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Identifier |
000426390 |
Title |
Δημογραφική ιστορία του είδους Salvia fruticosa Mill. στην Κρήτη σε ένα οικολογικό πλαίσιο βασισμένη σε γενωμικά δεδομένα |
Alternative Title |
Demographic history of Salvia fruticosa Mill.in Crete based on genomic data within an ecological context |
Author
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Γρηγοριάδου Ζορμπά, Ουρανία
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Thesis advisor
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Πυρίντσος, Στέργιος
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Reviewer
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Σαρρής, Παναγιώτης
Κοτζαμπάσης, Κυριάκος
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Abstract |
Background: The research interest for the species Salvia fruticosa is related
to the biological activity of its constituents in various biological systems, as
well as to the economic value of the species due to its use as bulk material
for the production of compounds that exhibit a high value for the food and
drug industry. The study of the genetic environmental and epigenetic
characteristics of the species and their spatial differentiation are a priority
because they determine the biological variability of the active ingredients
isolated from it. The demographic history of the species and its role in
shaping spatial diversification of the species has been largely neglected,
and here the filling of this gap is attempted.
Target: Here, the reveal of the demographic history of Salvia fruticosa in
Crete, based on genomic data, within an ecological context is attempted.
Methodology: The genomic data of Crete for this species were made
available by the Laboratory of Plant Ecology and Terrestrial Ecosystems
Management exclusively for the implementation of this master thesis.They
involved single nucleotide polymorphisms (SNPs) resulting from genome
analysis with Diversity Arrays Technology (DArT), an open-source
microarray software platform.The Diffusion Approximation for
Demographic Inference has been used for data processing, utilizing the
dadi package through the Python programming language. Maximum
entropy models using WorldClim bioclimatic data were used for spatial
analysis of this species and future projections for 2050 based on a specific
climate scenario were used.
Results: Of the one-dimensional models tested, it turned out that the
growth model that predicts an exponential growth that starts some time
ago was the most eligible based on model evaluation criteria. From the
two-dimensional models tested, there was convergence in the Secondary
contact model with symmetric migration that predicts separation with no
gene flow, followed by secondary communication with symmetric
migration. It also emerged that the two groups of populations whose
demographic history was studied differ in their projected future
distribution based on a specific climate change scenario.
Conclusions: The genomic differentiation of populations of Salvia fruticosa species in Crete, which has no adaptive character, seems to be related to
the demographic history of the populations. Also, this diversification,
despite its non-adaptive character, relates to the projected responses of
populations to climate change scenarios, which gives rise to expectations of
a) future exploration of the role that demographic histories of populations
may play in responding to climate change and b) to identify specific
polymorphisms that are likely to be involved in species responses to
climate change.
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Language |
Greek |
Subject |
DADI |
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SNPS |
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Δημογραφία |
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Μονονουκλεοτιδικοί Πολυμορφισμοί |
Issue date |
2019-11-29 |
Collection
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School/Department--School of Sciences and Engineering--Department of Biology--Post-graduate theses
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Type of Work--Post-graduate theses
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Permanent Link |
https://elocus.lib.uoc.gr//dlib/1/c/9/metadata-dlib-1575025376-135769-3484.tkl
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Views |
343 |