In search of hybridity: the case of Karelian spruces

Volkova, Polina A.; Shipunov, Alexey; Borisova, P. A.; Moseng, Reed; Ivens, Ranelle

doi:10.14214/sf.1072

Cited by 6 publications

(6 citation statements)

References 20 publications

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“…The question of the species specificity of the hap lotypes of the intergenic spacer trnT trnF of cpDNA, which were specified as typical of P. obovata spruces of Siberian origin (Tollefsrud and Spirensen, 2011) and later described by P. Volkova (Volkova et al, 2014) on the material from Karelia remains unclear. The avail able published data, unfortunately, do not conclusively answer the question on how reliably the described haplotypes GCCA and _CCA of the intergenic spacer trnT trnF are associated with the P. obovata species.…”

Section: Discussionmentioning

confidence: 99%

“…According to the authors, Siberian spruce is characterized by its own set of species spe cific haplotypes of the intergenic spacer trnT trnF. These nucleotide sequences have been published recently (Volkova et al, 2014) and are currently avail able from the database GenBank (GenBank Acc. KF896139 and KF896142).…”

Section: Analysis Of the Polymorphism Of The Intergenic Spacer Trnt Tmentioning

confidence: 99%

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Analysis of the polymorphism of organelle DNA to elucidate the phylogeography of Norway spruce in the East European Plain

Potokina

Kiseleva

Nikolaeva

et al. 2015

Russ J Genet Appl Res

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The history of Norway spruce distribution in the East European Plain is discussed with regard to the results of the allele diversity survey of the mitochondrial Nad1 gene, which is maternally inherited, and the chloroplast trnT trnF region, which is paternally inherited in spruce. The polymorphism of organelle DNAs was examined in 221 genotypes from 28 regions of the former Soviet Union in geographical prove nances. Alleles common for the northern Picea abies lineage were detected in spruce trees from all the regions of the European part of Russia. The Nad1 allele typical of the southern lineage of P. abies was discovered just in spruces originating from Zakarpattia. The Nad1 allele species specific of P. obovata was found only in spruces from the Sverdlovsk (Ural) and Krasnoyarsk (Siberia) oblasts. Among the trees analyzed, some had chloroplast DNA sequences (trnT trnF) characteristic of P. abies, others carried cpDNA haplotypes specific of P. obovata. Analysis of polymorphism of organelle DNA allows revealing the hybrid nature of spruces resulting from the cross pollination of different species.

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Section: Discussionmentioning

confidence: 99%

Section: Analysis Of the Polymorphism Of The Intergenic Spacer Trnt Tmentioning

confidence: 99%

Analysis of the polymorphism of organelle DNA to elucidate the phylogeography of Norway spruce in the East European Plain

Potokina

Kiseleva

Nikolaeva

et al. 2015

Russ J Genet Appl Res

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“…Yet the phylogeny and history of the two species, as well as the exact limits of their respective ranges and their hybridization zone, remain poorly understood. Morphologically, the two species are distinguished by the length of the cone and the shape of the cone scales; Norway spruce cones tend to be larger, and cone scales are more pointed and sharper than those of Siberian spruce, but in both cases, the change in the traits is more gradual across the range than discrete (Schmidt-Vogt 1974;Popov 2003;Volkova et al 2014). An early study based on ten populations and 26 isozyme loci indicated the presence of a hybrid zone centred around the Urals, but the number of populations was clearly too small to delineate the extend of it (Krutovskii & Bergmann 1995).…”

Section: Introductionmentioning

confidence: 99%

The extent and meaning of hybridization and introgression between Siberian spruce (Picea obovata) and Norway spruce (Picea abies): cryptic refugia as stepping stones to the west?

et al. 2016

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Boreal species were repeatedly exposed to ice ages and went through cycles of contraction and expansion while sister species alternated periods of contact and isolation. The resulting genetic structure is consequently complex, and demographic inferences are intrinsically challenging. The range of Norway spruce (Picea abies) and Siberian spruce (Picea obovata) covers most of northern Eurasia; yet their geographical limits and histories remain poorly understood. To delineate the hybrid zone between the two species and reconstruct their joint demographic history, we analysed variation at nuclear SSR and mitochondrial DNA in 102 and 88 populations, respectively. The dynamics of the hybrid zone was analysed with approximate Bayesian computation (ABC) followed by posterior predictive structure plot reconstruction and the presence of barriers across the range tested with estimated effective migration surfaces. To estimate the divergence time between the two species, nuclear sequences from two well-separated populations of each species were analysed with ABC. Two main barriers divide the range of the two species: one corresponds to the hybrid zone between them, and the other separates the southern and northern domains of Norway spruce. The hybrid zone is centred on the Urals, but the genetic impact of Siberian spruce extends further west. The joint distribution of mitochondrial and nuclear variation indicates an introgression of mitochondrial DNA from Norway spruce into Siberian spruce. Overall, our data reveal a demographic history where the two species interacted frequently and where migrants originating from the Urals and the West Siberian Plain recolonized northern Russia and Scandinavia using scattered refugial populations of Norway spruce as stepping stones towards the west.

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“…Exact limits of the distribution ranges and taxonomic status of P. abies and P. obovata have been much debated since many diagnostic morphological traits of the two species are blurred by introgressive hybridization in their contact zones (cf., Tollefsrud et al, 2015;Tsuda et al, 2016). Intermediate morphological states are described either as clinal or geographic variation without taxonomic recognition (Schmidt-Vogt, 1977;Popov, 1996a;Volkova et al, 2014) or treated at intraspecific taxonomic level (Teplouchoff, 1868;Sukachev, 1928Sukachev, , 1938Lindquist, 1948;Jalas & Suominen, 1973;Schmidt-Vogt, 1974, 1977Hämet-Ahti et al, 1992;Tutin et al, 1993;Jonsell, 2000;Latałowa & Knaap, 2006 etc. ), or as hybrids P. fennica (Regel) Kom.…”

Section: Introductionmentioning

confidence: 99%

“…Alternative taxonomic treatment considers P. abies and P. obovata as infraspecific taxa of a single species (Schmidt-Vogt, 1977;Popov, 1996a;Volkova et al, 2014) based on a lack of morphological and genetic specificity of intermediate forms united under "P. fennica", as well as referring to continuous and adaptive nature of the clinal morphological variation in direction from West to East.…”

Section: Introductionmentioning

confidence: 99%

Systematics and distribution of spruce species in the North-West of Russia

Orlova¹,

Gussarova²,

Глазкова³

et al. 2020

Dendrobiology

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Norway spruce (Picea abies) and Siberian spruce (P. obovata) are among the most important forest-forming coniferous species in the boreal part of Eurasia. Despite numerous publications on the taxonomy of Norway spruce and closely related taxa (P. obovata Ledeb. and P. fennica (Regel) Kom.), the problem of their identification, as well as clarification of their taxonomic status, has not been solved so far. Species delimitation is particularly challenging when P. abies, P. obovata and P. fennica occur in sympatry. Our study aims to assess taxonomic value of proposed earlier and search for stable diagnostic characters of cones and their scales to distinguish Picea abies and its sympatric in the North-West of Russia P. fennica and P. obovata. In addition, we analyzed and updated information on geographical distribution and phytocenotic characteristics of the above-mentioned species in the North-West of the European part of Russia. We examined herbarium specimens and cones sampled from 88 trees from 22 Picea stands located throughout the study region. Each tree was represented on average by 5 cones, in total 415 cones were analyzed. Morphometric analyses included 16 morphological characters of cones and their scales selected based on our own observations and published data. Multivariate comparison had shown a large overlap between P. obovata and P. fennica, while individuals of P. abies formed a separate and less overlapping cluster. Among the six qualitative (discrete) characters, shape of seed scale and shape of its upper margin have non-overlapping frequency distributions and can separate P. abies and P. obovata. Several new diagnostic characters are proposed: morphology and size of bract scales and ratio of the size of seed scales and bract scales. Phytocenotic analysis showed that different spruce taxa occupy specific habitats, which in their turn connected with the latitudinal gradient: in normally drained habitats, Picea obovata is found mainly in poor shrubby-green-mossy forests, which are typical of the northern and middle parts of the Northern taiga; Picea abies – in richer green-mossy habitats (Vaccinioso-hylocomiosum, Oxalidoso-hylocomiosum, Hylocomiosum), which begin to occur already from the middle part of the Northern taiga. Picea fennica occupies both habitats.

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In search of hybridity: the case of Karelian spruces

Cited by 6 publications

References 20 publications

Analysis of the polymorphism of organelle DNA to elucidate the phylogeography of Norway spruce in the East European Plain

Analysis of the polymorphism of organelle DNA to elucidate the phylogeography of Norway spruce in the East European Plain

The extent and meaning of hybridization and introgression between Siberian spruce (Picea obovata) and Norway spruce (Picea abies): cryptic refugia as stepping stones to the west?

Systematics and distribution of spruce species in the North-West of Russia

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