Phylogenetic and structural analyses of the mating-type loci in<i>Clavicipitaceae</i>

Yokoyama, Eiji; Arakawa, Masao; Yamagishi, Kenzo; Hara, Akira

doi:10.1111/j.1574-6968.2006.00447.x

Cited by 61 publications

(57 citation statements)

References 32 publications

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“…BLASTP and BLASTX analyses of the genomic region upstream of the idiomorph revealed the presence of a DNA lyase gene with highest homology to the M. fijiensis DNA lyase, both at the nucleotide (76% identity over 1,083 nucleotides) and the protein level (67% identity over 312 amino acids). The DNA lyase gene is commonly found upstream from the mating-type loci in other ascomycetes (8,33,36). Besides the DNA lyase gene, no other genes could be identified upstream from the mating-type loci (Fig.…”

Section: Resultsmentioning

confidence: 99%

Evolutionary Dynamics of Mating-Type Loci of Mycosphaerella spp. Occurring on Banana

2010

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The devastating Sigatoka disease complex of banana is primarily caused by three closely related heterothallic fungi belonging to the genus Mycosphaerella: M. fijiensis, M. musicola, and M. eumusae. Previous phylogenetic work showing common ancestry led us to analyze the mating-type loci of these Mycosphaerella species occurring on banana. We reasoned that this might provide better insight into the evolutionary history of these species. PCR and chromosome-walking approaches were used to clone the mating-type loci of M. musicola and M. eumusae. Sequences were compared to the published mating-type loci of M. fijiensis and other Mycosphaerella spp., and a novel organization of the MAT loci was found. The mating-type loci of the examined Mycosphaerella species are expanded, containing two additional Mycosphaerella-specific genes in a unique genomic organization. The proteins encoded by these novel genes show a higher interspecies than intraspecies homology. Moreover, M. fijiensis, M. musicola, and M. eumusae contain two additional mating-type-like loci, containing parts of both MAT1-1-1 and MAT1-2-1. The data indicate that M. fijiensis, M. musicola, and M. eumusae share an ancestor in which a fusion event occurred between MAT1-1-1 and MAT1-2-1 sequences and in which additional genes became incorporated into the idiomorph. The new genes incorporated have since then evolved independently in the MAT1-1 and MAT1-2 loci. Thus, these data are an example of the evolutionary dynamics of fungal MAT loci in general and show the great flexibility of the MAT loci of Mycosphaerella species in particular.

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Section: Resultsmentioning

confidence: 99%

Evolutionary Dynamics of Mating-Type Loci of Mycosphaerella spp. Occurring on Banana

2010

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“…At smaller geographic scales, Wen et al (2012) found that different monoconidial isolates showed genetic variation, consistent with genetic recombination and heterothallism of C. militaris (Table 1). The mating system in C. militaris is controlled by one locus with two alleles, MAT 1-1-1 and MAT 1-2-1 (Shrestha et al 2004; Yokoyama et al 2006; Zheng et al 2011). While natural fruiting bodies are formed from insects infected with heterokaryotic mycelia containing both mating types, fruiting bodies can also form on cereal substrate (Shrestha et al 2012).…”

Section: Macrofungi Parasitizing Animalsmentioning

confidence: 99%

Diversity, population genetics, and evolution of macrofungi associated with animals

Tang

Zhang

et al. 2015

Mycology

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Macrofungi refers to all fungi that produce visible fruiting bodies. These fungi are evolutionarily and ecologically very divergent. Evolutionarily, they belong to two main phyla, Ascomycota and Basidiomycota, and many of them have relatives that cannot form visible fruiting bodies. Ecologically, macrofungi can be associated with dead organic matter, plants, and animals. Here we review our current understanding of population structure and biogeography of macrofungi associated with animals. Their interactions, functions, and patterns of coevolution are described and discussed. Our focus is on studies using molecular markers. Our analyses suggest that the types of fungi–animal associations play an important role in the structure of these animal-associated fungal populations.

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“…The genus Ephelis has already been phylogenetically analyzed based on the sequences of rDNA-ITS regions and the mating loci with other Clavicipitaceae fungi 10,[35][36][37] . We elucidated that there existed two types in E. japonica isolates in results of PCR-RFLP.…”

Section: Ephelis Japonica Hennings (Hennings 1904)mentioning

confidence: 99%

Black Choke Disease of Warm Season Grasses Caused by Ephelis japonica in Japan and its Epiphytic Features

Tsukiboshi

Takahashi

Uegaki

et al. 2008

JARQ

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The causal fungus of black choke disease in various C4 warm season grasses was collected from places mainly in Ishigaki Island, the most southern region of Japan. The fungus was found on 19 species of 14 genera of C4-grasses such as Brachiaria, Chloris, Chrysopogon, Cynodon, Digitaria, Echinochloa, Eragrostis, Eriochloa, Imperata, Leptochloa, Miscanthus, Panicum, Paspalum, and Pennisetum, including turfgrasses and forage crops. The fungus colonizes flowering heads and makes them mummified in appearance with the panicles attaching to each other. The color of the mature stromata ranges from grayish-white to black. Leaf surfaces of some grasses are colonized by the fungus, producing white streaks of hyphae. Many colorless, needle-shaped conidia of 10-25 × 0.5-1 µm are produced on infected tissues. The fungus was identified as Ephelis japonica based on the morphologies and molecular characteristics. Epiphytic features of E. japonica were examined using infected and uninfected Paspalum thunbergii clones from which the fungus was eradicated by treatment with a systemic fungicide. Hyphae colonized the surface of leaf primordia only in infected plants, a feature shared with some of the closely related Balansia spp. The potential for utilizing E. japonica to confer insect and disease resistance in turfs and forage crops was discussed.

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Phylogenetic and structural analyses of the mating-type loci inClavicipitaceae

Cited by 61 publications

References 32 publications

Evolutionary Dynamics of Mating-Type Loci of Mycosphaerella spp. Occurring on Banana

Evolutionary Dynamics of Mating-Type Loci of Mycosphaerella spp. Occurring on Banana

Diversity, population genetics, and evolution of macrofungi associated with animals

Black Choke Disease of Warm Season Grasses Caused by Ephelis japonica in Japan and its Epiphytic Features

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