT grant SFRH/BPD/34041/2006). The work was supported by Spanish MCyT projects MICROOCEAN PANGENOMES (CGL2011-26848), MICRODIVERSITY (CGL2008-00762/BOS), SUMMER (CTM2008-03309/MAR) and STORM (CTM2009-09352/MAR) Peer Reviewed 2014-02-20T09:51:44Z 2014-02-20T09:51:44Z 2012-09 2014-02-20T09:51:44Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1111/j.1462-2920.2012.02787.x issn: 1462-2912 e-issn: 1462-2920 Environmental Microbiology 14(9): 2348-2360 (2012) http://hdl.handle.net/10261/92123 10.1111/j.1462-2920.2012.02787.x en https://doi.org/10.1111/j.1462-2920.2012.02787.x none Society for Applied Microbiology |
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13 pages, 8 figures, 1 table, additional supporting information may be found in the online
version of this article: http://onlinelibrary.wiley.com/doi/10.1111/j.1462-2920.2012.02787.x/suppinfo |
| format |
artículo |
| author |
Sarmento, Hugo Gasol, Josep M. |
| spellingShingle |
Sarmento, Hugo Gasol, Josep M. Use of phytoplankton-derived dissolved organic carbon by different types of bacterioplankton |
| author_facet |
Sarmento, Hugo Gasol, Josep M. |
| author_sort |
Sarmento, Hugo |
| title |
Use of phytoplankton-derived dissolved organic carbon by different types of bacterioplankton |
| title_short |
Use of phytoplankton-derived dissolved organic carbon by different types of bacterioplankton |
| title_full |
Use of phytoplankton-derived dissolved organic carbon by different types of bacterioplankton |
| title_fullStr |
Use of phytoplankton-derived dissolved organic carbon by different types of bacterioplankton |
| title_full_unstemmed |
Use of phytoplankton-derived dissolved organic carbon by different types of bacterioplankton |
| title_sort |
use of phytoplankton-derived dissolved organic carbon by different types of bacterioplankton |
| publisher |
Society for Applied Microbiology |
| publishDate |
2012-09 |
| url |
http://hdl.handle.net/10261/92123 |
| work_keys_str_mv |
AT sarmentohugo useofphytoplanktonderiveddissolvedorganiccarbonbydifferenttypesofbacterioplankton AT gasoljosepm useofphytoplanktonderiveddissolvedorganiccarbonbydifferenttypesofbacterioplankton |
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