The origin and genetic variability of vegetatively propagated clones identified from old planted trees and plantations of Thujopsis dolabrata var. hondae in Ishikawa Prefecture, Japan

Ikeda, Torazo; Mishima, Kentaro; Takata, Kanenori; Tomaru, Nobuhiro

doi:10.1007/s11295-019-1391-0

Cited by 4 publications

(4 citation statements)

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“…A significant and relatively high value of overall population differentiation was found among the populations we examined (Table A2; F ST = 0.105, p < 0.001; R ST = 0.096, p < 0.001; G ST = 0.088, p < 0.001; G' ST = 0.246, p < 0.001). These values were clearly greater than those obtained in Ikeda et al [12] (F ST = 0.039; G' ST = 0.114; EST-SSR). Katsuki et al [43] reanalyzed and summarized the measures of population differentiation for major conifers distributed in the Japanese Archipelago, including Cryptomeria japonica (F ST , 0.028; R ST , 0.032; G' ST , 0.125; SSR; [41]), Chamaecyparis obtusa (F ST = 0.039; G ST = 0.040; G' ST = 0.188; SSR; [4]), Picea alcoquiana (F ST = 0.071; G' ST = 0.164; SSR; [44]), and Picea jezoensis (F ST = 0.101; SSR; [45]).…”

Section: Genetic Diversity At Est-ssr In Thujopsiscontrasting

confidence: 74%

“…The two populations that were located in the marginal part of the Th distribution region and the five populations in the northern part of the distribution region were genetically different in the neighbor-joining tree and structure analysis [11]. Ikeda et al [12] also analyzed the genetic structure of natural forests using populations distributed over almost the same geographical area as studied by Higuchi et al [11]. They suggested that the distribution area of Th included four regional groups (Hokkaido and Aomori prefectures, Iwate and Yamagata prefectures, Niigata, and Ishikawa prefectures) of natural populations [12].…”

Section: Introductionmentioning

confidence: 99%

“…Ikeda et al [12] also analyzed the genetic structure of natural forests using populations distributed over almost the same geographical area as studied by Higuchi et al [11]. They suggested that the distribution area of Th included four regional groups (Hokkaido and Aomori prefectures, Iwate and Yamagata prefectures, Niigata, and Ishikawa prefectures) of natural populations [12]. These findings are important for illustrating the genetic structure of Th; however, they did not include Td populations.…”

Section: Introductionmentioning

confidence: 99%

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Genetic Diversity and Structure of Japanese Endemic Genus Thujopsis (Cupressaceae) Using EST-SSR Markers

Inanaga

Hasegawa

Mishima

et al. 2020

Forests

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The genus Thujopsis (Cupressaceae) comprises monoecious coniferous trees endemic to Japan. This genus includes two varieties: Thujopsis dolabrata (L.f.) Siebold et Zucc. var. dolabrata (southern variety, Td) and Thujopsis dolabrata (L.f.) Siebold et Zucc. var. hondae Makino (northern variety, Th). The aim of this study is to understand the phylogeographic and genetic population relationships of the genus Thujopsis for the conservation of genetic resources and future breeding. A total of 609 trees from 22 populations were sampled, including six populations from the Td distribution range and 16 populations from the Th distribution range. The genotyping results for 19 expressed sequence tag (EST)-based simple sequence repeat (SSR) markers, followed by a structure analysis, neighbor-joining tree creation, an analysis of molecular variance (AMOVA), and hierarchical F statistics, supported the existence of two genetic clusters related to the distribution regions of the Td and Th varieties. The two variants, Td and Th, could be defined by their provenance, in spite of the ambiguous morphological differences between the varieties. The distribution ranges of both variants, which have been defined from their morphology, was confirmed by genetic analysis. The Th populations exhibited relatively uniform genetic diversity, most likely because Th refugia in the glacial period were scattered throughout their current distribution area. On the other hand, there was a tendency for Td’s genetic diversity to decrease from central to southern Honshu island. Notably, the structure analysis and neighbor-joining tree suggest the hybridization of the two varieties in the contact zone. More detailed studies of the genetic structure of Td are required in future analyses.

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Section: Genetic Diversity At Est-ssr In Thujopsiscontrasting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Genetic Diversity and Structure of Japanese Endemic Genus Thujopsis (Cupressaceae) Using EST-SSR Markers

Inanaga

Hasegawa

Mishima

et al. 2020

Forests

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“…To assess the relationship structure within the detected age classes of the Nagycenk group (old vs young individuals), we employed the ML-Relate software (Kalinowski et al 2006). This approach was used to determine whether the old individuals were related to the younger trees, similarly to Ikeda et al (2019). First, we calculated the pairwise relatedness coefficient using a maximum likelihood approach for all individuals (r, the fraction of alleles identical by descent shared by individuals; Blouin 2003).…”

Section: Diversity Estimatesmentioning

confidence: 99%

Genetic diversity in a historic lime tree allée of Széchenyi Castle in Nagycenk, Hungary

Tóth

Szilágyi

Patyi

et al. 2022

Genet Resour Crop Evol

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Trees are key components of historic gardens and are valuable sources of genetic diversity that need preservation to enrich native populations’ genetic basis in order to enhance long-term viability, and facilitate the species’ adaptation to changing climatic and environmental conditions. The primary objective of our study was to assess the genetic diversity, structure and relationships of the Tilia cordata Mill. allée at Széchenyi Castle in Nagycenk (UNESCO heritage site), Hungary, to infer the late-Baroque garden’s rich genetic heritage and conservation importance. The small leaved lime individuals at Nagycenk, with an age of 200 years, maintained high genetic diversity with non-significant inbreeding and high allelic richness and number of private alleles. Genetic diversity was similar to Central European natural populations and slightly higher compared to other plant collections, e.g. Eszterházy Castle garden at Fertőd. The surveyed trees exhibited two age groups unrelated with shallow genetic differentiation indicating the potential seed source origin from the local geographic area. Bayesian clustering of individuals showed significant differences from the individuals growing at Fertőd-Esterházy gardens (approx. in a 15 km distance) and other T. cordata cultivars. We concluded that the T. cordata collection of Nagycenk is a unique genetic heritage of the former natural vegetation due to its genetic variability and divergence, which would be a valuable source of future breeding programs and conservation.

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Genetic diversity and population structure analysis of Franklinia alatamaha, a tree species existing only in cultivation

Gladfelter

Yadav

Merkle

et al. 2020

Tree Genetics & Genomes

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The origin and genetic variability of vegetatively propagated clones identified from old planted trees and plantations of Thujopsis dolabrata var. hondae in Ishikawa Prefecture, Japan

Cited by 4 publications

References 34 publications

Genetic Diversity and Structure of Japanese Endemic Genus Thujopsis (Cupressaceae) Using EST-SSR Markers

Genetic Diversity and Structure of Japanese Endemic Genus Thujopsis (Cupressaceae) Using EST-SSR Markers

Genetic diversity in a historic lime tree allée of Széchenyi Castle in Nagycenk, Hungary

Genetic diversity and population structure analysis of Franklinia alatamaha, a tree species existing only in cultivation

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