Tohru Teraoka

The MAT1 locus is required for microconidia-mediated sexual fertility in the rice blast fungus

Kohtetsu Kita, Momotaka Uchida, Tsutomu Arie, Tohru Teraoka et autres

Rice blast fungus (Pyricularia oryzae) is a heterothallic ascomycete that causes the most destructive disease in cultivated rice worldwide. This fungus reproduces sexually and asexually, and its mating type is determined by the MAT1 locus, MAT1-1 or MAT1-2. Interestingly, most rice-infecting field …

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Dysfunctional Pro1 leads to female sterility in rice blast fungi

Momotaka Uchida, Takahiro Konishi, Ayaka Fujigasaki, Kohtetsu Kita et autres

Although sexual reproduction is widespread in eukaryotes, some fungal species can only reproduce asexually. In the rice blast fungus Pyricularia ( Magnaporthe ) oryzae , several isolates from the region of origin retain mating ability, but most isolates are female sterile. Therefore, …

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Why do some fungi want to be sterile? The role of dysfunctional Pro1 in the rice blast fungus

Momotaka Uchida, Takahiro Konishi, Ayaka Fujigasaki, Kohtetsu Kita et autres

Abstract Although sexual reproduction is widespread in eukaryotes, some fungal species can only reproduce asexually. Therefore, loss of sexual reproduction may confer survival advantages under certain conditions in certain species. In the rice blast fungus Pyricularia ( Magnaporthe ) oryzae , several …

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Fusariosis in rubber tree: pathogenic, morphological, and molecular characterization of the causal agent

Marília Pizetta, Caroline Geraldi Pierozzi, Yu Ayukawa, Takeshi Kashiwa et autres

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Spray Application of Nonpathogenic Fusaria onto Rice Flowers Controls Bakanae Disease (Caused by Fusarium fujikuroi) in the Next Plant Generation

Hiroki Saito, Mai Sasaki, Yoko Nonaka, Jun Tanaka et autres

We demonstrated that a spray treatment of rice flowers with the spores of nonpathogenic fusaria mimicked the disease cycle of the seed-borne bakanae pathogen Fusarium fujikuroi and effectively suppressed the disease. Spray treatment of nonpathogenic fusaria reduced the degree of pathogen invasion …

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Population Structure of Double-Stranded RNA Mycoviruses That Infect the Rice Blast Fungus Magnaporthe oryzae in Japan

Yuta Owashi, Mitsuhiro Aihara, Hiromitsu Moriyama, Tsutomu Arie et autres

Various viruses infect Magnaporthe oryzae (syn., Pyricularia oryzae), which is a well-studied fungus that causes rice blast disease. Most research has focused on the discovery of new viruses and the hypovirulence-associated traits conferred by them. Therefore, the diversity and prevalence of viruses …

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Magnaporthe oryzae chrysovirus 1 strain D confers growth inhibition to the host fungus and exhibits multiform viral structural proteins

Tomoya Higashiura, Yu Katoh, Syun‐ichi Urayama, Osamu Hayashi et autres

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Induction of resistance to diseases in plant by aerial ultrasound irradiation

Daichi Kawakami, Takanobu Yoshida, Yutaro Kanemaru, M. Huarhua et autres

Ultrasound, which refers to frequencies above the audible limit of human hearing, is a candidate for inducing resistance to pathogens in plants. We revealed that aerial ultrasound of 40.5 kHz could induce disease resistance in tomatoes and rice when the plants were …

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Infection by Magnaporthe oryzae chrysovirus 1 strain A triggers reduced virulence and pathogenic race conversion of its host fungus, Magnaporthe oryzae

Mitsuhiro Aihara, Syun‐ichi Urayama, Minh Tuong Le, Yu Katoh et autres

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Chitin-deacetylase activity induces appressorium differentiation in the rice blast fungus Magnaporthe oryzae

Misa Kuroki, Kana Okauchi, Sho Yoshida, Yuko Ohno et autres

Abstract The rice blast fungus Magnaporthe oryzae differentiates a specialized infection structure called an appressorium to invade rice cells. In this report, we show that CBP1, which encodes a chitin-deacetylase, is involved in the induction phase of appressorium differentiation. We demonstrate that …

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植物病原性Fusarium oxysporumの個々の染色体の配列決定【Powered by NICT】

Kashiwa Takeshi, Toshinori Kozaki, Ishii Kazuo, Turgeon B. Gillian et autres

LAMP法を用いる栄養成長ステージのホウレンソウ(Spinacia oleracea L.)の迅速な性同定法

Naoko Fujita, Yu Ayukawa, Mitsutoshi Fuke, Tohru Teraoka et autres