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Article
Mating type of isolates derived from the spermogonial state ofPuccinia coronata var.coronata
Hyphal confrontation between two haploid cultures originating from single basidiospores was used to determine the mating type ofPuccinia coronata var.coronata. Pairs of 15 single-basidiospore cultures were placed...
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Article
Life cycle and morphology ofMelampsora yezoensis onSalix serissaefolia
Uredinial and telial states of aMelampsora species occurring on the leaves ofSalix serissaefolia were for the first time recorded. Field observations and inoculation experiments showed that the spermogonial and a...
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Article
Differentiation ofMelampsora rust species on willows in Japan using PCR-RFLP analysis of ITS regions of ribosomal DNA
To develop a reliable method for identifyingMelampsora species parasitic on willows in Japan, we differentiated 10Melampsora species by PCR-RFLP analysis. Internal transcribed, spacer (ITS) regions, including 5.8...
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Article
A newOphiostoma species isolated from Japanese oak infested byPlatypus quercivorus
A newOphiostoma species was isolated from the sapwood ofQuercus mongolica var.grosseserrata and described asOphiostoma longicollum sp. nov. The species is characterized by a long perithecial neck with a gelatinou...
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Article
Blue stain fungi associated withTomicus piniperda (Coleoptera: Scolytidae) on Japanese red pine
A number of various species of blue-stain fungi were isolated fromTomicus piniperda adults at various stages of development, as well as from the galleries, pupal chambers and sapwood underneath galleries on Japan...
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Article
Ophiostomatoid fungi associated withIps cembrae in Japan and their pathogenicity of Japanese larch
Six ophiostomatoid fungi, i.e.,Ceratocystiopsis minuta, Ceratocystis laricicola, Ophiostoma brunneo-ciliatum, O. laricis, O. piceae andOphiostoma sp., were isolated from the galleries ofIps cembrae on Japanese Ia...
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Article
Comparisons of Ophiostomatoid fungi associated withTomicus piniperda andT. minor in Japanese red pine
Five species ofOphiostoma, twoLeptographium species and aGraphium species were isolated from two morphologically and ecologically similar bark beetle species,Tomicus piniperda andT. minor, and their infested Japa...
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Article
Virulence of ophiostomatoid fungi associated with the spruce bark beetleIps typographus f.japonicus in Yezo spruce
Yezo spruce trees (Picea jezoensis), approximately 40-year-old were inoculated with eight ophiostomatoid fungi associated withIps typographus f.japonicus to compare relative virulence of the fungi. Among them,Oph...
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Article
Leptographium pini-densiflorae sp. nov. from Japanese red pine
ALeptographium species was isolated from deadPinus densiflora at six sites in Japan. The fungus is morphologically most similar toL. lundbergii but could be distinguished from that species by its short stipes, pr...
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Article
A substance inducing teliospore production in wheat leaf rust,Puccinia recondita f. sp.tritici
A substance inducing teliospore production inPuccinia racondita f. sp.tritici was found in water and methanol extracts of wheat leaves with telia of the wheat leaf rust just before harvest time. Methanol (MeOH) a...
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Article
Pathogenic Races of Phakopsora pachyrhizi on Soybean and Wild Host Plants Collected in Japan
A total of 45 single uredinial isolates of Phakopsora pachyrhizi were collected from rust-infected soybean and wild host plants (Pueraria lobata and G. soja ) at different localities in central and southwestern J...
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Article
Ophiostomatoid fungi associated with bark beetles onAbies veitchii in wave-regenerated forests
Relationships between tree mortality and bark beetle infestation onAbies veitchii at the wave-regenerated forest in Mt. Asahi, Okuchichibu area were investigated. Most of the firs with green needles and newly dev...
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Article
Correlation between pathogenicity and molecular characteristics in the willow leaf rusts Melampsora epitea and M. humilis in Japan
We studied the correlation between pathogenicity and restriction fragment length polymorphism (RFLP) type, which was determined by polymerase chain reaction-based RFLP analysis of the internal transcribed spa...
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Article
Three new Ophiostoma species isolated from Japanese red pine
Three new species of Ophiostoma found on Japanese red pine are described as Ophiostoma pusillum sp. nov., O. botuliforme sp. nov., and O. nigrogranum sp. nov. Ophiostoma pusillum is characterized by oblong ascosp...
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Article
Ophiostoma species associated with bark beetles infesting three Abies species in Nikko, Japan
Ophiostoma species were isolated from bark beetles and Abies mariesii, A. veitchii and A. homolepis attacked by the beetles in Nikko, Tochigi, central Honshu, Japan. One to two Ophiostoma
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Article
Three new Ophiostoma species with Pesotum anamorphs associated with bark beetles infesting Abies species in Nikko, Japan
Three species of Ophiostoma possessing Pesotum anamorphs isolated from bark beetles and their galleries infesting Abies species in Nikko, Japan, are described as new species. Ophiostoma nikkoense is characterized...
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Article
Caeoma tsukubaense n. sp., a rhododendron rust fungus of Japan and southern Asia, and its relationship to Chrysomyxa rhododendri
A rust fungus found in Japan on Rhododendron kaempferi, R. kiusianum, and R. dauricum has previously been identified as Chrysomyxa rhododendri. Light and scanning electron microscopy of fresh and herbarium materi...
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Article
Two species of Leptographium isolated from blue-stained sapwood of Pinus khasya and bark beetles in Thailand
Two species of Leptographium were isolated from blue-stained sapwood of Pinus khasya and bark beetle galleries in pine trees near Chiang Mai, Thailand. Based on morphological observations, these two species were ...
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Article
Teliospore-inducing activity for wheat leaf rust in the extracts of various host plant leaves infected with telia of rust fungi
MeOH and water extracts were obtained from 16 species of infected leaves with rust fungi belonging to 18 species in 6 families: Pucciniaceae, Melampsoraceae, Coleosporiaceae, Pileolariaceae, Phragmidiaceae, an...
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Article
The teleomorph of Leptographium yunnanense, discovered in crosses among isolates from Thailand, China, and Japan
A teleomorph was discovered in crosses among isolates of Leptographium yunnanense isolated from Pinus spp. originating in Thailand, China, and Japan. The ascocarps are black, globose to subglobose, and lacking ne...
