43 Result(s)
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Article
Jun Yokoyama
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Article
Open AccessEstimating bee distributions and their functional range to map important areas for protecting bee species and their functions
The decline of wild bee populations causes the decline of bee-pollinated plant populations through the deterioration of pollination services. Since high bee species richness generally involves high functional ...
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Open AccessDeep learning increases the availability of organism photographs taken by citizens in citizen science programs
Citizen science programs using organism photographs have become popular, but there are two problems related to photographs. One problem is the low quality of photographs. It is laborious to identify species in...
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Open AccessCorrection to: Assessment of Polygala paniculata (Polygalaceae) characteristics for evolutionary studies of legume–rhizobia symbiosis
A correction to this paper has been published: https://doi.org/10.1007/s10265-021-01295-3
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Open AccessEstimating possible bumblebee range shifts in response to climate and land cover changes
Wild bee decline has been reported worldwide. Some bumblebee species (Bombus spp.) have declined in Europe and North America, and their ranges have shrunk due to climate and land cover changes. In countries with ...
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Open AccessAssessment of Polygala paniculata (Polygalaceae) characteristics for evolutionary studies of legume–rhizobia symbiosis
Root nodule (RN) symbiosis is a mutualistic interaction observed between nitrogen-fixing soil bacteria and nodulating plants, which are scattered in only four orders of angiosperms called nitrogen-fixing clade...
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Open AccessUtilization of photographs taken by citizens for estimating bumblebee distributions
Citizen science is a powerful tool for collecting large volumes of observational data on various species. These data are used to estimate distributions using environmental factors with Species Distribution Mod...
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The tiny-leaved orchid Cephalanthera subaphylla obtains most of its carbon via mycoheterotrophy
The evolution of mycoheterotrophy has been accompanied by extreme reductions in plant leaf size and photosynthetic capacity. Partially mycoheterotrophic plants, which obtain carbon from both photosynthesis and...
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Open AccessMorvan’s syndrome and myasthenia gravis related to familial Mediterranean fever gene mutations
We present the first case of Morvan’s syndrome (MoS) and myasthenia gravis (MG) related to familial Mediterranean fever (FMF) gene mutations.
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Open AccessStable isotope labeling strategy based on coding theory
We describe a strategy for stable isotope-aided protein nuclear magnetic resonance (NMR) analysis, called stable isotope encoding. The basic idea of this strategy is that amino-acid selective labeling can be ...
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Stable isotope labeling of glycoprotein expressed in silkworms using immunoglobulin G as a test molecule
Silkworms serve as promising bioreactors for the production of recombinant proteins, including glycoproteins and membrane proteins, for structural and functional protein analyses. However, lack of methodology...
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Production and characterization of interspecific hybrids between Asparagus kiusianus Makino and A. officinalis L.
Interspecific hybridization is a useful technique to introduce characteristics from wild species into crops. Garden asparagus (Asparagus officinalis, 2n = 2x = 20) is an economically important vegetable that is n...
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Open AccessThe long-term consequences of hybridization between the two Daphnia species, D. galeata and D. dentifera, in mature habitats
Ecological specializations such as antipredator defense can reinforce morphological and distributional divergence within hybridizing species. Two hybridizing species of Daphnia (D. galeata and D. dentifera) are d...
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Expression analysis of an APETALA1/FRUITFULL-like gene in Phalaenopsis sp. ‘Hatsuyuki’ (Orchidaceae)
Members of the APETALA1 (AP1)/FRUITFULL (FUL)-like gene family of MADS-box genes play important roles in controlling the development of floral organs. To understand the molecular mechanisms of floral development ...
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Phenotypic and genetic differences in a perennial herb across a natural gradient of CO2 concentration
The atmospheric CO2 concentration [CO2] has been increasing markedly since the industrial revolution and is predicted to reach 500–1,000 μmol mol−1 by the end of this century. Although the short-term and acclimat...
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Open AccessThe MC1R gene in the guppy (Poecilia reticulata): Genotypic and phenotypic polymorphisms
The guppy (Poecilia reticulata) is an important model organism for studying sexual selection; male guppies have complex and conspicuous pigmentation, and female guppies exhibit preferences for males with specific...
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An economical method for producing stable-isotope labeled proteins by the E. coli cell-free system
Improvement of the cell-free protein synthesis system (CF) over the past decade have made it one of the most powerful protein production methods. The CF approach is especially useful for stable-isotope (SI) la...
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Environmental factors and land uses related to the naturalization of Bombus terrestris in Hokkaido, northern Japan
The buff-tailed bumblebee, Bombus terrestris, was introduced into Japan in 1991 and is now widely established in Hokkaido, northern Japan. To characterize environmental factors affecting the naturalization of B. ...
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Open AccessSize-dependent foraging gene expression and behavioral caste differentiation in Bombus ignitus
In eusocial hymenopteran insects, foraging genes, members of the cGMP-dependent protein kinase family, are considered to contribute to division of labor through behavioral caste differentiation. However, the rela...
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Genetic structure of island populations of the endangered bat Hipposideros turpis turpis: implications for conservation
Efforts for the conservation of the endangered bat species Hipposideros turpis turpis in southern Japan are hampered by a lack of information about its biology and natural history and by the increasing effect of ...
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Phylogenetic position of Oxygyne shinzatoi (Burmanniaceae) inferred from 18S rDNA sequences
