Two new polyploid species closely related to <i>Alnus glutinosa</i> in Europe and North Africa – An analysis based on morphometry, karyology, flow cytometry and microsatellites

Vít, Petr; Douda, Jan; Krak, Karol; Havrdová, Alena; Mandák, Bohumil

doi:10.12705/663.4

Cited by 28 publications

(24 citation statements)

References 53 publications

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“…In addition, some other more thematic and comprehensive data sources were used such as the European Atlas of Forest (San-Miguel-Ayanz et al 2016) and completed by some recent papers concerning the description of some new tree taxa, such as Tamarix minoa in Crete (Villar et al 2015) or two cryptic species in the Alnus glutinosa group (Vít et al 2017). Data synthesis was led by D. Pavon & F. Médail between 2014 and 2018.…”

Section: Data Sourcesmentioning

confidence: 99%

What is a tree in the Mediterranean Basin hotspot? A critical analysis

et al. 2019

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Background: Tree species represent 20% of the vascular plant species worldwide and they play a crucial role in the global functioning of the biosphere. The Mediterranean Basin is one of the 36 world biodiversity hotspots, and it is estimated that forests covered 82% of the landscape before the first human impacts, thousands of years ago. However, the spatial distribution of the Mediterranean biodiversity is still imperfectly known, and a focus on tree species constitutes a key issue for understanding forest functioning and develop conservation strategies. Methods: We provide the first comprehensive checklist of all native tree taxa (species and subspecies) present in the Mediterranean-European region (from Portugal to Cyprus). We identified some cases of woody species difficult to categorize as trees that we further called "cryptic trees". We collected the occurrences of tree taxa by "administrative regions", i.e. country or large island, and by biogeographical provinces. We studied the species-area relationship, and evaluated the conservation issues for threatened taxa following IUCN criteria. Results: We identified 245 tree taxa that included 210 species and 35 subspecies, belonging to 33 families and 64 genera. It included 46 endemic tree taxa (30 species and 16 subspecies), mainly distributed within a single biogeographical unit. The countries with the highest tree richness are Greece (146 taxa), Italy (133), Albania (122), Spain (155), Macedonia (116), and Croatia (110). The species-area relationship clearly discriminated the richest central-eastern (Balkans) and northern (Alpine and Cevenno-Pyrenean) biogeographical provinces, against the five western provinces in the Iberian Peninsula. We identified 44 unrecognized "cryptic trees", representing 21% of the total trees. Among the 245 taxa identified, 19 are considered to be threatened (15 CR + EN + VU) or near threatened (4 NT) by IUCN. Conclusions: The Mediterranean-European region includes an unsuspectedly high number of tree taxa, almost 200 tree taxa more than in the central European region. This tree diversity is not distributed evenly and culminates in the central-eastern part of the Mediterranean region, whereas some large Tyrrhenian islands shelter several narrow endemic tree taxa. Few taxa are recognized as threatened in the IUCN Red list, and the vulnerability of these species is probably underestimated.

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Section: Data Sourcesmentioning

confidence: 99%

What is a tree in the Mediterranean Basin hotspot? A critical analysis

et al. 2019

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“…The two tetraploid populations found by Mandák et al [35] were located in the Iberian Peninsula and Dinaric Alps, respectively. Further analysis by the same laboratory proposed that these two tetraploid populations were new tetraploid species that were closely related to A. glutinosa and thus were subsequently named as A. lusitanica and A. rohlenae [36].…”

Section: Polyploidy and Data Analysis In A Cremastogynementioning

confidence: 99%

Genetic Diversity and Population Structure of Alnus cremastogyne as Revealed by Microsatellite Markers

Hong-ying

Wang

Huang

et al. 2019

Forests

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Alnus cremastogyne Burk. is a nonleguminous, nitrogen-fixing tree species. It is also the most important endemic species of Alnus Mill. in China, possessing important ecological functions. This study investigated population genetic variation in A. cremastogyne using 175 trees sampled from 14 populations native to Sichuan Province with 25 simple sequence repeat (SSR) markers. Our analysis showed that A. cremastogyne has an average of 5.83 alleles, 3.37 effective alleles, an expected heterozygosity of 0.63, and an observed heterozygosity of 0.739, indicating a relatively high level of genetic diversity. The A. cremastogyne populations in Liangshan Prefecture (Meigu, Mianning) showed the highest level of genetic diversity, whereas the Yanting population had the lowest. Our analysis also showed that the average genetic differentiation of 14 A. cremastogyne populations was 0.021. Analysis of molecular variance (AMOVA) revealed that 97% of the variation existed within populations; only 3% was among populations. Unweighted pair-group method with arithmetic means (UPGMA) clustering and genetic structure analysis showed that the 14 A. cremastogyne populations could be clearly divided into three clusters: Liangshan Prefecture population, Ganzi Prefecture population, the other population in the mountain area around the Sichuan Basin and central Sichuan hill area, indicating some geographical distribution. Further analysis using the Mantel test showed that this geographical distribution was significantly correlated with elevation.

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“…incana (hereafter Alnus incana), family Betulaceae, is a diploid (2n = 2x = 28), monoecious and wind-pollinated, relatively short-lived, small to medium-sized deciduous tree (Tallantire 1974;Mandák et al 2016;Vít et al 2017). It is a light-demanding, hygromesophilous species which tolerates low winter temperatures.…”

Section: Introduction Uvodmentioning

confidence: 99%