气候变化领域集成服务门户(CCPortal): Marine sedimentary ancient DNA from Antarctic diatoms

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DOI	10.1016/j.palaeo.2024.112090
	Marine sedimentary ancient DNA from Antarctic diatoms
	Singh, Prashasti; Teixeira, Joao C.; Bolch, Christopher; Armbrecht, Linda
发表日期	2024
ISSN	0031-0182
EISSN	1872-616X
起始页码	640
卷号	640
英文摘要	Antarctica is one of the most susceptible regions to climate change on Earth. Rising ocean temperatures, glacier melting, and disruptions of marine ecosystems make this polar region a focus of research on ecosystem transformation associated with ongoing climate change. Within the Antarctic ecosystem, diatoms, a key group of phytoplankton at the base of the marine food web, play a crucial role in maintaining marine ecosystem balance and functioning. Conventionally, fossil diatom assemblages have been investigated in marine sediment records to reconstruct paleoenvironmental conditions and understand climate change patterns of Antarctica. Recently, the application of ancient DNA techniques to ocean sediments (sedimentary ancient DNA, sedaDNA) has provided new insights into diatom community responses to environmental change over geological time scales. One benefit of sedaDNA analysis is that this technique can detect fragile diatom species that do not preserve well and are thus difficult to study via traditional microscopy techniques. In this paper, we review the importance of diatoms as indicators of Antarctic paleoenvironmental change, the novel use of diatom sedaDNA to assist Antarctic paleoenvironmental reconstruction, and the challenges and promises of using the sedaDNA approach. We propose that Fragilariopsis cylindrus, an extant polar diatom species, is an ideal model organism to study adaptation patterns of diatoms to changing climate due to its ecological success through time and the availability of whole-genome information for this species. Novel genetic information obtainable from ancient F. cylindrus, as well as other diatoms, will help us to better predict the evolutionary and adaptive dynamics of this important group of primary producers in the climatically vulnerable Antarctic region.
英文关键词	Sedimentary ancient DNA; Antarctica; Palaeoenvironmental reconstruction; Fragilariopsis cylindrus; Evolution; Adaptation
语种	英语
WOS研究方向	Physical Geography ; Geology ; Paleontology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:001188913600001
来源期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/308521
作者单位	University of Tasmania; University of Tasmania; Australian National University; Universidade de Coimbra
推荐引用方式 GB/T 7714	Singh, Prashasti,Teixeira, Joao C.,Bolch, Christopher,et al. Marine sedimentary ancient DNA from Antarctic diatoms[J],2024,640.
APA	Singh, Prashasti,Teixeira, Joao C.,Bolch, Christopher,&Armbrecht, Linda.(2024).Marine sedimentary ancient DNA from Antarctic diatoms.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,640.
MLA	Singh, Prashasti,et al."Marine sedimentary ancient DNA from Antarctic diatoms".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 640(2024).