Tao Fujiwara- Ph.D
- Lectuer at Showa University
Tao Fujiwara
- Ph.D
- Lectuer at Showa University
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25
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Publications (25)
Among the lineages of the tree of life, land plants exhibit a remarkably high genomic disparity because of their distinct evolutionary trajectories in the phylogenetic history of their major lineages. The macroevolutionary pattern of genomic evolution has been mainly investigated to obtain insights into well‐studied lineages such as angiosperms, bu...
The phylogeography of four, native species of trees in Sundaland, Campnosperma auriculatum, Pometia pinnata, Polyscias diversifolia, and Trema orientalis, was compared. MaxEnt v.3.4.1, was used to determine their potential distribution. The AUC values ranged from 0.871–0.885. Ground sampling of 699 individuals throughout the study area was conducte...
A new species of the firmoss from China, Huperzia crassifolia sp. nov., is described and illustrated based on morphological characters and molecular evidence. The new species resembles species associated with the H. javanica complex, in particular H. javanica based on leaf shape and serrations, but can be easily distinguished by elliptic lanceolate...
The fern independent gametophytes that can maintain populations by vegetative reproduction without conspecific sporophytes have been considered an unusual phenomenon found in some epiphytic or epilithic species of Hymenophyllaceae, Pteridaceae, Lomariopsidaceae, and Polypodiaceae. By chance, the discovery of mysterious strap-like gametophytes on Iz...
Hymenophyllum pilosissimum C. Chr. (Hymenophyllaceae), recently discovered on Iriomote Island, is reported for the first time in Japan.
Allopolyploidization often leads to disruptive conflicts among more than two sets of subgenomes, leading to genomic modifications and changes in gene expression. Although the evolutionary trajectories of subgenomes in allopolyploids have been studied intensely in angiosperms, the dynamics of subgenome evolution remain poorly understood in ferns, de...
Haplopteris mediosora (Hayata) X. C. Zhang (Pteridaceae), a fern with linear simple fronds is widely distributed at high elevations from the Himalayas through China, the Philippines and Taiwan to Japan. In Japan, sporophytes of H. mediosora were recorded only from Azusa-shiraiwa, a mountain of Okuchichibu region, and have not been seen for over 50...
Leptochilus ornithopus T. Fujiw. & B.H. Quang (Polypodiaceae, Polypodiales) is described as a new species, based on integrated evidence from phylogenetic and morphological examinations. The new species is most similar to L. digitatus and L. longipes but distinguished from both by its having ovate rhizome scales, narrowly cuneate and gradually reduc...
Lepisorus rufofuscus T. Fujiw. (Polypodiaceae, Polypodiales), a Japanese species previously treated as L. angustus Ching, is described as new based on integrated evidence from phylogenetics, cytology, and morphology. It is morphologically segregated from L. angustus by the broadly lanceolate or ovatelanceolate rhizome scales and the ovate leaf scal...
Premise of the study:
The successful establishment of polyploid species is hypothesized to be promoted by niche differentiation from the parental species, or by range shifts during climate oscillations. However, few studies have considered both causes simultaneously. Here we resolve the origin of a tetraploid fern, Lepisorus yamaokae, and explore...
A new species of the species-rich fern genus Lepisorus (Polypodiales, Polypodiaceae) has been found to occur in Shan state, Myanmar. Lepisorus medioximus is described based on morphological characters and phylogenetic evidence. Phylogenetic analyses showed that the specimens of L. medioximus formed a distinct clade nested in the Pseudovittaria clad...
The genus Thylacopteris is a small, phylogenetically isolated genus belonging to the fern family Polypodiaceae. This study describes a new species, Thylacopteris minuta , based on collections obtained during field surveys of Shan State, Myanmar. This new species is distinct from other species of Thylacopteris in its small size and presence of scler...
Phegopteris decursivepinnata harbors diploid and tetraploid strains, forming a polyploid species complex together with P. koreana. Hybridization and polyploidization in the complex blur species boundaries, making it challenging to apply the proper taxonomic treatment. Ploidy determinations, phylogenetic analyses, and morphological investigations to...
Background and Aims
The dynamics of genome evolution caused by whole genome duplications and other processes are hypothesized to shape the diversification of plants and thus contribute to the astonishing variation in species richness among the main lineages of land plants. Ferns, the second most species rich lineages of land plants are highly suita...
The northern parts of Yunnan belong to ‘Mountains of SW China’ biodiversity hot spot, one of the most species-rich areas on earth. Although some progress, relatively little attention has been given to explore the evolutionary history of the fern diversity of this hot spot. According to recent progress, Yunnan exhibits the heterogeneity of species d...
Although polyploidy is pervasive and its evolutionary significance has been recognized, it remains unclear how newly formed polyploid species become established. In particular, the impact of multiple origins on genetic differentiation among populations of a polyploid species and whether lineages of independent origins have different evolutionary po...
Asplenium serratipinnae (Aspleniaceae: Polypodiales), an allotetraploid species between the diploid race of A. normale and A. oligophlebium is described as new. It is endemic to Japan and morphologically most similar to A. normale, but differs in having narrower pinnae with an auriculate to hastate acroscopic base and deeply serrated margins.
In the original publication of the article, one of the author names, "Tao Fuijwara" was published incorrectly. The correct name is Tao Fujiwara.
The Chinese occurrences of the marattioid fern genus Christensenia have been considered as requiring protection because of its extreme rarity and very small population size. Here, we explored different biological aspects to enable protection of these rare ferns, well known as Mesozoic living fossils. Firstly, we documented the cytology of the Chine...
The Japanese Lepisorus thunbergianus complex contains diploid and tetraploid races of L. thunbergianus and a hexaploid species, L. mikawanus. Here, we performed molecular phylogenetic analysis on this complex to delimit species and to elucidate the evolutionary origins of tetraploid and hexaploid species. Chloroplast DNA (cpDNA) phylogeny supported...
Premise of the study:
Delimitation of cryptic species provides an understanding of biodiversity and opportunities to elucidate speciation processes. Extensive flavonoid variation has been reported in the tetraploid cytotype of the fern, Asplenium normale, although related species have no intraspecific variations in flavonoid composition. We hypoth...
New flavone glycoside, genkwanin 4´-O-β-glucopyranosyl-(1→2)-O-α-rhamnopyranoside was isolated from the fronds of new chemotype of Asplenium normale D.Don, together with two known C-glycosylflavones, vicenin-2 and lucenin-2. The chemical structure of the isolated glycoside was established by UV, LC-MS, characterization of acid hydrolysates, and 1H...
