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Article
Identification of three closely linked loci conferring broad-spectrum Phytophthora sojae resistance in soybean variety Tosan-231
A variable genomic region containing two Harosoy-derived loci related to Rps7 and one Nemashirazu-derived locus confers broad-spectrum Phytophthora sojae resistance in Tosan-231 and is useful for develo** resis...
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Article
Factors affecting red crown rot caused by Calonectria ilicicola in soybean cultivation
Red crown rot caused by Calonectria ilicicola, a soil-borne fungus, is one of the main soybean diseases in Japan. In field surveys to understand the present status of the disease in Akita, Fukushima, Niigata, Toy...
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Article
Alternaria alternata apple pathotype (A. mali) causes black spot of European pear
A disease caused by Alternaria alternata occurred on the leaves of European pear cultivar Le Lectier in Niigata Prefecture, Japan, and was named black spot of European pear. In conidial inoculation tests, the cau...
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Article
Multiple Rpp-gene pyramiding confers resistance to Asian soybean rust isolates that are virulent on each of the pyramided genes
Since Asian soybean rust (ASR) isolates in South America are highly virulent, diverse, and distantly related to Japanese ones, limited numbers of resistance resources are available in soybean breeding in that ...
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Article
Pathogenic races of soybean rust Phakopsora pachyrhizi collected in Tsukuba and vicinity in Ibaraki, Japan
Six races were identified among 26 single-lesion isolates of Phakopsora pachyrhizi from rust-infected leaves of nine samples of cultivated soybean and one sample of the wild host plant kudzu (Pueraria lobata) col...
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Article
Pathogenic diversity of soybean rust in Argentina, Brazil, and Paraguay
Phakopsora pachyrhizi, the cause of soybean rust, is an economically important pathogen of soybean in South America. Understanding the pathogenicity of indigenous fungal populations is useful for...
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Article
Functional analysis of the melanin biosynthesis genes ALM1 and BRM2-1 in the tomato pathotype of Alternaria alternata
The tomato pathotype of Alternaria alternata (A. arborescens) produces the dark brown to black pigment melanin, which accumulates in the cell walls of hyphae and conidia. Melanin has been implicated as a pathogen...
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Article
Pathological evaluation of host-specific AAL-toxins and fumonisin mycotoxins produced by Alternaria and Fusarium species
Host-specific AAL-toxins and mycotoxin fumonisins are structurally related and were originally isolated from the tomato pathotype of Alternaria alternata and from Fusarium verticillioides, respectively. Previous ...
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Article
Cloning of the mating type locus from Ascochyta lentis (teleomorph: Didymella lentis) and development of a multiplex PCR mating assay for Ascochyta species
The mating type (MAT) locus of the lentil pathogen, Ascochyta lentis, was cloned and characterized using thermal asymmetric interlaced and inverse PCR with primers designed to the HMG-box of Ascochyta rabiei. A m...
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Article
Meira nashicola sp. nov., a novel basidiomycetous, anamorphic yeastlike fungus isolated from Japanese pear fruit with reddish stain
Three undescribed strains of basidiomycetous, anamorphic yeastlike fungi were isolated from Japanese pear fruits with a reddish stain collected in Tottori Prefecture, Japan. The strains are classified in a sin...
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Article
Molecular biological studies on the pathogenicity of Alternaria alternata tomato pathotype
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Article
Detection of fungi producing infection-inhibiting metabolites against Alternaria alternata Japanese pear pathotype from fungi inhabiting internal tissues of Japanese pear shoots
Fungi inhabiting Japanese pear were isolated from internal tissues of cv. Nijisseiki, and culture filtrates (CFs) of 100 isolates were evaluated for their inhibitory activity against infection by Alternaria alter...
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Article
Specific inhibition of spore germination of Alternaria brassicicola by fistupyrone from Streptomyces sp. TP-A0569
Fistupyrone (FP), a metabolite from Streptomyces sp. TP-A0569, inhibited the in vivo infection of Chinese cabbage seedlings by Alternaria brassicicola. To detect the possible action sites of FP, the effect of FP ...
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Article
Spontaneous loss of a conditionally dispensable chromosome from the Alternaria alternata apple pathotype leads to loss of toxin production and pathogenicity
The Alternaria alternata apple pathotype causes Alternaria blotch of susceptible apple cultivars through the production of a cyclic peptide, host-specific toxin, AM-toxin. We recently cloned a cyclic peptide synt...
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Article
Construction and Genetic Analysis of Hybrid Strains between Apple and Tomato Pathotypes of Alternaria alternata by Protoplast Fusion
The genetic controls of host-specific toxin (HST) biosynthesis and the pathogenicity of A. alternata pathogens have been limited by the asexual nature of the life cycle of these fungi. We used a protoplast fusion...
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Article
Genetic Analysis of Pathogenicity and Host-specific Toxin Production of Alternaria alternata Tomato Pathotype by Protoplast Fusion
Several pathotypes of Alternaria alternata are known to produce host-specific toxins (HSTs) as agents of pathogenicity or virulence. However, investigations into the genetic controls of HST biosynthesis and patho...
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Article
Molecular karyotypes for Alternaria plant pathogens known to produce host-specific toxins
There are at least ten plant diseases caused by Alternaria species in which host-specific toxins (HSTs) are responsible for fungal pathogenicity. Of these HST-producers, seven are considered distinct pathotypes ...
