Yu Ito

Yu Ito
Setsunan University · Faculty of Pharmaceutical Sciences

Ph.D.

About

41
Publications
14,328
Reads
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294
Citations
Additional affiliations
October 2017 - March 2020
Setsunan University
Position
  • Professor
June 2015 - May 2017
Xishuangbanna Tropical Botanical Garden
Position
  • PostDoc Position
January 2013 - December 2014
University of Canterbury
Position
  • PostDoc Position

Publications

Publications (41)
Article
The aquatic plant genus Ruppia (Ruppiaceae) comprises eight species mainly in coastal brackish areas of the world. While the known taxa of Ruppia thus far generally had either four- or eight-carpelled flowers, our recent Ruppia collection from Western Cape, South Africa showed flowers with only two carpels. This characteristic morphological evidenc...
Article
Althenia (Potamogetonaceae) is an aquatic plant genus disjunctly distributed in the southern- (South Africa's Cape Floristic Region: CFR) and northern- (Mediterranean Eurasia) hemispheres. This genus and its Australasian relative, Lepilaena, share similar floral characters yet have been treated as different genera or sections of Althenia sensu lato...
Article
Ottelia, a pantropical genus of aquatic plants belonging to the family Hydrocharitaceae, includes several narrowly distributed taxa in Asia. Although the Asian species have received comparatively more research attention than congeners in other areas, various key taxonomic questions remain unaddressed, especially with regards to apparent cryptic div...
Article
Sagittaria is a genus of ca. 40 species in the aquatic plant family Alismataceae with a nearly global distribution, and a center of diversity in the New World. Two thirds of the known species are native to the Americas, while only a few species are distributed in Africa, Asia and Europe. A previous biogeographic analysis of the genus suggested an A...
Article
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Nothapodytes (Icacinaceae) is a genus of seven to eleven evergreen or deciduous tree species distributed in tropical Asia from India to Japan. Nothapodytes nimmoniana sensu lato is the most widespread species of the genus, being reported sporadically throughout South Asia, Southeast Asia, Taiwan, and Japan’s southwest islands. Nothapodytes amamianu...
Article
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Members of the brackish-water species Lamprothamnium succinctum (Charales, Charophyceae) are widely distributed from tropical to temperate regions, including East Asia. In Japan, L. succinctum is listed as an endangered species and is protected by the government, because it was recorded only at two localities, Lake Hachiro-gata (Akita Prefecture) a...
Article
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Eriocaulon is a genus of c. 470 aquatic and wetland species of the monocot plant family Eriocaulaceae. It is widely distributed in Africa, Asia and America, with centres of species richness in the tropics. Most species of Eriocaulon grow in wetlands although some inhabit shallow rivers and streams with an apparent adaptive morphology of elongated s...
Article
The delimitation of cryptic species is necessary to accurately classify and appropriately conserve biodiversity. Integrative analyses can be incisive in detecting and circumscribing cryptic diversity, especially in species complexes whose members are delineated by minor or overlapping morphological variation. We adopt an integrative approach to ass...
Article
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A new species, Impatiens hukaungensis J. Murata & Nob. Tanaka (Balsaminaceae), is described from Kachin State, northern Myanmar. This species is characterized by decumbent stem, oblanceolate leaves, 2-flowered simple raceme, white with purple mottled dorsal petal and purple dolabriform lateral united petals. Morphological characters, including its...
Conference Paper
Eriocaulon is a genus of about 400 species of monocotyledonous flowering plants in the family Eriocaulaceae. The genus is widely distributed in the world, with the centers of diversity in tropical re - gions, such as tropical Asia and tropical Africa � A previous molec - ular phylogeny implied an African origin for Eriocaulon as a sister rela...
Article
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Phylogeny is vitally important to evaluate evolutionary distinctiveness and conservation priorities of species. Najas ancistrocarpa is one of the rarest and least known East Asian species of the c. 30–40 species of the aquatic plant genus Najas (Hydrocharitaceae). We used a recently discovered collection of this nationally and regionally endangered...
Article
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Callitriche (Plantaginaceae) is a cosmopolitan plant genus in shallow lakes and river margins, wetlands, ditches and temporary pools. Its species exhibit considerable diversity in growth habit, aquatic (submerged), amphibious and terrestrial, but the polarity of growth habit evolution to or from terrestrial habitats is yet to be addressed. The orig...
Article
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Najas (Hydrocharitaceae) is a cosmopolitan genus of 30–40 species of aquatic plants. While an infrageneric subdivision into two subgenera is generally accepted, various sectional classifications proposed in subg. Caulinia have been controversial. Earlier analyses identified tropical Asia, which harbors more than one-third of all species, as the are...
Article
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Ruppia cirrhosa and R. maritima are two widely used names, each applied respectively to a long- and coiled-pedunculate species or a short- and non-coiled pedunculate species of Ruppia. The nomenclatural history of the two names is outlined here. A lectotype for the name R. cirrhosa is designated and the name is shown to be a homotypic synonym of R....
Article
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The genus Najas (Hydrocharitaceae) was treated for the Flora of Thailand in 2001 with four species recorded. Through field and herbarium observations, it is proposed to exclude one of these four species, N. minor. A further species, N. marina, is reported for the first time. An updated key to the species is provided.
Article
Isolepis R.Br. (Cyperaceae) is a genus of aquatic, wetland, or ephemeral sedges that comprises 76 species, mostly in the southern hemisphere, especially Africa and Australasia. Isolepis crassiuscula Hook.f., Isolepis lenticularis R.Br. and Isolepis producta (C.B. Clarke) K.L.Wilson are among the Australasian members of a morphologically well-define...
Article
Potamogeton is a cosmopolitan genus of 90–95 species in which numerous hybridization events have occurred worldwide. A plant recently collected from Argentina exhibited ambiguous morphology that does not match any species of the genus. We aimed to assess if the plant coexisting with another Potamogeton species is a product of reticulate evolution....
Article
Limosella is a small aquatic genus of Scrophulariaceae of twelve species, of which one is distributed in northern circumpolar regions, two in southern circumpolar regions, two in the Americas, one endemic to Australia, and six in tropical or southern Africa or both. The Australasian L. curdieana has always been considered distinct but its close phy...
Article
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The aquatic and wetland ephemeral genus Isolepis (Cyperaceae) comprises 76 species mostly in the southern hemisphere, and especially Africa and Australasia. The latest taxonomic revision recognizes three subgenera (Fluitantes, Isolepis and Micranthae) and three sections in subgen. Isolepis. Subgen. Fluitantes, matforming perennial herbs typically b...
Article
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The diploid aquatic genus Sparganium (Typhaceae) comprises ca. 14 species mainly in cool temperate regions of the world. Among these, S. emersum comprises two infraspecific taxa, subspecies acaule from eastern North America and subspecies emersum from Eurasia and western North America (and occasionally from eastern North America as well). However,...
Article
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Annual or perennial herbs, in brackish or (not in Thailand) fresh alkaline water habitats. Leaves alternate or subopposite, loosely sheathed at the base but without a ligule, the blades capillary, 1-nerved, somewhat toothed at the tip. Inflorescence a short terminal spike at anthesis, appearing umbel-like in fruit. Flowers in pairs on slender pedun...
Article
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AbstractMyanmar (Burma) constitutes a significant component of the Indo-Myanmar biodiversity hotspot, with elements of the Indian, the Indochina, and the Sino-Japanese floristic regions, yet thus far only a few reliable sources of the country's flora have been available. As a part of a contribution for the floristic inventory of Myanmar, since it i...
Article
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Ruppia L. is the only genus in Ruppiaceae that is primarily distributed in brackish water. A previous molecular phylogenetic work revealed that 2 non-flowering Ruppia specimens from Japan and Russia were genetically identical to Ruppia megacarpa, a species previously known only from Australasia. To update East Asian floras, our study examined flowe...
Article
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The aquatic vascular plants of the Imperial Palace, Tokyo was investigated. Aquatic twelve species (eight families and nine genera) were found at the Dokan-go and the stream in front of the Kanbaku-tei. The decrease in the species diversity of aquatic vascular plants in the last two decades in the study sites was revealed.
Article
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AbstractIndo-China floristic region is among the 34 richest floristic regions of the world, and its plant diversity is still under investigation. Here we report a new record of an aquatic plant, Potamogeton distinctus, from Myanmar, a part of the region, that is detected by means of DNA barcoding method. The molecular method further identified the...
Article
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The flora of Tropical Asia is among the richest in the world, yet the actual diversity is estimated to be much higher than previously reported. Myanmar and Thailand are adjacent countries that together occupy more than the half the area of continental Tropical Asia. This geographic area is diverse ecologically, ranging from cool-temperate to tropic...
Article
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abstract: We revised the distribution and conservation status of Sparganium L. for the Canadian Prairie Provinces (cpp ) based on herbarium voucher specimens. In the region, we recognized eight species: Sparganium americanum, S. angustifolium, S. emersum, S. eurycarpum, S. fluctuans, S. glomeratum, S. hyperboreum, and S. natans. Among these, Sparga...
Article
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In the course of floristic research in Myanmar, some noteworthy aquatic monocots have been collected: Lemna trisulca L. (Araceae), Blyxa aubertii var. echinosperma (C.B.Clarke) Cook & Lüönd, and Najas tenuis Magnus (Hydrocharitaceae). These are new to the flora of Myanmar. To compare with other regional materials and/or closely related taxa, chloro...
Article
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In the course of revising the aquatic flora of Thailand, some noteworthy herbarium specimens were found; those are Nechamandra alternifolia (Roxb. ex Wight) Thwaites (Hydrocharitaceae) and Potamogeton octandrus Poiret (Potamogetonaceae), which are new to the country’s flora. The taxonomic notes on the species to distinguish them from the related...
Article
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For those who work in taxonomy and systematics, field work is fundamental to conduct each research. In the past decade, the author whose researches focus primarily on the origin and evolution of widespread aquatic plants has performed dozens of plant surveys in Asia, Australia, Europe, and N. America. Among these are those carried out in Russian F...
Article
Recent molecular phylogenetic studies reported high diversity of Ruppia species in the Mediterranean. Multiple taxa, including apparent endemics, are known from that region, however, they have thus far not been exposed to phylogenetic analyses aimed at studying their relationships to taxa from other parts of the world. Here we present a comprehensi...
Article
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Hybridization is a common phenomenon in many plant genera, and among them is the world’s largest aquatic genus, Potamogeton (Potamogetonaceae) with about 69 species and 50 hybrids reported. Here we provide genetic insights into Potamogeton hybrids from China, where ten or more putative hybrids exist, of which eight have been genetically confirmed....
Article
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The tropical seagrass genus, Halodule, is distributed in warm to tropical areas throughout the world. We performed separate molecular phylogenetic analyses of Halodule based on both plastid and nuclear DNA sequences, followed by haplotype analysis, focusing on plants in the western Pacific area. One western tropical Atlantic species, H. wrightii s....
Article
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Unlabelled: Premise of the study: The monogeneric family Ruppiaceae is found primarily in brackish water and is widely distributed on all continents, many islands, and from subartic to tropical zones. Ruppia taxonomy has been confusing because of its simplified morphology yet high phenotypic plasticity and the existence of polyploidy and putativ...
Article
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In the course of floristic research of Myanmar, some noteworthy aquatic monocots; Caldesia parnassifolia (Bassi ex L.) Parl. (Alismataceae), Nechamandra alternifolia (Roxb. ex Wight) Thwaites (Hydrocharitaceae), Potamogeton maackianus A. Benn. and P. octandrus Poir. (Potamogetonaceae) were collected. Of them, C. parnassifolia, P. maackianus, and P....
Article
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Many hybrid taxa have been described in Potamogeton. These hybrids can usually be recognized by morphological intermediacy between parent species but in some cases recognition is difficult due to extensive morphological variation. Potamogeton xinbaensis Kadono which was reported as a hybrid between P. lucens L. subsp. sinicus (Migo) H. Hara var. te...
Article
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Chromosome number of Zannichellia palustris L. (Zannichelliaceae) in Japan was observed. The plants collected from two localities had the chromosome number of 2n = 24. This is the first time the chromosome number of Z. palustris whose collecting site was recorded has been reported in Japan.
Article
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The current distribution of Zdnnichellia patustrisL, (Zannichelliaceae), which is an endangered submerged species in brackish and fresh waters, was surveyed in Japan.Eleven prefectures categorized Z pagustrisas "living" or "unknown," The current distribution is confirmed only in eleven communities of eight prefectures. Of these,three communities ha...

Projects

Projects (3)
Project
National Museum of Nature and Science and Forest Research Institute of Myanmar (Ministry of Natural Resources and Environmental Conservation) started a new joint research project from 2016 towards the Flora of Myanmar by conducting the field expeditions to unexplored areas in Myanmar such as Tanintharyi (Tenasserim) to make the checklist of the flowering plants, bryophytes, lichens, fungi etc. in the region.
Project
to complete floristic treatments of Alismataceae, Cymodoceaceae, Hydrocharitaceae, Lentibulariaceae, Menyanthaceae, Nymphaeaceae, Pontederiaceae, Potamogetonaceae, Ruppiaceae, Zosteraceae for Flora of Cambodia, Laos and Vietnam, Flora of Myanmar, Flora of Singapore, Flora of Thailand.
Project
To document diversity of aquatic plants in Myanmar. Publication of " A Field Guide to Aquatic Plants of Myanmar"