• Korean Journal of Environment and Ecology
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• v.15 no.4
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• pp.319-329
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• 2002

The vascular plants in the region of Guryongsan and Cheongoksan. Bonghwa-gun, Kyeongsangbuk-do, were consisted of 405 taxa; 96 families, 268 genus. 349 species. 51 varieties, 5 forms. From the floristic point of view, Guryoungsan and Cheongoksan belongs to the middle province in Korea. The rare and endangered plants appeared to 6 taxa were Dryopteris crassirhizoma, Iris ensata var. spontanea, Gastrodia elata, Rodgersia podophylla, Rhododendron micranthum and Scrophularia buergeriana investigated these area.

• Korean Journal of Environment and Ecology
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• v.15 no.4
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• pp.293-318
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• 2002

As one of the botanical hot spots of the Korean peninsula, the vascular plant species in the areas of Taebaeksan, Hambaeksan, Geumdaebong(Peak) and Maebongsan were summarized as 694 taxa, 89 families, 302 genus, 579 species. 102 varieties and 13 forms. Based on the list of rare and endangered plants from the Forest Research Institute and the Ministry of Environment, 22 species were recorded in the studied areas: Thuja koraiensis(Cupressaceae), Arisaema heterophyllum(Araceae), Disporum ovale(Liliaceae), Tricyrtis dialata(Liliaceae), Lilium distichum(Liliaceae), Anemone koraiensis(Ranunculaceae), Rodgersia podophylla(Saxifragaceae), Rosa marretii(Rosaceae), Viola diamantica(Violaceae), Viola albida(Violaceae), Echinopanax horridum(Araliaceae), Acanthopanax chiisannensis(Araliaceae), Lysimachia coreana(Prinmulaceae), Syringa velutina var. kamibayashii, Halenia corniculata(Gentianaceae), Partrinia saniculaefolia(Valerianaceae), Adenophora grandiflora(Campanulaceae), Cacalia pseudo-taimingasa(Compositae) Iris odaesanensis(Iridaceae), Leontice microrhyncha(Berberidaceae), Rpdgersia tabularis(Saxifragaceae), and Acanthopanax sentico년(Araliaceae), Among them the four species were recorded from the list of the Ministry of Environment. As most of the species were recorded from the mountain-trails, the long-term habitat monitoring for the species is required .

• Proceedings of the National Institute of Ecology of the Republic of Korea
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• v.2 no.4
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• pp.229-234
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• 2021

Iris dichotoma Pall. found on Daechung Island in Korea has been designated as an endangered species. To aid in conservation efforts of this species, this study investigated its germination characteristics and seed dormancy type. Four sets of seeds were incubated at different temperatures (4/1℃, 15/6℃, 20/10℃, and 25/15℃). One set of seeds was cold stratified (4 weeks at 4/1℃). The final germination rate and mean germination time showed that the optimal germination temperature was 25/15℃. Final germination rates were ~70%, showing no significant difference among temperature treatments. However, mean germination time were significantly different among all temperature treatments except for 4/1℃. Mean germination time for seeds with temperature treatments of 15/6℃, 20/10℃, and 25/15℃ were 3.2, 2.1, and 1.5 weeks, respectively. At 25/15℃, the mean germination time was half of that at 15/6℃. Seeds of I. dichotoma had fully developed embryos at the time of dispersal. No additional growth of the embryo was observed. Cold stratification did not affect the final germination rate or the mean germination time. This study shows that seeds of I. dichotoma have no physiological or morphological dormancy, unlike other members of the Iris genus known to have seed dormancy that needs a relatively high incubation temperature (≥25/15℃) for mass propagation to occur. These results will be useful for understanding ecophysiological mechanisms related to the species' habitat. They are also useful for mass propagation of I. dichotoma for the purpose of conserving this endangered species.

• Korean Journal of Environmental Biology
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• v.27 no.2
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• pp.164-175
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• 2009

The flora of the vascular plant in Mt. Munsu and Mt. Okseok was listed as 689 taxa; 95 families, 332 genus, 600 species, 93 varieties and 5 forms. Based on the list of rare plants by Korea Forest Service and Korea Forest Research Institute, 16 taxa were recorded. And endangered plant was recorded by 1 taxa, Iris koreana var. albiflora. Based on the list of Korean endemic plant, 44 taxa were recorded. According to the specific plant species by classes, class I has 51 taxa, class II has 33 taxa, class III has 28 taxa, class IV has 12 taxa. In class V, we found Houttuynia cordata, but the species was considered to be worthless because it was planted as an ornamental plant in the area. Naturalized plant species were listed as 27 taxa; 99 families, 22 genus, 26 species, 1 varieties. And naturalization index was 3.9%.

• Korean Journal of Environment and Ecology
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• v.16 no.4
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• pp.345-358
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• 2003

The vascular plant species in the areas of Gonamsan and Shiribong in the Baekdudaegan were summarized as 295 texa: 89 families, 193 genus, 245 species, 44 varieties and 6 forms.10 taxa were recorded in the surveyed areas as the Korean endemic plants: Hosta capitat (Liliacease), Polygonatum lasianthum var. corenum (Liliaceae), Chloranthus japonicus (Cloranthaceae), Salix hulteni (Salicaoeae), Clematis richotoma (Ranunculaceae), Spiraea prunifolia for. simpliciflora (Rosaceae), Vicia unijuga (Fabaceae), Viola albida (Violaceae), cornus walter(Cornaceae), Weigela subsessilis (Caprifoliaceae).According to the list of Korean rare and endangered plants complied in the studied areas:Iris ensata var. spoyanea(Iridaceae), Viola albida (Vioaceae) and Aristolochia contorta (aristolochiaceae) Due to the rapid destruction and increase of visitors and the studied areas are located close to the villages, the naturalized plant species in the areas were more frequently appeared than the rare and endangered plant species.

• The Plant Pathology Journal
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• v.40 no.2
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• pp.225-232
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• 2024

The microbiomes of two important rice cultivars in Vietnam which differ by their susceptibility to the bacterial leaf blight (BLB) disease were analyzed through 16S rRNA amplicon technology. A higher number of operational taxonomic units and alpha-diversity indices were shown in the BLB-resistant LA cultivar than in the BLB-susceptible TB cultivar. The BLB pathogen Xanthomonas was scantly found (0.003%) in the LA cultivar, whereas was in a significantly higher ratio in the TB cultivar (1.82%), reflecting the susceptibility to BLB of these cultivars. Of special interest was the genus Acholeplasma presented in the BLB-resistant LA cultivar at a high relative abundance (22.32%), however, was minor in the BLB-sensitive TB cultivar (0.09%), raising a question about its roles in controlling the Xanthomonas low in the LA cultivar. It is proposed that Acholeplasma once entered the host plant would hamper other phytopathogens, i.e. Xanthomonas, by yet unknown mechanisms, of which the triggering of the host plants to produce secondary metabolites against pathogens could be a testable hypothesis.

• Korean Journal of Plant Resources
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• v.23 no.4
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• pp.327-349
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• 2010

This study was carried out to investigate the distribution of vascular plants and their use from 2007 to 2009 in Mt. Unmum(Cheongdo-gun, Gyeongsangbuk-Do). The vascular plants were summarized as 605 taxa including 98 families, 304 genus, 514 species, 3 subspecies, 68 varieties, and 20 forma. Among the investigated 605 taxa, 21 rare and endangered plants, 29 Korean endemic plants were included. Based on the list of specially designated plants by Ministry of Environment, 70 taxa included Iris odaesanensis and Gastrodia elata were recorded in the investigated area. The naturalized plants were identified as 23 taxa and the percent of naturalized index(NI) was 3.8% of total 605 taxa vascular plants. Usage of 605 taxa were consists of 225 taxa(37.2%) of edible plants, 191 taxa(31.6%) of medicinal plants, 64 taxa(10.6%) of ornamental plants, 46 taxa(7.6%) of pasture plants, 18 taxa(3.0%) of timber plants, 14 taxa(2.3%) of fiber plants, and 3 taxa(0.5%) of industrial plants. To management of natural resource, we suppose that it is required to establish an ecological learning area to minimize human disturbance and an effective managemet strategy by continuous monitoring for ecosystem change.