Faculty Profiles - HATA Kunihiko

Papers - HATA Kunihiko

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Sato Yoshikazu, Timoto Ryouko, Takao Etsuko, Sone Kouichi, Hata Kunihiko . The seasonal changes of adults captured by Etanol traps in Kagoshima Prefecture. . The Japanese Forestry Society Congress Database114 ( 0 ) 62 - 62 2003

Takao Etsuko, Maruta Kyouhei, Sone Kouichi, Hata Kunihiko, Satou Yoshikazu, Nakamura Katsunori . Investigation of Number of the Japanese Pine Sawyer on Sakurajima island . The Japanese Forestry Society Congress Database114 ( 0 ) 135 - 135 2003

SONE Koichi, KITADA Yoshiyuki, SAKAKIBARA Aoi, TANAKA Koki, HATA Kunihiko, SATO Yoshikazu . Virulence of the Pinewood Nematode, Bursaphelenchus xylophilus (Steiner and Buhrer) Nickle, Extracted from the Japanese Pine Sawyer, Monochamus alternatus Hope, Collected on Sakuraiima Island . Research bulletin of the Kagoshima University Forests ( 30 ) 1 - 7 2002.12

Language：Japanese Publisher：Kagoshima University

In order to examine the virulence of the pinewood nematode (PWN), Bursaphelenchus xylophilus (Steiner and Buhrer) Nickle, we inoculated PWN extracted from the Japanese pine sawyer, Monochamus alternatus Hope, collected in pine stands on Sakurajima Island (Sakurajima population) and a virulent isolate (Ka-4) into susceptible Pinus thunbergii seedlings in August 2000 and July 2001. By January 2001, 30 % and 17 % of the seedlings inoculated with Ka-4 and the Sakurajima population in August 2000 had been killed, respectively, and the difference in the percentages of wilted seedlings was statistically significant. However, the total percentage of wilted seedlings by September 2001 did not differ significantly between the isolates (Ka-4: 59%, Sakurajima population: 47%). The oleoresin flow began to decrease 4 days after inoculation of both isolates of PWN and to stop 2 weeks after inoculation. Xylem dysfunction occurred 4 and 6 weeks after inoculation in Ka-4 and the Sakurajima population inoculated seedlings, respectively. PWN were extracted from most wood chips sampled from the trunks of inoculated seedlings 2 weeks after inoculation in 2001. The density of PWN extracted from 1 cm3 wood chip sample did not differ significantly between the isolates. From these results, we can conclude that the virulence of the Sakurajima population is sub equal to the virulent isolate, Ka-4. A weak virulence of the Sakurajima population might not explain the 2-3 year delay in the invasion of pine wilt disease from the severely damaged pine stands on Ohsumi Peninsula and its prevalence in the eastern area of Sakurajima Island.

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Hata Kunihiko, Atari Reiko, Sone Koichi . Isolation of endophytic fungi from leaves of Pasania edulis and their within-leaf distributions . Mycoscience43 ( 5 ) 369 - 373 2002.10

Language：English Publisher：The Mycological Society of Japan

Endophytic fungi were isolated from leaves of Pasania edulis, one of the most important trees of the warm temperate forests in southern Kyushu, by the surface sterilization method using H2O2 as a sterilizing agent. From a tree in the Experimental Nursery of Kagoshima University, located at the city of Kagoshima, Phyllosticta sp. and Colletotrichum spp. were frequently isolated. From a stand in a laurel forest in Mt. Takakuma, an ascomycetous fungus (Ascomycete sp. 1) and Phomopsis sp. were frequently isolated. Phyllosticta sp. was isolated more frequently from petiole segments and leaf segments with midrib and Phomopsis sp. from petiole segments and leaf-base segments with midrib than other segments. Colletotrichum spp. were isolated less frequently from petioles and Ascomycete sp. 1 from petiole segments and leaf-base segments with midrib than other segments. As possible causes of such biases in within-leaf distributions of the endophytes, differences in infection modes and negative interactions of major endophytes within leaves are suggested.

DOI： 10.47371/mycosci.myc43369

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Sone Koichi, Hiroi Sachiko, Nagahama Daisuke, OHKUBO Chiharu, NAKANO Eiji, MURAO Shun-ichi, HATA Kunihiko . Hoarding of acorns by granivorous mice and its role in the population processes of Pasania edulis (Makino) Makino . Ecological research17 ( 5 ) 553 - 564 2002.9

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Papers - HATA Kunihiko