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  • Shiba, Masayuki  (8)
  • Unknown  (8)
  • 1
    Online Resource
    Online Resource
    DataSheet_1.docx
    Frontiers Media SA ; 2023
    In:  Frontiers in Plant Science Vol. 14 ( 2023-6-29)
    Details
    In: Frontiers in Plant Science, Frontiers Media SA, Vol. 14 ( 2023-6-29)
    Abstract: Farfugium japonicum (L.) Kitam. var. japonicum grows mainly in the coastal areas of Japan. Meteorological recording data from natural habitats were used to investigate the factors associated with the laminas and petioles of radical leaves of F. japonicum var. japonicum to avoid or resist higher wind stress. Our morphological and mechanical results indicated that petiole length and petiole cross-sectional area had a weak correlation with wind speed and breaking strength, and the petiole second area moment of inertia did not differ significantly among populations. However, both lamina area and petiole length per petiole cross-sectional area decreased with increasing wind speed, indicating that F. japonicum var. japonicum resisted or avoided an increase in wind speed outdoors by reducing the lamina area and petiole length per petiole cross-sectional area without qualitative changes in their petioles. The results of this study indicated that densely distributed recording stations of the Automated Meteorological Data Acquisition System (AMeDAS) by the Japan Meteorological Agency can be used for environmental adaptation studies of plants in the field using nearby plant populations.
    Type of Medium: Online Resource
    ISSN: 1664-462X
    URL: Article
    URL: Article
    DOI: 10.3389/fpls.2023.1182266
    DOI: 10.3389/fpls.2023.1182266.s001
    Language: Unknown
    Publisher: Frontiers Media SA
    Publication Date: 2023
    detail.hit.zdb_id: 2687947-5
    detail.hit.zdb_id: 2613694-6
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  • 2
    Online Resource
    Online Resource
    Seed Germination and Seedling Emergence of Canavalia Lineata (Thunb.) DC. (Fabaceae)
    Canadian Center of Science and Education ; 2022
    In:  International Journal of Biology Vol. 14, No. 1 ( 2022-04-13), p. 8-
    Details
    In: International Journal of Biology, Canadian Center of Science and Education, Vol. 14, No. 1 ( 2022-04-13), p. 8-
    Abstract: Canavalia lineata (Thunb.) DC. (Fabaceae) is a perennial trailing vine that flowers in the summer, and its seeds are sea-dispersed. It grows under various environmental conditions in coastal areas of the temperate and subtropical regions of Asia. Plant species with a wide distribution tend to differentiate in different environmental conditions; therefore, we conducted this study to find whether C. lineata has regional differentiation in seed germination and seedling emergence. Seeds of C. lineata collected from different areas of Japan were used to compare the seed-floating ability, the effect of low temperature on seed dormancy (0, 2, and 8 months) before germination, and the influence of temperature (4 & deg;C, 15 & deg;C, 20 & deg;C, and 25 & thinsp; & deg;C) on seed germination. Seed-floating tests indicated that many C. lineata seeds can float on the sea without losing their germination ability, and there was no associated regional differentiation. In addition, our results showed that this species could germinate without being exposed to low temperatures, but the timing of germination in such cases was different from that in the seeds that experienced low temperatures. The optimal temperature for C. lineata germination was 20 & thinsp; & deg;C or higher. These analyses did not reveal any regional differentiation. Our results suggest that sea-dispersed seeds of C. lineata that do not lose germination ability for a long period may germinate in relatively warm areas regardless of the presence of low temperature conditions. The study also indicates that as germination of this species requires a relatively high temperature; thus, their distribution has not expanded to the north of Japan.
    Type of Medium: Online Resource
    ISSN: 1916-968X , 1916-9671
    URL: Article
    DOI: 10.5539/ijb.v14n1p8
    Language: Unknown
    Publisher: Canadian Center of Science and Education
    Publication Date: 2022
    detail.hit.zdb_id: 2487254-4
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  • 3
    Online Resource
    Online Resource
    Rheophytic Adaptation of Eurya Japonica Thunb. (Ternstroemiaceae)
    Canadian Center of Science and Education ; 2021
    In:  International Journal of Biology Vol. 13, No. 2 ( 2021-11-25), p. 65-
    Details
    In: International Journal of Biology, Canadian Center of Science and Education, Vol. 13, No. 2 ( 2021-11-25), p. 65-
    Abstract: Plants along rivers have narrow leaves to avoid the stress caused by the river & rsquo;s flow during flooding. Plants that have undergone such morphological leaf modifications to adapt to rivers are called rheophytes. Some populations of Eurya japonica Thunb. (Ternstroemiaceae) were grown on riversides so that the comparative morphology and anatomy of leaves between riverside and inland (control) populations could be examined to confirm their rheophytic speciation. Our morphological and anatomical analyses revealed that the leaf of E. japonica in the riverside populations was significantly smaller than that of the inland populations due to the decreased number of cells; therefore, the pattern of rheophytic differentiation in riversides was not the stenophyllization but the miniaturization of the leaf. Moreover, our results indicated that this species in the riverside populations had thicker leaves and higher density of stomata than those of inland populations, suggesting that E. japonica had been morphologically modified in response to the light and water environments along the river.
    Type of Medium: Online Resource
    ISSN: 1916-968X , 1916-9671
    URL: Article
    DOI: 10.5539/ijb.v13n2p65
    Language: Unknown
    Publisher: Canadian Center of Science and Education
    Publication Date: 2021
    detail.hit.zdb_id: 2487254-4
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  • 4
    Online Resource
    Online Resource
    Leaf Adaptation of Eurya japonica Thunb. (Pentaphylacaceae) in Coastal Area
    Canadian Center of Science and Education ; 2022
    In:  Journal of Plant Studies Vol. 11, No. 1 ( 2022-09-24), p. 31-
    Details
    In: Journal of Plant Studies, Canadian Center of Science and Education, Vol. 11, No. 1 ( 2022-09-24), p. 31-
    Abstract: To clarify the process of plant adaptation to coastal areas, we conducted morphological and anatomical analyses of Eurya japonica Thunb. (Pentaphylacaceae). There was no significant difference in leaf shape between the inland and coastal populations, although the leaves in coastal populations tended to be thicker. However, our anatomical analysis revealed significant differences in stomatal size and adaxial and abaxial epidermal cell sizes. The smaller stomata of the coastal population of this species were effective in reducing transpiration during gas exchange. Furthermore, the expansion of epidermal cells could be an adaptive strategy to retain water in leaves in coastal environments.
    Type of Medium: Online Resource
    ISSN: 1927-047X , 1927-0461
    URL: Article
    DOI: 10.5539/jps.v11n1p31
    Language: Unknown
    Publisher: Canadian Center of Science and Education
    Publication Date: 2022
    detail.hit.zdb_id: 2746706-5
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  • 5
    Online Resource
    Online Resource
    Stomatal Study of Introduced Species, Ligustrum lucidum Aiton (Oleaceae), in Coastal Areas of Japan
    Canadian Center of Science and Education ; 2022
    In:  Journal of Plant Studies Vol. 12, No. 1 ( 2022-12-08), p. 24-
    Details
    In: Journal of Plant Studies, Canadian Center of Science and Education, Vol. 12, No. 1 ( 2022-12-08), p. 24-
    Abstract: Alien, introduced, and non-native species expand their distribution through the development of various transportation networks. In Japan, Ligustrum lucidum Aiton (Oleaceae) was introduced in the mid-1800s for use as roadside trees, but has escaped from the planting area and spread everywhere. This species also invades coastal areas and has adapted to develop its characteristic features under various stress conditions. To clarify the adaptive features of L. lucidum in coastal areas, we conducted morphological and anatomical analyses. We found that the stomatal size of L. lucidum was smaller in the coastal populations than in inland populations, which is similar to the coastal adaptation pattern of L. japonicum Thunb., a closely related native species. Our results suggest that strong selective pressure on coastal area conditions could force their leaves to avoid excessive transpiration, and such an adaptation pattern of L. lucidum could expand its distribution to various coastal areas.
    Type of Medium: Online Resource
    ISSN: 1927-047X , 1927-0461
    URL: Article
    DOI: 10.5539/jps.v12n1p24
    Language: Unknown
    Publisher: Canadian Center of Science and Education
    Publication Date: 2022
    detail.hit.zdb_id: 2746706-5
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  • 6
    Online Resource
    Online Resource
    Serpentine Adaptation of Ligustrum japonicum Thunb. (Oleaceae) Based on Morphological and Anatomical Approaches
    Canadian Center of Science and Education ; 2022
    In:  International Journal of Biology Vol. 14, No. 2 ( 2022-09-28), p. 10-
    Details
    In: International Journal of Biology, Canadian Center of Science and Education, Vol. 14, No. 2 ( 2022-09-28), p. 10-
    Abstract: Serpentine soils consist of broadly skewed elemental profiles, including abundant toxic metals and low nutrient content in drought-prone, patchily distributed substrates; therefore, they are one of the most challenging settings for plant life. In this study, a comparative study was conducted using serpentine and inland populations of Ligustrum japonicum Thunb. (Oleaceae) to determine morphological and anatomical differences between the same species growing in the serpentine and inland areas. Longitudinal leaf sections indicated that serpentine populations had slightly thicker leaves than inland populations, contributing to the increased heights of adaxial and abaxial epidermal cells and palisade and spongy tissues. Moreover, the serpentine population had smaller stomata than the inland populations. These results suggest that the strong selective pressure under serpentine soil conditions could force leaves to restore water and avoid excessive transpiration.
    Type of Medium: Online Resource
    ISSN: 1916-968X , 1916-9671
    URL: Article
    DOI: 10.5539/ijb.v14n2p10
    Language: Unknown
    Publisher: Canadian Center of Science and Education
    Publication Date: 2022
    detail.hit.zdb_id: 2487254-4
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  • 7
    Online Resource
    Online Resource
    Seed Germination and Seedling Emergence of Lysimachia mauritiana Lam. (Primulaceae)
    Canadian Center of Science and Education ; 2023
    In:  International Journal of Biology Vol. 15, No. 1 ( 2023-03-01), p. 13-
    Details
    In: International Journal of Biology, Canadian Center of Science and Education, Vol. 15, No. 1 ( 2023-03-01), p. 13-
    Abstract: Lysimachia mauritiana Lam. (Primulaceae), a biennial maritime plant, is widely distributed in East Asia, the Philippines, Micronesia, Polynesia, and the Indian Ocean. Because of this species & rsquo; wide distribution in Japan, we hypothesized that it could germinate and grow even in the bare coastal areas damaged by the tsunami caused by the Great East Japan Earthquake. Thus, we aimed to evaluate the seed germination of L. mauritiana under different sowing depths, temperatures, and salinity soil conditions. The highest germination rate was obtained by sowing L. mauritiana seeds near the soil surface, with germination rate decreasing as the seeding depth increased. Lysimachia mauritiana germinated even at relatively low temperatures. Moreover, we found that L. mauritiana seeds could germinate in less than 1% salt water and in salt-accumulated soil, using soil soaked in 5% or 10% salt water. Our results therefore suggest that L. mauritiana seeds could germinate by sowing on the bare soil surfaces damaged by the tsunami.
    Type of Medium: Online Resource
    ISSN: 1916-968X , 1916-9671
    URL: Article
    DOI: 10.5539/ijb.v15n1p13
    Language: Unknown
    Publisher: Canadian Center of Science and Education
    Publication Date: 2023
    detail.hit.zdb_id: 2487254-4
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  • 8
    Online Resource
    Online Resource
    Adaptative Leaf Morphology of Eurya japonica Thunb. (Ternstroemiaceae) in Serpentine Areas
    Canadian Center of Science and Education ; 2022
    In:  Journal of Plant Studies Vol. 11, No. 1 ( 2022-01-25), p. 10-
    Details
    In: Journal of Plant Studies, Canadian Center of Science and Education, Vol. 11, No. 1 ( 2022-01-25), p. 10-
    Abstract: Serpentine soils are known to affect plant growth and plants in these soils have morphological and anatomical modifications. Comparative leaf morphology and anatomy studies of Eurya japonica Thunb. was conducted between serpentine and inland (control) areas. Our morphological analyses revealed that the individuals in the serpentine areas had significantly smaller and thicker leaves than those in the inland areas. Our anatomical analyses showed that the smaller leaves of serpentines had decreased numbers of cells, and their thicker leaves contributed to the increased height of epidermal cells, palisade tissue, and spongy tissue. Furthermore, the stomatal size of serpentines was significantly smaller than those from the inland areas. We concluded that E. japonica adapted to the serpentine areas by decreasing leaf size due to low levels of nutrients, by thickening the leaves to store water and reducing the stomatal size to minimize water loss via gas exchange.
    Type of Medium: Online Resource
    ISSN: 1927-047X , 1927-0461
    URL: Article
    DOI: 10.5539/jps.v11n1p10
    Language: Unknown
    Publisher: Canadian Center of Science and Education
    Publication Date: 2022
    detail.hit.zdb_id: 2746706-5
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