Genetic characterization of tertiary relict endemic Phoenix theophrasti populations in Turkey and phylogenetic relations of the species with other palm species revealed by SSR markers

Vardareli, Nilden; Doğaroğlu, Taylan; Doğaç, Ersin; Taşkın, Vatan; Taşkin, Belgin Göçmen

doi:10.1007/s00606-019-01580-8

Cited by 18 publications

(19 citation statements)

References 67 publications

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“…Results from this work revealed a range of the inbreeding coefficient of -0.492 (TR) to -0.363 (LM), which is much lower than those found in e.g. H. drasticus (0.248-0.303) 34 , Calotropis gigantea (0.167), C. procera (0.177) 77 , or Phoenix theophrasti (0.9) 78 . The negative inbreeding values found here suggest the existence of random mating 79 among individuals of W. salutaris and might also explain the levels of heterozygosis found here.…”

Section: Discussioncontrasting

confidence: 63%

The genetic legacy of fragmentation and overexploitation in the threatened medicinal African pepper-bark tree, Warburgia salutaris

Senkoro

Talhinhas

Simões

et al. 2020

Sci Rep

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The pepper-bark tree (Warburgia salutaris) is one of the most highly valued medicinal plant species worldwide. Native to southern Africa, this species has been extensively harvested for the bark, which is widely used in traditional health practices. Illegal harvesting coupled with habitat degradation has contributed to fragmentation of populations and a severe decline in its distribution. Even though the species is included in the IUCN Red List as Endangered, genetic data that would help conservation efforts and future re-introductions are absent. We therefore developed new molecular markers to understand patterns of genetic diversity, structure, and gene flow of W. salutaris in one of its most important areas of occurrence (Mozambique). In this study, we have shown that, despite fragmentation and overexploitation, this species maintains a relatively high level of genetic diversity supporting the existence of random mating. Two genetic groups were found corresponding to the northern and southern locations. Our study suggests that, if local extinctions occurred in Mozambique, the pepper-bark tree persisted in sufficient numbers to retain a large proportion of genetic diversity. Management plans should concentrate on maintaining this high level of genetic variability through both in and ex-situ conservation actions.

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Section: Discussioncontrasting

confidence: 63%

The genetic legacy of fragmentation and overexploitation in the threatened medicinal African pepper-bark tree, Warburgia salutaris

Senkoro

Talhinhas

Simões

et al. 2020

Sci Rep

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“…The similarity result of P. theophrasti and P. dactylifera, shown in Figure 1 was parallel to the findings of Vardareli et al (2019) in which the genetic characterization of P. theophrasti was investigated and the lowest genetic differentiation was found with P. dactylifera.To visualize the interrelations between variables and observations, given in Figure 2, was enabled through the biplot graph of fatty acids. Moreover, it can be understood which parameter was observed in which species and by how much.…”

Section: Discussionsupporting

confidence: 81%

“…Although it has been neglected for a long time, traditional populations used it for weaving, making spoons, and as a source of food (Garcia-Granero et al, 2020). P. theophrasti is a tertiary relict endemic (Vardareli et al, 2019). P. roebelenii naturally grows in northern Laos, Vietnam, and areas of Yunnan, in southern China (Barrow, 1994).…”

Section: Introductionmentioning

confidence: 99%

Seed oil content and fatty acid profiles of endemic Phoenix theophrasti Greuter, Phoenix roebelenii O’Brien, Phoenix caneriensis Hort. Ex Chabaud, and Phoenix dactylifera L. grown in the same locality in Turkey

Ergün¹

2021

Turk J Agric For

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Plants-based oils and fats usually obtained from seeds have been indispensable substances for mankind, both in nutritional and industrial respect. This study aimed to determine the total amount of oil and the fatty acid compositions of Phoenix theophrasti Greuter, P. roebelenii O'Brien, P. caneriensis Hort. Ex Chabaud, and P. dactylifera L.The seeds of these four Phoenix species were collected from the same location, east Mediterranean agroecological conditions when the fruits were fully ripened, which means the environmental factors that may affect the oil content and the fatty acid compositions were controlled. The highest oil content of the samples was obtained from P. caneriensis (8.435 g/100 g) and followed by P. dactylifera (6.400 g/100 g), P. roebelenii (5.130 g/100 g), and P. theophrasti (4.730 g/100 g), respectively. The dominant fatty acids detected in the seed oils were oleic acid (C18:

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“…For example, based on microsatellite markers, very low genetic differentiation was reported among natural populations of adult neotropical palms Oenocarpus bataua in a recently fragmented landscape and in a continuous forest in Ecuador (1.76%, Browne et al, 2015). Vardareli et al (2019) reported lower genetic differentiation among six populations of the relict endemic Phoenix theophrasti in Turkey. The F ST value was 0.34, and gene flow (Nm = 0.49) was very high within one generation among the six populations when compared to gene flow in M. argun based on SilicoDArT markers (old vs. younger individuals, Table 2).…”

Section: Discussionmentioning

confidence: 99%

Genetic Diversity and Population Structure of Medemia argun (Mart.) Wurttenb. ex H.Wendl. Based on Genome-Wide Markers

Elshibli

Korpelainen

2021

Front. Ecol. Evol.

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Medemia argun is a wild, dioecious palm, adapted to the harsh arid environment of the Nubian Desert in Sudan and southern Egypt. There is a concern about its conservation status, since little is known about its distribution, abundance, and genetic variation. M. argun grows on the floodplains of seasonal rivers (wadis). The continuing loss of suitable habitats in the Nubian Desert is threatening the survival of this species. We analyzed the genetic diversity, population genetic structure, and occurrence of M. argun populations to foster the development of conservation strategies for M. argun. Genotyping-by-sequencing (GBS) analyses were performed using a whole-genome profiling service. We found an overall low genetic diversity and moderate genetic structuring based on 40 single-nucleotide polymorphisms (SNPs) and 9,866 SilicoDArT markers. The expected heterozygosity of the total population (HT) equaled 0.036 and 0.127, and genetic differentiation among populations/groups (FST) was 0.052 and 0.092, based on SNP and SilicoDArT markers, respectively. Bayesian clustering analyses defined five genetic clusters that did not display any ancestral gene flow among each other. Based on SilicoDArT markers, the results of the analysis of molecular variance (AMOVA) confirmed the previously observed genetic differentiation among generation groups (23%; p < 0.01). Pairwise FST values indicated a genetic gap between old and young individuals. The observed low genetic diversity and its loss among generation groups, even under the detected high gene flow, show genetically vulnerable M. argun populations in the Nubian Desert in Sudan. To enrich and maintain genetic variability in these populations, conservation plans are required, including collection of seed material from genetically diverse populations and development of ex situ gene banks.

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Genetic characterization of tertiary relict endemic Phoenix theophrasti populations in Turkey and phylogenetic relations of the species with other palm species revealed by SSR markers

Cited by 18 publications

References 67 publications

The genetic legacy of fragmentation and overexploitation in the threatened medicinal African pepper-bark tree, Warburgia salutaris

The genetic legacy of fragmentation and overexploitation in the threatened medicinal African pepper-bark tree, Warburgia salutaris

Seed oil content and fatty acid profiles of endemic Phoenix theophrasti Greuter, Phoenix roebelenii O’Brien, Phoenix caneriensis Hort. Ex Chabaud, and Phoenix dactylifera L. grown in the same locality in Turkey

Genetic Diversity and Population Structure of Medemia argun (Mart.) Wurttenb. ex H.Wendl. Based on Genome-Wide Markers

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