The rise of the rhizosolenid diatoms
Sinninghe Damsté, J.S.; Muyzer, G.; Abbas, B.; Rampen, S.W.; Massé, G.; Allard, W.G.; Belt, S.T.; Robert, J.-M.; Rowland, S.J.; Moldowan, J.M.; Barbanti, S.M.; Fago, F.J.; Denisevich, P.; Dahl, J.; Trindade, L.A.F.; Schouten, S. (2004). The rise of the rhizosolenid diatoms. Science (Wash.) 304(5670): 584-587. https://dx.doi.org/10.1126/science.1096806 In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075; e-ISSN 1095-9203, more |  |
| Keywords | Acids > Organic compounds > Organic acids > Nucleic acids > DNA
Algae > Diatoms
Ribosomes
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| Authors | | Top | - Sinninghe Damsté, J.S.
- Muyzer, G., more
- Abbas, B.
- Rampen, S.W.
- Massé, G.
- Allard, W.G.
| - Belt, S.T.
- Robert, J.-M.
- Rowland, S.J.
- Moldowan, J.M.
- Barbanti, S.M.
| - Fago, F.J.
- Denisevich, P.
- Dahl, J.
- Trindade, L.A.F.
- Schouten, S.
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| Abstract | The 18S ribosomal DNA molecular phylogeny and lipid composition of over 120 marine diatoms showed that the capability to biosynthesize highly branched isoprenoid (HBI) alkenes is restricted to two specific phylogenetic clusters, which independently evolved in centric and pennate diatoms. The molecular record of C25 HBI chemical fossils in a large suite of well-dated marine sediments and petroleum revealed that the older cluster, composed of rhizosolenid diatoms, evolved 91.5 ± 1.5 million years ago (Upper Turonian), enabling an accurate dating of the pace of diatom evolution that is unprecedented. The rapid rise of the rhizosolenid diatoms probably resulted from a major reorganization of the nutrient budget in the mid-Cretaceous oceans, triggered by plate tectonics. |
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