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Koji AZEGAMI, Yasuhiro INOUE
2013 Volume 2013 Issue 60 Pages
11-13
Published: December 01, 2013
Released on J-STAGE: January 06, 2015
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Application of a bacteriophage lytic to
Pantoea ananatis, the pathogen of bacterial palea browning of rice, on rice plants at the flowering stage in the field, suppressed the incidence of the disease.
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Kazuhiko SAKAI, Satoshi NODA, Kenji YAGASAKI, Tsuneo UETAKE
2013 Volume 2013 Issue 60 Pages
15-17
Published: December 01, 2013
Released on J-STAGE: January 06, 2015
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Kazuhiko SAKAI, Tsuneo UETAKE, Satoshi NODA
2013 Volume 2013 Issue 60 Pages
19-21
Published: December 01, 2013
Released on J-STAGE: January 06, 2015
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Toshiko OHASHI, Kazumi AOKI, Yasunori TOMITA
2013 Volume 2013 Issue 60 Pages
23-24
Published: December 01, 2013
Released on J-STAGE: January 06, 2015
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Satoshi SHIBATA, Katsuya KUWABARA
2013 Volume 2013 Issue 60 Pages
25-27
Published: December 01, 2013
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Kentaro IKEDA, Toshihiko URUSHIBARA, Takeshi KABE, Satoshi SHIBATA
2013 Volume 2013 Issue 60 Pages
29-30
Published: December 01, 2013
Released on J-STAGE: January 06, 2015
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Noriko ORIHARA, Hidetoshi UEKUSA, Kentaro MIYAKAWA, Masahiro OKAMOTO, ...
2013 Volume 2013 Issue 60 Pages
31-33
Published: December 01, 2013
Released on J-STAGE: January 06, 2015
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Miyako YAMASHIRO, Kumi AOKI, Tsutomu IMURA
2013 Volume 2013 Issue 60 Pages
35-36
Published: December 01, 2013
Released on J-STAGE: January 06, 2015
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Kanae MATSUMOTO, Masaji MORISHIMA, Takashi FUKUDA
2013 Volume 2013 Issue 60 Pages
37-40
Published: December 01, 2013
Released on J-STAGE: January 06, 2015
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Yuuki IMAMURA, Satoshi KAGIWADA, Tsuyoshi ONO, Hideo HOSHI, Jun TAKEUC ...
2013 Volume 2013 Issue 60 Pages
41-43
Published: December 01, 2013
Released on J-STAGE: January 06, 2015
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Haruna IIHAMA, Jun TAKEUCHI, Tsuyoshi ONO, Yutaro YOSHIZAWA, Kota YAZA ...
2013 Volume 2013 Issue 60 Pages
45-47
Published: December 01, 2013
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Southern blight of ginger [
Zingiber officinale (Willd.) Roscoe] occurred on Hachijo Island of Tokyo Metropolis in 2012. A pathogen isolated from the diseased plants was identified as
Sclerotium rolfsii Saccardo based on morphological characteristics as well as molecular analyses of the rDNA-ITS region. An inoculation test confirmed that the fungus was a causal agent of this disease. This is the first report of the disease in Japan.
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Kiichi NAKAYAMA
2013 Volume 2013 Issue 60 Pages
49-51
Published: December 01, 2013
Released on J-STAGE: January 06, 2015
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Norihito YAMAUCHI, Fumio SATO, Takashi SHIRAKAWA
2013 Volume 2013 Issue 60 Pages
53-54
Published: December 01, 2013
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True leaves of young lettuce plants (3 to 4 weeks old) were more susceptible than their cotyledons to isolates of
Bremia lactucae (BL) collected from Ibaraki Prefecture. In the three commercial cultivars described as resistant ones in the seed company catalogs, cv. Haru P was consistently resistant to three isolates of BL, however, the other two showed susceptible reaction and rich conidial formation was observed on the inoculated true leaves of young lettuce plants.
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Hiroyuki IYOZUMI, Mikihiko SUZUKI, Chizuko KAGEYAMA
2013 Volume 2013 Issue 60 Pages
55-57
Published: December 01, 2013
Released on J-STAGE: January 06, 2015
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Kazunori ICHIKAWA, Masashi OHSAWA, Hisashi SHIBATA, Shigeki NAKAGAWA
2013 Volume 2013 Issue 60 Pages
59-62
Published: December 01, 2013
Released on J-STAGE: January 06, 2015
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We investigated the occurrence of wood-rotting fungi in a peach orchard in Yamanashi Prefecture where some peach trees died after gale damage and some other trees suffered with dieback of main or side branches. We found the fruit bodies of nine wood-rotting fungi on peach trees.
Trametes versicolor,
Ganoderma applanatum and
Ganoderma lucidum have already been recorded as causing disease outbreaks on peach trees. The other five fungi, i.e.,
Fomitopsis sp.,
Trametes hirusuta,
Oligoporus sp.,
Laetiporus cremeiporus and
Perenniporia fraxinea are recorded for the first time on peach trees.
Abortiporus biennis may not be a pathogen of peach trees. We would like to propose their disease names after further studies on pathogenicity to peach trees and other properties of those species.
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Youhei KANEKO, Seisaku UMEMOTO, Shingo USHIO
2013 Volume 2013 Issue 60 Pages
63-65
Published: December 01, 2013
Released on J-STAGE: January 06, 2015
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Youhei KANEKO, Azusa SHIOTA, Takeshi SUZUKI, Tatsuya SUZUKI, Yurika MI ...
2013 Volume 2013 Issue 60 Pages
67-70
Published: December 01, 2013
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Yoshihiko KANEGAE, Chika TANAKA, Yoshiyuki EBIHARA, Seiji UEMATSU, Mic ...
2013 Volume 2013 Issue 60 Pages
71-73
Published: December 01, 2013
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Chiba Prefecture is the largest producer of calla lily (
Zantedeschia rehmannii) in Japan. In 2011, root rot, leaf yellowing and stunted growth of calla lily occurred in Chiba Prefecture. A pathogen isolated from the diseased plants was identified as
Pythium myriotylum based on cultural characteristics as well as molecular analysis of the nuclear ribosomal internal transcribed spacer (ITS) region. An inoculation test confirmed that the oomycete was the causal agent of the disease. This is the first report of the disease in Japan.
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Mamoru SATOU, Yuji KAJITANI, Kazutaka TSUKIJI, Yoshiaki CHIKUO, Yosuke ...
2013 Volume 2013 Issue 60 Pages
75-77
Published: December 01, 2013
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Gray mold of perennial pea (
Lathyrus latifolius) and primrose (
Primula malacoides) occurred in Ibaraki Prefecture on June 2009 and in Fukuoka Prefecture on September 2010, respectively. Both causal agents were identified as
Botrytis cinerea. Perennial pea is added to hosts of‘gray mold of sweet pea’caused by
B. cinerea in Japan.
B. cinerea pathogenicity on primrose had not been confirmed. Hence, we analyzed pathogenicity and formally reported the disease‘gray mold of primrose’in Japan.
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Mamoru SATOU, Michie KOBAYASHI, Takeshi KANTO, Kei SUGAWARA, Makoto YA ...
2013 Volume 2013 Issue 60 Pages
79-81
Published: December 01, 2013
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The seedlings and petals of russell prairie gentians that had been subjected to UV-B irradiation showed reduced anthracnose symptoms. This is possibly due to suppression of
Colletotrichum fioriniae hyphal growth by UV-B irradiation. Furthermore, defense responses in the host plants are also possibly involved in reducing anthracnose symptoms.
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Haruna IIHAMA, Jun TAKEUCHI, Tsuyoshi ONO, Misako SHIMURA, Yutaro YOSH ...
2013 Volume 2013 Issue 60 Pages
83-85
Published: December 01, 2013
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Gray mold of Christmas bells (
Sandersonia aurantiaca) and fairy bells (
Disporum pullum) occurred on Hachijo Island of Tokyo Metropolis in 2011 and 2012 respectively. These pathogens isolated from the diseased plants were identified as
Botrytis cinerea Persoon based on morphological characteristics as well as molecular analyses of the rDNA-ITS region. Inoculation tests confirmed that the fungus was a causal agent of the diseases. These are the first reports of the diseases in Japan.
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Mika YASUDA, Ai TAKEDA, Tetsuya YASUDA, Masahiro HIRAE
2013 Volume 2013 Issue 60 Pages
87-89
Published: December 01, 2013
Released on J-STAGE: January 06, 2015
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Takuya SHIBA, Tamaki UEHARA-ICHIKI, Yasuo OHTO, Yuriko HAYANO
2013 Volume 2013 Issue 60 Pages
91-93
Published: December 01, 2013
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Mami ISHIZAKI, Tetsuya ISHIKAWA
2013 Volume 2013 Issue 60 Pages
95-98
Published: December 01, 2013
Released on J-STAGE: January 06, 2015
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Naoto HARUYAMA, Kanae MATSUMOTO
2013 Volume 2013 Issue 60 Pages
99-101
Published: December 01, 2013
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Naoto HARUYAMA, Kanae MATSUMOTO, Makoto KOBAYASHI
2013 Volume 2013 Issue 60 Pages
103-106
Published: December 01, 2013
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Katsuya KUWABARA, Masami TAKAHASHI, Masaru TADENUMA
2013 Volume 2013 Issue 60 Pages
107-109
Published: December 01, 2013
Released on J-STAGE: January 06, 2015
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Hiroshi OIDA
2013 Volume 2013 Issue 60 Pages
111-114
Published: December 01, 2013
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Hiroshi NISHIMURA
2013 Volume 2013 Issue 60 Pages
115-116
Published: December 01, 2013
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Takashi OHBAYASHI, Risako ARAI, Shinji KOYANO
2013 Volume 2013 Issue 60 Pages
117-120
Published: December 01, 2013
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Naoto HARUYAMA, Kanae MATSUMOTO
2013 Volume 2013 Issue 60 Pages
121-124
Published: December 01, 2013
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Tomoya YOKOYAMA, Tetsuro KASHIMA
2013 Volume 2013 Issue 60 Pages
125-127
Published: December 01, 2013
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Yoshiko FUJIMOTO, Masayuki WATANABE, Yasunori TOMITA
2013 Volume 2013 Issue 60 Pages
129-130
Published: December 01, 2013
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Kaori YARA, Takeshi SHIMODA, Norihide HINOMOTO, Koukichi NAGASAKA, Sei ...
2013 Volume 2013 Issue 60 Pages
131-134
Published: December 01, 2013
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The development of methods for efficiently capturing native parasitoids and their molecular identification has proved useful in basic and applied studies on parasitoids as biological control agents. In this study, we developed a method for capturing
Cotesia vestalis, an important native parasitoid of the diamondback moth,
Plutella xylostella, by periodically placing Komatsuna traps, consisting of potted Komatsuna (
Brassica rapa) plants infested with
P. xylostella larvae, in fields in Tsukuba, Ibaraki Prefecture, Japan from June to December in 2012. The traps were then transferred to our laboratory for collection of the parasitoids that later emerged from
P. xylostella. We also developed specific PCR primers to identify
C. vestalis. Our results reveal that a total of 62 parasitoids were captured using the traps during the experimental period, especially in June and July (n=58), and that all the parasitoids captured and then analyzed using the primers (n=58) were
C. vestalis.
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Eri MURASAKI, Katsuya KUWABARA, Masami TAKAHASHI
2013 Volume 2013 Issue 60 Pages
135-137
Published: December 01, 2013
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Akihito OZAWA, Toru UCHIYAMA
2013 Volume 2013 Issue 60 Pages
139-142
Published: December 01, 2013
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We investigated susceptibility to 12 insecticides in populations of the oriental tea tortrix,
Homona magnanima Diakonoff, collected from tea fields in Shizuoka Prefecture from 2004 to 2008. In the Shimada- Yui populations, the corrected mortalities 8 days after treatment with each of three insect growth regulator (IGR) insecticides, i.e. tebufenozide, methoxyfenozide, and chromafenozide [diacylhydrazine (DAH) analogs], showed slightly lower mortality compared to the susceptible strain except for chromafenozide. The mortalities to methoxyfenozide showed a gradual decrease in five years. Resistance ratios based on LC50 of tebufenozide were 10.7 and 30.1; those of methoxyfenozide were 10.9 and 11.7 in 2005 and 2006, respectively. In the case of treatment with flufenoxuron and lufenuron [both benzoylurea (BU) analog], the susceptibilities from 2004 to 2008 did not change with a clear tendency, although the susceptibility to flufenoxuron was considerably lower than lufenuron in each year and population, the resistance ratio of flufenoxuron in 2005 was 305.7. Flubendiamide, profenofos, chlorpyrifos, emamectin benzoate, and spinosad showed high insecticidal effects. As for methomyl, its resistance was found in 1980s, the change of methomyl-susceptibility was not clear.
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Akihito OZAWA, Toru UCHIYAMA
2013 Volume 2013 Issue 60 Pages
143-145
Published: December 01, 2013
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We investigated the flight height of adults of several species of minute insects, including the tea spiny whitefly,
Aleurocanthus camelliae Kanmiya and Kasai, using yellow sticky traps set vertically in three tea fields during the end of Oct. to the end of Nov. in 2011. The traps were set at heights from 0.5 m to 3.5 m above ground with 0.5 m intervals; the numbers of target minute insects captured by the traps were counted by binocular microscope. The numbers of
A. camelliae adults captured by each trap set vertically showed the max at 1.0 m height above ground: about same height as the tea canopy, although the numbers captured at traps higher than 1.5 m height were very few (one or two individuals). As for the other minute insects, adult males of
Pseudaulacaspis pentagona and their parasitoid,
Arrhenophagus albitibiae, showed the trend to be more numerous at lower traps, although more than a few individuals (30 - 59, and 5 - 23, respectively) were captured at the highest traps of 3.5 m. The numbers of
Trichogramma dendrolimi: egg-parasitoid of Tortricidae, were about the same at each height.
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Tomohiro HONDA, Kyo ITOYAMA
2013 Volume 2013 Issue 60 Pages
147-148
Published: December 01, 2013
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