A5019997846- Plant and animal studies
- Plant Diversity and Evolution
- Genetic diversity and population structure
- Plant and Fungal Species Descriptions
- Plant Taxonomy and Phylogenetics
- Fern and Epiphyte Biology
- Plant Reproductive Biology
- Plant Parasitism and Resistance
- Genomics and Phylogenetic Studies
- Plant Molecular Biology Research
- Botany and Plant Ecology Studies
- Chromosomal and Genetic Variations
- Forest Insect Ecology and Management
- Plant Pathogens and Fungal Diseases
- Ecology and Conservation Studies
- Coleoptera Taxonomy and Distribution
- Ecology and Vegetation Dynamics Studies
- Biological Control of Invasive Species
- Sesquiterpenes and Asteraceae Studies
- Insect-Plant Interactions and Control
- Botany, Ecology, and Taxonomy Studies
- Protist diversity and phylogeny
- Legume Nitrogen Fixing Symbiosis
- Species Distribution and Climate Change
- Aquatic Ecosystems and Phytoplankton Dynamics
The University of Tokyo
2016-2025
Tokyo University of the Arts
2015-2025
Tokyo Metropolitan Komaba High School
2017-2024
Tokyo Metropolitan University
1989-2024
Hokkaido University
2024
University of Hyogo
2024
Osaka Metropolitan University
2024
Akita Prefectural University
2024
Tohoku University
2024
Osaka City University
2021
Abstract DNA barcoding is a technique for identifying organisms based on short, standardized fragment of genomic DNA. The sequence region called barcode because it like tag each taxon. Since the proposition this concept and launch large project named Barcode Life, simple has attracted attention from taxonomists, ecologists, conservation biologists, agriculturists, plant‐quarantine officers others, number studies using rapidly increased. extreme diversity insects their economical,...
We analyzed nucleotide variation in rbcL (the gene encoding the large subunit of ribulose 1,5-bisphosphate carboxylase/oxygenase] from 99 genera leptosporangiate ferns representing 31 33 extant families.Phylogenetic relationships were inferred using three methods: neighbor joining, maximum parsimony, and likelihood.All methods resulted optimal trees that similar.Within context those taxa examined, these suggest that: l) Polypodiaceae, Grammitidaceae Pleiirosoriopsis form a monophyletic group...
Stem cells are formed at particular times and positions during the development of multicellular organisms. Whereas flowering plants form stem only in sporophyte generation, non-seed both gametophyte generations. Although molecular mechanisms underlying cell formation generation have been extensively studied, a few transcription factors involved regulation reported. The moss Physcomitrella patens forms hypha-like body (protonema) shoot-like (gametophore) from protonema apical gametophore...
Background DNA barcoding is expected to be an effective identification tool for organisms with heteromorphic generations such as pteridophytes, which possess a morphologically simple gametophyte generation. Although reference data set including complete coverage of the target local flora/fauna necessary accurate identification, barcode studies rich taxonomic sampling on countrywide scale are lacking. Methodology/Principal Findings The Japanese pteridophyte flora (733 taxa subspecies and...
Urban green spaces play an important role in maintaining urban biodiversity the Tokyo Metropolis, Japan. Plant-dependent insect assemblages such as Cerambycidae, particular, are likely influenced by existence of Tokyo's urbanised environments. This study is first comprehensive inventory cerambycid fauna Komaba Campus University Tokyo. A assemblage composed a total 25 species was recorded within site and compared to nine other distributed throughout The results indicated that number campus...
The Heteroptera, or true bugs, forms one of the major insect groups with respect to very diverse habitat preferences, including both aquatic and terrestrial species, as well a variety feeding types. first comprehensive inventory Heteroptera at Komaba Campus University Tokyo, an urban green space in center Tokyo Metropolis, Japan, was conducted.A total 115 species 29 families suborder were identified. area had high richness compared other urbanized suburbanized localities Tokyo. campus is...
Abstract While many plant species are considered threatened under anthropogenic pressure, it remains uncertain how rapidly we losing diversity. To fill this gap, propose a Global Legume Diversity Assessment (GLDA) as the first step of global diversity assessment. Here describe concept GLDA and its feasibility by reviewing relevant approaches data availability. We conclude that Fabaceae is good proxy for overall angiosperm in habitats much available. As indicators states, comparison richness...
A new classification of Hymenophyllaceae, consisting nine genera (Hymenophyllum, Didymoglossum, Crepidomanes, Polyphlebium, Vandenboschia, Abrodictyum, Trichomanes, Cephalomanes and Callistopteris) is proposed.Every genus, subgenus section chiefly corresponds to the monophyletic group elucidated in molecular phylogenetic analyses based on chloroplast sequences.Brief descriptions keys higher taxa are given, their representative members enumerated, including some combinations.
The MADS-box genes of land plants are extensively diverged to form a superfamily and important in various aspects development including the specification floral organs as homeotic selector genes. closest relatives freshwater green algae charophyceans. To study origin evolution plant genes, we characterized these three charophycean algae: stonewort Chara globularis , coleochaete Coleochaete scutata desmid Closterium peracerosum–strigosum–littorale complex. Phylogenetic analyses suggested that...
SUMMARY The shoot is a repeated structure made up of stems and leaves the basic body plan in land plants. Vascular plants form diploid generation, whereas nonvascular such as mosses haploid generation. It not clear whether all use similar molecular mechanisms development or how genetic networks for evolved. control auxin distribution, especially by polar transport, essential flowering We did detect transport gametophytic shoots several mosses, but it sporophytes without structure. Treatment...
ABSTRACT Symbiotic associations with midgut bacteria have been commonly found in diverse phytophagous heteropteran groups, where microbiological characterization of the symbiotic has restricted to stinkbug families Acanthosomatidae, Plataspidae, Pentatomidae, Alydidae, and Pyrrhocoridae. Here we investigated bacterial symbiont Cantao ocellatus , a family Scutelleridae. A specific gammaproteobacterium was consistently identified from insects different geographic origins. The bacterium...
Adaptive divergence at the microgeographic scale has been generally disregarded because high gene flow is expected to disrupt local adaptation. Yet, growing number of studies reporting adaptive a small spatial highlight importance this process in evolutionary biology. To investigate genetic basis adaptation, we conducted genome-wide scan among sets continuously distributed populations Arabidopsis halleri subsp. gemmifera that show altitudinal phenotypic despite flow. Genomic comparisons were...
Species complexes consisting of ill-defined "species" are widely known among ferns, and their involvement with reticulate evolution is expected. Nevertheless approaches to reticulation history DNA markers not yet commonly adopted. We have successfully elucidated the biological status Vandenboschia radicans complex in East Asian islands by combining analyses ploidy level, a cpDNA marker (rbcL), nuclear (GapCp). The results based on 266 individuals collected from 174 localities throughout...
Loss of genetic diversity is known to decrease the fitness species and a critical factor that increases extinction risk. However, there little evidence for higher vulnerability risk in endangered based on genomic differences between non-endangered species. This true even case functional loci, which are more likely relate than neutral loci. Here, we compared genome-wide diversity, proportion duplicated genes (
Background Heterophyllous aquatic plants show marked phenotypic plasticity. They adapt to environmental changes by producing different leaf types: submerged, floating and terrestrial leaves. By contrast, homophyllous produce only submerged leaves grow entirely underwater. Heterophylly homophylly evolved under selective pressure modifying the species-specific optima for photosynthesis, but little is known about evolutionary outcome of habit. Recent analyses suggested that rbcL, a chloroplast...
Although many α- and some β-proteobacterial species are symbiotic with legumes, the evolutionary origin of nitrogen-fixing nodulation remains unclear. We examined β-proteobacteria whose genomes were sequenced using large-scale phylogenetic profiling revealed two genes. These genes, nodI nodJ (nodIJ), play key roles in secretion Nod factors, which recognized by legumes during nodulation. found that only nodulating β-proteobacteria, including novel strains isolated this study, possess both...