Climate-driven past and present interspecies gene flow may have contributed to shape microscale adaptation capacity in Tillandsia lomas in hyperarid south American desert systems

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Title:Main Title: Climate-driven past and present interspecies gene flow may have contributed to shape microscale adaptation capacity in Tillandsia lomas in hyperarid south American desert systems
Description:Abstract: Epiarenic (sand-growing) Tillandsia vegetation in the hyperarid and arid region of the Chilean-Peruvian Atacama Desert represents an extreme case of adaptation in plant species-poor ecosystems. The involved species exist at the limit of terrestrial life and form mono/oligo-specific and very characteristic structures within the landscape. Covering thousands of square kilometers they represent the major carbon sink in the hyperarid Atacama core. The various Tillandsia species and respective vegetation may have evolved and adapted independently to this extreme environment. The most abundant vicariant diploid species are T. landbeckii in Chile and T. purpurea in Peru. Spatio-temporally varying distribution range overlaps may have caused potentially adaptive gene flow between different species leading to present day gene pools. Using species distribution modelling we explored the idea that from Last Glacial Maximum (LGM) onwards both species shifted their distribution ranges, which resulted in the formation of varying suture zones from Peru towards northern Chile. We further explored genetic data from a Tillandsia loma vegetation in Southern Peru with three sympatrically growing species exemplifying inter-species gene flow crossing even ploidy levels. This mechanism highlights a strategy to evolve and adapt more rapidly to environmental changes in extreme arid and hyperarid habitats and provides an opportunity for Tillandsia populations to efficiently conserve new genotypes via subsequent clonal propagation.
Identifier:https://doi.org/10.1016/j.gloplacha.2023.104258 (DOI)
Responsible Party
Creators:Eric Stein (Author), C.R. Luque-Fernández (Author), Christiane Kiefer (Author), Johanna Möbus (Author), G. Anthony Pauca-Tanco (Author), Sarina Jabbusch (Author), Dörte Harpke (Author), Julia Bechteler (Author), Dietmar Quandt (Author), Francisco Villasante Benavides (Author), Marcus Koch (Author)
Publisher:Global and Planetary Change
Publication Year:2023
Topic
CRC1211 Topic:Biology
Related Subproject:B1
Subject:Keyword: Ecology of Plants
Geogr. Information Topic:Environment
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Filename:Stein_et_al_2023.pdf
Data Type:Text - publication
File Size:13.5 MB
Date:Accepted: 28.09.2023
Mime Type:application/pdf
Data Format:PDF
Language:English
Status:Completed
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Download Permission:Free
General Access and Use Conditions:According to the CRC1211DB data policy agreement.
Access Limitations:According to the CRC1211DB data policy agreement.
Licence:[CRC1211DB] Data policy agreement
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Publication Status:Published
Review Status:Peer reviewed
Publication Type:Article
Article Type:Journal
Source:Elsevier
Issue:104258
Volume:230
Number of Pages:19 (1 - 19)
Metadata Details
Metadata Creator:Johanna Möbus
Metadata Created:05.10.2023
Metadata Last Updated:05.10.2023
Subproject:B1
Funding Phase:2
Metadata Language:English
Metadata Version:V50
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