A Study on the Diversity of Natural <i>Arbutus unedo</i> Hellenic Populations

The strawberry tree (<i>Arbutus unedo</i>) is well-known for the use of its leaves, fruits, bark and roots in traditional medicine and, more recently, in the therapy of hypertension, diabetes, inflammatory and cardiovascular diseases. The plant contains several antioxidant compounds. The...

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Main Authors: Filippos A. Aravanopoulos, Despina-Eleni Politi, Maria-Irini Antoniadou, Nikolaos Tourvas
Format: Article
Language:English
Published: MDPI AG 2022-10-01
Series:Environmental Sciences Proceedings
Subjects:
Online Access:https://www.mdpi.com/2673-4931/22/1/35
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author Filippos A. Aravanopoulos
Despina-Eleni Politi
Maria-Irini Antoniadou
Nikolaos Tourvas
author_facet Filippos A. Aravanopoulos
Despina-Eleni Politi
Maria-Irini Antoniadou
Nikolaos Tourvas
author_sort Filippos A. Aravanopoulos
collection DOAJ
description The strawberry tree (<i>Arbutus unedo</i>) is well-known for the use of its leaves, fruits, bark and roots in traditional medicine and, more recently, in the therapy of hypertension, diabetes, inflammatory and cardiovascular diseases. The plant contains several antioxidant compounds. The diversity of natural <i>A. unedo</i> populations from Greece is studied with leaf morphometrics and DNA markers. Five natural populations spanning from east (Lesvos island 39°12′ N, 26°05′ E) to west (Igoumenitsa 39°30′ N, 20°15′ E) and from north (Arnea, 40°29′ N, 23°38′ E) to south (Ancient Olympia 37°38′ Ν, 21°46′ Ε) were sampled. The fifth population was that of Kassandreia (40°01′ N, 23°26′ E) and the average sample size per population was <i>N</i> = 20 trees. DNA extraction and isolation was a challenge due to high amounts of phenolics present in leaves (arbutin, catechin and ethyl gallate) and among the many protocols studied, the NucleoSpin<sup>®</sup> Plant II Mini Kit provided the best results for downstream applications. Morphometric population variation was studied by employing 11 leaf size and shape parameters recorded by image processing and analysing software. When contrasting north/south population comparisons, it was found that, regarding measurements of central tendency, the northern population (Kassandreia) presented the highest values, while in contrast, in the measures of spread, the highest values were found in the southern population (Ancient Olympia). Furthermore, statistically significant population differences were found in leaf size, but not in leaf shape parameters. The combination of DNA markers and morphometric analyses provides a foundation for diversity studies and characterization of <i>A. unedo</i> populations for downstream applications in population genetics studies, genetic conservation and in medicinal and natural products research.
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spelling doaj.art-ee01a4ba68c94d9db3ab20d32f02ad4d2023-11-17T10:59:42ZengMDPI AGEnvironmental Sciences Proceedings2673-49312022-10-012213510.3390/IECF2022-13128A Study on the Diversity of Natural <i>Arbutus unedo</i> Hellenic PopulationsFilippos A. Aravanopoulos0Despina-Eleni Politi1Maria-Irini Antoniadou2Nikolaos Tourvas3Laboratory of Forest Genetics, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceLaboratory of Forest Genetics, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceLaboratory of Forest Genetics, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceLaboratory of Forest Genetics, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceThe strawberry tree (<i>Arbutus unedo</i>) is well-known for the use of its leaves, fruits, bark and roots in traditional medicine and, more recently, in the therapy of hypertension, diabetes, inflammatory and cardiovascular diseases. The plant contains several antioxidant compounds. The diversity of natural <i>A. unedo</i> populations from Greece is studied with leaf morphometrics and DNA markers. Five natural populations spanning from east (Lesvos island 39°12′ N, 26°05′ E) to west (Igoumenitsa 39°30′ N, 20°15′ E) and from north (Arnea, 40°29′ N, 23°38′ E) to south (Ancient Olympia 37°38′ Ν, 21°46′ Ε) were sampled. The fifth population was that of Kassandreia (40°01′ N, 23°26′ E) and the average sample size per population was <i>N</i> = 20 trees. DNA extraction and isolation was a challenge due to high amounts of phenolics present in leaves (arbutin, catechin and ethyl gallate) and among the many protocols studied, the NucleoSpin<sup>®</sup> Plant II Mini Kit provided the best results for downstream applications. Morphometric population variation was studied by employing 11 leaf size and shape parameters recorded by image processing and analysing software. When contrasting north/south population comparisons, it was found that, regarding measurements of central tendency, the northern population (Kassandreia) presented the highest values, while in contrast, in the measures of spread, the highest values were found in the southern population (Ancient Olympia). Furthermore, statistically significant population differences were found in leaf size, but not in leaf shape parameters. The combination of DNA markers and morphometric analyses provides a foundation for diversity studies and characterization of <i>A. unedo</i> populations for downstream applications in population genetics studies, genetic conservation and in medicinal and natural products research.https://www.mdpi.com/2673-4931/22/1/35strawberry treeDNA qualitypopulation variationleaf morphometrics
spellingShingle Filippos A. Aravanopoulos
Despina-Eleni Politi
Maria-Irini Antoniadou
Nikolaos Tourvas
A Study on the Diversity of Natural <i>Arbutus unedo</i> Hellenic Populations
Environmental Sciences Proceedings
strawberry tree
DNA quality
population variation
leaf morphometrics
title A Study on the Diversity of Natural <i>Arbutus unedo</i> Hellenic Populations
title_full A Study on the Diversity of Natural <i>Arbutus unedo</i> Hellenic Populations
title_fullStr A Study on the Diversity of Natural <i>Arbutus unedo</i> Hellenic Populations
title_full_unstemmed A Study on the Diversity of Natural <i>Arbutus unedo</i> Hellenic Populations
title_short A Study on the Diversity of Natural <i>Arbutus unedo</i> Hellenic Populations
title_sort study on the diversity of natural i arbutus unedo i hellenic populations
topic strawberry tree
DNA quality
population variation
leaf morphometrics
url https://www.mdpi.com/2673-4931/22/1/35
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