Understanding the factors controlling expression of longevity in trees is still an outstanding challenge for tree biologists and forest ecologists. We gathered tree-ring data literature broadleaf deciduous (BD) temperate growing closed-canopy old-growth forests Northern Hemisphere to explore role geographic patterns, climate variability, growth rates on longevity. Our pan-continental analysis, covering 32 species from 12 genera, showed that 300-400 years can be considered a baseline...

Abstract Range‐wide genetic variation of the widespread cold‐temperate spruce Picea jezoensis was studied throughout northeast Asia using maternally inherited mitochondrial DNA and paternally chloroplast markers. This study assessed 33 natural populations including three varieties species in Japan, Russia, China, South Korea. We depicted sharp suture zones straits around Japan geographical distribution pattern haplotypes ( G ST = 0.901; N 0.934). In contrast, we detected possible extensive...

Presented is the new kindred with autosomal dominant cerebellar ataxia linked to chromosome 16q22.1 (16q-ADCA type III) associated progressive hearing loss. By haplotype analysis, critical interval was slightly narrowed three megabase regions between GATA01 and D16S3095. Neuropathologic study of 16q-ADCA III demonstrated characteristic shrinkage Purkinje cell bodies surrounded by synaptophysin-immunoreactive amorphous material containing calbindin- ubiquitin-positive granules.

Abstract Aim We used microsatellite markers to determine the range‐wide genetic structure of Picea jezoensis and test hypothesis that past population history this widespread cold‐temperate spruce has resulted in a low level variation imprints inbreeding bottlenecks isolated marginal populations. Location The natural range three infraspecific taxa P. throughout north‐east Asia, including Methods analysed total 990 individuals across 33 populations using four nuclear loci. Population was...

Research Highlights: We detected the longitudinal gradients of genetic diversity parameters, such as number alleles, effective heterozygosity, and inbreeding coefficient, found that these might be attributable to climatic conditions, temperature snow depth. Background Objectives: Genetic among local populations a plant species at its distributional margin has long been interest in ecological genetics. Populations distribution center grow well favorable but those range margins are exposed...

This paper reports the results of a full year (2000) measurements CO2 flux at successional forest mature birch and growing oak with Sasa-bamboo in Sapporo, Japan. Eddy covariance fluxes were obtained using closed-path infrared gas analyzer. Changes storage under eddy-flux measurement level quantified vertical profiles concentration. Seasonal variations net exchange between atmosphere are discussed terms both phenological developments canopy micrometeorological variables. To estimate annual...

Abstract Sub‐alpine Abies veitchii and A . homolepis are distributed in the central part of Honshu Island, Japan, their habitats segregated vertically. These species sometimes form a mixed forest overlapping area two species, that is, upper limit habitat lower have been considered to be distantly related because they were classified into different sections by most conventional classifications. No natural hybridization has reported between species. The aim this study was demonstrate, through...

Abstract Dryobalanops aromatica is an emergent canopy tree species with hermaphroditic bee‐pollinated flowers. This distributed in the lowland dipterocarp forests of Malaya, Sumatra, Rhio Archipelago and Borneo. The flowering many different was observed some parts Brunei 1991, all over 1992. outcrossing rates D, were estimated 1991 1992 secondary forest, primary forest. Selective harvesting D. has occurred forest about 20 years ago. Four enzyme systems a total six isozyme loci used to...

Societal Impact Statement The iconic Yoshino cherry tree in Japan is experiencing shifts its blossom timing due to climate warming. To develop a genetically informed predictive model for bud dormancy release, we examined seasonal gene expression trees at three different locations. Our experiments, coupled with the analysis of DORMANCY‐ASSOCIATED MADS‐box ( DAM ) genes, highlighted DAM4 as most reliable indicator rate release. study demonstrated that profiles serve valuable forecasting...

Conifers in northern forests, such as fir and spruce, preferably regenerate on coarse woody debris, including fallen logs, stumps, snags. In Japan, the sub-boreal conifer species Picea jezoensis is completely dependent debris for seedling establishment. To understand fine-scale spatial genetic structure (FSGS) of this species, a 5-ha plot was established central Hokkaido, 531 individual trees were categorized into four life-stages (seedling, sapling, juvenile, mature) basis age size. The...

This paper reports the results of a full year (2000) measurements CO2 flux at successional forest mature birch and growing oak with Sasa-bamboo in Sapporo, Japan. Eddy covariance fluxes were obtained using closed-path infrared gas analyzer. Changes storage under eddy-flux measurement level quantified vertical profiles concentration. Seasonal variations net exchange between atmosphere are discussed terms both phenological developments canopy micrometeorological variables. To estimate annual...

Ten polymorphic microsatellite markers were isolated from the dwarf bamboo species Sasa cernua and kurilensis. The applicability of these was confirmed by genotyping open-pollinated seeds leaf samples natural populations. Genotypes each culm shared at least one allele maternal parent without contradiction. All 10 loci in S. with 2-15 alleles (average H(E) = 0.532). Eight kurilensis 2-10 These will be useful detailing extent clonal sexual reproduction species.

Abstract The demographic genetic substructuring of local Fagus crenata populations at Ogawa Forest Preserve, Ibaraki Prefecture, central Honshu, Japan, was analyzed by means parameters and markers using protein polymorphisms (allozymes). All individuals, including seedlings, various sizes juveniles, adult trees within two transects were mapped; size‐class structures based on DBH DGH measurements, their genotypes determined for 11 different allozyme loci (a total 46 alleles), i.e., Aap1 (3...

Abstract We investigated chronological changes in allozyme diversities Fagus crenata populations by means of size‐class discriminations, using variations two transects established a mixed beech‐oak forest the Ogawa Forest Preserve. All individuals within were divided into six size‐classes based on their diameters: class 0, seedlings; 1, juveniles <5 mm; 2, 5 < 10 3, <25 4, 25< <600 5, 600 mm <mature. Relationships between size (DBH or DGH) and age suppressed estimated. Most...

Research highlights: Using 10-year tree height data obtained after planting from the range-wide provenance trials of Abies sachalinensis, we constructed multivariate random forests (MRF), a machine learning algorithm, with climatic variables. The MRF enabled prediction optimum seed source to achieve good performance in terms growth at every site on fine scale. Background and objectives: Because forest species are adapted local environment, seeds empirically considered as best sources for...

Abstract: The amount and distribution of mitochondrial (mt) DNA restriction fragment length polymorphism was determined among individual tree samples two Japanese beech species, Fagus crenata F.japonica . Individual plants were collected from 16 F. populations throughout the range three japonica populations. We detected enough variation to characterize eleven chondriome types in , respectively. grouping based upon cladistic analysis mtDNA allowed us recognize apparent geographical patterns...

Abstract In this paper we first mathematically formulate spatial genetic models that rely on dispersal kernels, using the inhomogeneous Poisson process. On basis of mapped and genotyped data pertaining to adult juvenile trees are able estimate three fundamental variables population dynamics: individual female reproductive success, seed dispersal, pollen flow. The model was applied a secondary Fagus crenata stand in northern Japan, regenerated after shelterwood harvesting. Highly polymorphic...

Abstract The demographic genetic structure of a metapopulation the Japanese beech ( Fagus crenata Blume) in Ogawa Forest Preserve was analyzed using allozyme variabilities as markers. A total 138 mature trees an area 30 ha were first mapped; their DBH measured and leaf samples collected genotyped. 38 multilocus genotypes combination six loci 22 alleles detected. Spatial analyses, Moran's I coancestry R ij ) showed there no conspicuous pattern associations between similarities individual...

Abstract The genetic variation of Fagus multinervis Nakai (Fagaceae), which is endemic to Ullung Island, South Korea, was investigated using allozyme polymorphisms as a marker. A total 1074 individuals collected from five populations were analyzed and the levels diversity compared those japonica crenata distributed in Japan. percentages polymorphic loci number alleles per locus F. similar other beech species long‐lived woody species. However, heterozygosities both direct counts...