論文 - 詳細
| RRC ID | 60758 |
|---|---|
| 著者 | Antonaru LA, Cardona T, Larkum AWD, Nürnberg DJ. |
| タイトル | Global distribution of a chlorophyll f cyanobacterial marker. |
| ジャーナル | ISME J |
| Abstract |
Some cyanobacteria use light outside the visible spectrum for oxygenic photosynthesis. The far-red light (FRL) region is made accessible through a complex acclimation process that involves the formation of new phycobilisomes and photosystems containing chlorophyll f. Diverse cyanobacteria ranging from unicellular to branched-filamentous forms show this response. These organisms have been isolated from shaded environments such as microbial mats, soil, rock, and stromatolites. However, the full spread of chlorophyll f-containing species in nature is still unknown. Currently, discovering new chlorophyll f cyanobacteria involves lengthy incubation times under selective far-red light. We have used a marker gene to detect chlorophyll f organisms in environmental samples and metagenomic data. This marker, apcE2, encodes a phycobilisome linker associated with FRL-photosynthesis. By focusing on a far-red motif within the sequence, degenerate PCR and BLAST searches can effectively discriminate against the normal chlorophyll a-associated apcE. Even short recovered sequences carry enough information for phylogenetic placement. Markers of chlorophyll f photosynthesis were found in metagenomic datasets from diverse environments around the globe, including cyanobacterial symbionts, hypersaline lakes, corals, and the Arctic/Antarctic regions. This additional information enabled higher phylogenetic resolution supporting the hypothesis that vertical descent, as opposed to horizontal gene transfer, is largely responsible for this phenotype's distribution. |
| 巻・号 | 14(9) |
| ページ | 2275-2287 |
| 公開日 | 2020-9-1 |
| DOI | 10.1038/s41396-020-0670-y |
| PII | 10.1038/s41396-020-0670-y |
| PMID | 32457503 |
| PMC | PMC7608106 |
| MeSH | Antarctic Regions Arctic Regions Chlorophyll* / analogs & derivatives Chlorophyll A Cyanobacteria* / genetics Light Photosynthesis Phylogeny |
| IF | 9.18 |
| 引用数 | 0 |
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| 最多言及媒体 | X(Twitter) |
| 各媒体での言及数の合計 | 24 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 0.0 |
| リソース情報 | |
| 藻類 | NIES-267 NIES-593 NIES-3974 |