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| DOI | 10.1016/j.palaeo.2018.08.001 |
| Biomarker signatures of the iconic Glossopteris plant | |
| Tewari A.; D'Rozario A.; Bhattacharya S.; Barua A.; Bera M.; Bera S.; Dutta S. | |
| 发表日期 | 2019 |
| ISSN | 0031-0182 |
| 卷号 | 531 |
| 英文摘要 | Glossopteris is the quintessential marker plant that dominated the forests of the Southern Hemisphere continents during the Permian before their abrupt extinction at the close of the Palaeozoic. Fossilized leaf and stem remains of Glossopteris plants, collected from the Permian succession of eastern India, were analysed to recognize the molecular signatures of solvent-extractable and non-extractable organic matter. Lipid-derived aliphatic and aromatic biomarkers were studied using GC–MS and GC×GC-TOFMS, while tetramethylammonium hydroxide (TMAH) thermochemolysis with GC–MS and GC×GC-TOFMS was used to reveal lignin precursors. The thermal maturity indices indicate low thermal rank for both samples. The presence of aromatic diterpanes in the leaf extract suggests that the Glossopteris plant was able to biosynthesize abietic acid and related plant terpenoids. The thermochemolysis products (thermochemolysates) of the samples contain monomethoxy-, and dimethoxybenzene derivatives produced from p‑hydroxyphenyl and guaiacyl units of lignin, respectively, which are the main constituents of extant gymnosperm lignin. The thermochemolysates indicate that lignin biosynthesis had evolved in Glossopteris. © 2018 Elsevier B.V. |
| 英文关键词 | Biosynthesis; Diterpanes; Gondwana; India; Lignin biopolymer; Permian |
| 语种 | 英语 |
| scopus关键词 | biomarker; extinction; fern; fossil record; Gondwana; lignin; Paleozoic; Permian; polymer; skeletal remains; Southern Hemisphere; thermal maturity; Glossopteris; Gymnospermae |
| 来源期刊 | Palaeogeography, Palaeoclimatology, Palaeoecology
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/150875 |
| 作者单位 | Department of Earth Sciences, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra 400076, India; Narasinha Dutt College, 129, Bellilious Road, Howrah, West Bengal 711101, India; Centre of Advanced Study, Palaeobotany-Palynology Laboratory, Department of Botany, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, West Bengal 700019, India; Department of Earth and Environmental Sciences, IISER Mohali, Sector 81, Mohali, Punjab 140306, India |
| 推荐引用方式 GB/T 7714 | Tewari A.,D'Rozario A.,Bhattacharya S.,et al. Biomarker signatures of the iconic Glossopteris plant[J],2019,531. |
| APA | Tewari A..,D'Rozario A..,Bhattacharya S..,Barua A..,Bera M..,...&Dutta S..(2019).Biomarker signatures of the iconic Glossopteris plant.Palaeogeography, Palaeoclimatology, Palaeoecology,531. |
| MLA | Tewari A.,et al."Biomarker signatures of the iconic Glossopteris plant".Palaeogeography, Palaeoclimatology, Palaeoecology 531(2019). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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