Language：English   Publishing type：Research paper (scientific journal)  

researchmap

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Japanese Society of Applied Entomology & Zoology  

Earlier studies have demonstrated that Paederia foetida L. (skunk vine) harbors larger numbers of phytoseiid mites for longer periods than any other wild plant in peach orchards. To assess the effectiveness of P. foetida in spider mite control, first, longevity and fecundity of Tetranychus kanzawai Kishida were examined in the laboratory using P foetida and Phaseolus vulgaris L. as host plants. Results showed that all T. kanzawai larvae died without molting and that female adults laid few eggs on R. foetida. No such adverse effect on larvae or female adults was observed on P. vulgaris. Then, population surveys of spider mites and phytoseiid mites were conducted on peach trees with and without P foetida. Results showed that the presence of P foetida itself was inadequate to achieve decreased spider mite populations on peach leaves under any circumstances.

DOI： 10.1303/jjaez.2017.178

CiNii Article

CiNii Books

researchmap

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

To examine the utilization of plant food resources by the phytoseiid mite species Amblyseius eharai Amitai & Swirski, Euseius sojaensis (Ehara), and Neoseiulus californicus (McGregor) (Acarina: Phytoseiidae), we collected phytoseiid mites on peach leaves in Japanese peach orchards. Then, phytoseiid mite samples that had been estimated to contain a single phytoseiid mite species using quantitative sequencing were selected. Simultaneously, we surveyed pollen available for phytoseiid mites in peach orchards and selected Digitaria ciliaris (Retz.) Koeler (Poales: Poaceae), Eleusine indica (L.) Gaertn. (Poales: Poaceae), and Pinus densiflora Siebold & Zucc. (Pinales: Pinaceae) as pollen source plants. Subsequently, the internal transcribed spacer sequences of ribosomal genes or the non-coding region of the chloroplast DNA of the three plant species were amplified from phytoseiid mite samples using polymerase chain reaction. Results showed that phytoseiid mite species with different feeding habits use plant food sources, possibly pollens, of D. ciliaris and P. densiflora.

DOI： 10.1007/s13355-016-0429-0

CiNii Article

CiNii Books

researchmap

Other Link： http://link.springer.com/article/10.1007/s13355-016-0429-0/fulltext.html

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

Hydroxyapatite (HAP) is a main mineral constituent of bone and tooth and has an outstanding bio-compatibility. HAP is a possible sorbent for heavy metals in wastewater due to its high adsorption capacity and low water solubility. We developed a removal system of Sr-90 from aqueous solution by HAP column procedure. More than 90 % of Sr-90 was adsorbed and removed from the Sr-90 containing solution. Divalent cations, Ca2+, had little effect on the removal of Sr-90 up to a concentration of 1 mmol L-1. This clearly indicates that the HAP column technique is advantageous with respect to the capacity to adsorb Sr-90 from water present in the environment.

DOI： 10.1007/s10967-015-4228-9

CiNii Article

CiNii Books

researchmap

Other Link： http://link.springer.com/article/10.1007/s10967-015-4228-9/fulltext.html

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

A population survey of phytoseiid mites and spider mites was conducted on peach leaves and wild plants in Japanese peach orchards having different pesticide practices. The phytoseiid mite species composition on peach leaves and wild plants, as estimated using quantitative sequencing, changed during the survey period. Moreover, it varied among study sites. The phytoseiid mite species compositions were similar between peach leaves and some wild plants, such as Veronica persica, Paederia foetida, Persicaria longiseta, and Oxalis corniculata with larger quantities of phytoseiid mites, especially after mid-summer. A PCR-based method to detect the ribosomal ITS sequences of Tetranychus kanzawai and Panonychus mori from phytoseiid mites was developed. Results showed that Euseius sojaensis (specialized pollen feeder/generalist predator) uses both spider mites as prey in the field.

DOI： 10.1007/s10493-014-9788-9

researchmap

Other Link： http://link.springer.com/article/10.1007/s10493-014-9788-9/fulltext.html

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

One year after the deposition of radionuclides from the Fukushima 1 Nuclear Power Plant (A formal name is Fukushima Daiichi Nuclear Power Station) in March 2011, radiocesium (Cs-134, Cs-137) concentrations ([Cs]) were comprehensively investigated in the wild plants of 99 species most of which were annual or summer green perennial herbs and started to grow from April 2012 at the heavily contaminated fields of paddy (three study sites) and upland (one study site) in Fukushima Prefecture. The survey was conducted three times (April, July and October) in the year. In each site, soils (soil cores of 5-cm depth) and plants (aerial shoots) were collected for determination of [Cs] on a dry weight basis, and then the transfer factor (TF) of radiocesium from soil to plant ([Cs](plant)/[Cs](soil)) was estimated in each species. The [Cs] values of both soils and plants largely varied. However, some species exhibited relatively high TF values (more than 0.4) (e.g., Athyrium yokoscense, Dryopteris tokyoensis, and Cyperus brevifolius), while others exhibited almost negligible values (less than 0.01) (e.g., Salix miyabeana, Humulus scandens, and Elymus tsukushiensis). In addition, judging from the 11 species grown in both paddy and upland fields, TF values were generally higher in the paddy fields. The estimation of phytoextraction efficiency of soil radiocesium by weed communities in the paddy fields suggests that the weed community is not a practical candidate for phytoremediation technique.

DOI： 10.1007/s10265-013-0605-z

researchmap

Other Link： http://link.springer.com/article/10.1007/s10265-013-0605-z/fulltext.html

Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

DOI： 10.1007/s13355-012-0153-3

researchmap

Other Link： http://link.springer.com/article/10.1007/s13355-012-0153-3/fulltext.html

Language：English   Publishing type：Research paper (scientific journal)  

researchmap

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：The Japanese Society of Applied Glycoscience  

DOI： 10.5458/jag.jag.jag-2012_006

CiNii Article

CiNii Books

researchmap

Language：English   Publishing type：Research paper (scientific journal)  

In order to reexamine the taxonomic coherence or Tofieldia nuda, which shows wide morphological variation within the species, we analysed sequences of plastid trnK, trnL, and trnL-F and nuclear ITS of T. nada and seven further species of Tofieldia. We found that T. nuda contains three different lineages supported with 99% or 100% bootstrap value: one lineage sister to T. coccinea (100%), one linage sister to the Chinese species T. divergens and T. thibetica (98%-100%), and a third lineage sister to the second lineage plus T. divergens and T. thibetica (99%-100%). As the wide morphological gaps among T. nuda, T. coccinea, T. divergens, and T. thibetica prevent us from considering them as conspecific with one another, the three lineages of T. nuda are regarded as different at the species level. The first lineage corresponds to T. nuda s.str., the second to T. furusei (formerly T. nuda var. furusei), and the third to T. yoshiiana, often considered a synonym of T. nuda. Tofieldia yoshiiana is further divided into three varieties, var. yoshiiana, var. kanwonensis comb. nov. and var. hyugaensis var. nov. A key to the three species and varieties is provided.

researchmap

Language：English   Publishing type：Research paper (scientific journal)  

In this study, we attempted a population survey of spiders in peach orchards with and without pesticide application; however, we had difficulty discriminating them. To identify spiders, we determined the nucleotide sequences of a ca. 640-bp region in the mitochondrial cytochrome oxidase subunit I (COI) gene from 17 species belonging to eight families. To identify five wolf spiders (Araneae: Lycosidae), which are the most abundant spiders in peach orchards in Okayama Prefecture, PCR and restriction fragment length polymorphism were developed on the basis of the COI gene sequences. Population survey results suggest that pesticide applications adversely affect spider populations in peach orchards.

DOI： 10.1007/s13355-010-0011-0

researchmap

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.18942/apg.KJ00006252743

researchmap

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.18942/apg.KJ00004899887

researchmap

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

The tribe Convallarieae, comprising 10 genera and 95 species, has recently been transferred from its own family to Ruscaceae sensu lato. In this study, sequence data from trnK and rbcL were analyzed for 19 species in 8 genera, and chromosome morphology was analyzed for 17 species in 7 genera. The parsimony analysis of trnK and rbcL sequences showed that Convallarieae are monophyletic. Although early branches did not receive strong bootstrap support, Convallaria diverged at the first branch, followed by Speirantha. The rest of the tribe was split into three, well-supported clades: one with Reineckea, the second with Campylandra and Rohdea, and the third with Tupistra, Tricalistra, and Aspidistra. Two monotypic genera, Rohdea and Tricalistra, were embedded in a clade of Campylandra and of Tupistra, respectively. Three karyotypes were distinguished in the tribe on the basis of the basic number and morphology of metaphase chromosomes: Convallaria type (with x = 19 and unimodal chromosome length), Tupistra type (with x = 19 and trimodal chromosome length), and Aspidistra-elatior type (with x = 18 and trimodal chromosome length). The character-state distribution in the molecular tree showed that the Convallaria type is plesiomorphic, from which was derived the Tupistra type and subsequently the Aspidistra-elatior type. Taxonomic treatments to transfer Campylandra to Rohdea and Tricalistra to Tupistra are also given.

DOI： 10.1007/s10265-004-0169-z

Scopus

PubMed

researchmap

Language：English   Publishing type：Research paper (scientific journal)  

Using matK and rbcL sequences (3,269 bp in total) from 113 genera of 45 families, we conducted a combined analysis to contribute to the understanding of major evolutionary relationships in the monocotyledons. Trees resulting from the parsimony analysis are similar to those generated by earlier single or multiple gene analyses, but their strict consensus tree provides much better resolution of relationships among major clades. We find that Acorus (Acorales) is a sister group to the rest of the monocots, which receives 100% bootstrap support. A clade comprising Alismatales is diverged as the next branch, followed successively by Petrosaviaceae, the Dioscoreales-Pandanales clade, Liliales, Asparagales and commelinoids. All of these clades are strongly supported (with more than 90% bootstrap support). The sister-group relationship is also strongly supported between Alismatales and the remaining monocots (except for Acorus) (100%), between Petrosaviaceae and the remaining monocots (except for Acorus and Alismatales) (100%), between the clade comprising Dioscoreales and Pandanales and the clade comprising Liliales, Asparagales and commelinoids (87%), and between Liliales and the Asparagales-commelinoids clade (89%). Only the sister-group relationship between Asparagales and commelinoids is weakly supported (68%). Results also support the inclusion of Petrosaviaceae in its own order Petrosaviales, Nartheciaceae in Dioscoreales and Hanguanaceae in Commelinales.

DOI： 10.1007/s10265-003-0133-3

Scopus

PubMed

researchmap

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.jas.2022.105656

researchmap

Publishing type：Research paper (scientific journal)   Publisher：Graduate School of Environmental Science, Okayama University  

DOI： 10.3107/jesss.9.1

researchmap

Language：English   Publisher：Japanese Society for Plant Systematics  

Heteropolygonatum xui and H. ogisui were karyologically investigated for the first time. H. xui was found to be diploid with 2n=32 and H. ogisui was tetraploid with 2n=64, a new count for the genus. At the present stage, all species of the genus except H. ginfushanicum, i.e. H. roseolum, H. pendulum, H. xui and H. ogisui, were karyologically revealed, and all of the four species have the same basic chromosome number of x=16. Accordingly, the genus Heteropolygonatum may be uniform in basic chromosome number. It is also confirmed that the basic chromosome number is one of the characters available for distinguishing Heteropolygonatum from Polygonatum.

DOI： 10.18942/bunruichiri.KJ00001077464

CiNii Article

CiNii Books

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

Language：Japanese  

CiNii Article

CiNii Books

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

researchmap

Type：Other

researchmap