Organization and Distribution Pattern of MGLR-3, a Novel Retrotransposon in the Rice Blast Fungus Magnaporthe grisea

Kang, Seogchan

doi:10.1006/fgbi.2000.1246

Cited by 32 publications

(20 citation statements)

References 31 publications

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“…This resulted in the identification of a number of different repeats (.100 bp) whose copy numbers ranged from 2 to 498 (show as gray boxes in Figure 4). Only two of the repeats showed BLASTX similarity to known transposable elements: one that corresponded to the Pogo element previously identified at Tel-VR (Schechtman 1990) and another that exhibited similarity to the retrotransposons MAGGY (Farman et al 1996), MGLR-3 (Kang 2001), and Pyret (Nakayashiki et al 2001) in M. oryzae and Skippy in Fusarium oxysporum (Anaya and Roncero 1995).…”

Section: Resultsmentioning

confidence: 94%

Characterization of Chromosome Ends in the Filamentous FungusNeurospora crassa

Kim

Smith

et al. 2009

Genetics

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Telomeres and subtelomere regions have vital roles in cellular homeostasis and can facilitate niche adaptation. However, information on telomere/subtelomere structure is still limited to a small number of organisms. Prior to initiation of this project, the Neurospora crassa genome assembly contained only 3 of the 14 telomeres. The missing telomeres were identified through bioinformatic mining of raw sequence data from the genome project and from clones in new cosmid and plasmid libraries. Their chromosomal locations were assigned on the basis of paired-end read information and/or by RFLP mapping. One telomere is attached to the ribosomal repeat array. The remaining chromosome ends have atypical structures in that they lack distinct subtelomere domains or other sequence features that are associated with telomeres in other organisms. Many of the chromosome ends terminate in highly AT-rich sequences that appear to be products of repeat-induced point mutation, although most are not currently repeated sequences. Several chromosome termini in the standard Oak Ridge wild-type strain were compared to their counterparts in an exotic wild type, Mauriceville. This revealed that the sequences immediately adjacent to the telomeres are usually genome specific. Finally, despite the absence of many features typically found in the telomere regions of other organisms, the Neurospora chromosome termini still retain the dynamic nature that is characteristic of chromosome ends.

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Section: Resultsmentioning

confidence: 94%

Characterization of Chromosome Ends in the Filamentous FungusNeurospora crassa

Kim

Smith

et al. 2009

Genetics

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“…Most reports have focused on ascomycetes, although relatively few have emphasized TE location (Cambareri et al 1998;Hua-Van et al 2000;Thon et al 2004) or identiWed spontaneous mutations in structural genes (Nishimura et al 2000;Kang 2001;Kang et al 2001;Fudal et al 2005). Basidiomycetes have received comparatively less attention, but an increasingly diverse array of TEs have been characterized from P. chrysosporium, A. bisporus, S. commune, T. matsutake, C. neoformans, Laccaria bicolor, Pisolithus microcarpus, and Microbotryum violaceum.…”

Section: Discussionmentioning

confidence: 98%

Structure and transcriptional impact of divergent repetitive elements inserted within Phanerochaete chrysosporium strain RP-78 genes

et al. 2006

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We describe the structure, organization, and transcriptional impact of repetitive elements within the lignin-degrading basidiomycete, Phanerochaete chrysosporium. Searches of the P. chrysosporium genome revealed five copies of pce1, a ~1,750-nt non-autonomous, class II element. Alleles encoding a putative glucosyltransferase and a cytochrome P450 harbor pce insertions and produce incomplete transcripts. Class I elements included pcret1, an intact 8.14-kb gypsy-like retrotransposon inserted within a member of the multicopper oxidase gene family. Additionally, we describe a complex insertion of nested transposons within another putative cytochrome P450 gene. The disrupted allele lies within a cluster of >14 genes, all of which encode family 64 cytochrome P450s. Components of the insertion include a disjoint copia-like element, pcret3, the pol domain of a second retroelement, pcret2, and a duplication of an extended ORF of unknown function. As in the case of the pce elements, pcret1 and pcret2/3 insertions are confined to single alleles, transcripts of which are truncated. The corresponding wild-type alleles are apparently unaffected. In aggregate, P. chrysosporium harbors a complex array of repetitive elements, at least five of which directly influence expression of genes within families of structurally related sequences.

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“…Villalba et al (2001) introduced the impala element into M. grisea where transposition of the element was revealed by excision of the niaD gene promoter and molecular analysis of the revertents using hybridization and sequencing. One mycelial growth mutant and a non- 806 Transposable elements in filamentous fungi Julien et al, 1992Anaya and Roncero, 1995Dobinson et al, 1993Farman et al, 1996bNakayashiki et al, 2001Kang, 2001McHale et al, 1992Zhu and Oudemans, 2000Diolez et al, 1995Kaneko et al, 2000Nielsen et al, 2001Neuvéglise et al, 1996Goyon et al, 1996Bibbins et al, 1998Hamann et al, 2000bMurata and Yamada, 2000Ruiz-Pérez et al, 1996 LTR retrotransposon Pseudoviridae (copia) mars 2, 3 tcen nht2…”

Section: Transposable Element Structure and Distribution In Fungimentioning

confidence: 99%

The biology and potential for genetic research of transposable elements in filamentous fungi

et al. 2005

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Recently many transposable elements have been identified and characterized in filamentous fungi, especially in species of agricultural, biotechnological and medical interest. Similar to the elements found in other eukaryotes, fungal transposons can be classified as class I elements (retrotransposons) that use RNA and reverse transcriptase and class II elements (DNA transposons) that use DNA. The changes (transposition and recombination) caused by transposons can supply wide-ranging genetic variation, especially for species that do not have a sexual phase. The application of transposable elements to gene isolation and population analysis is an important tool for molecular biology and studies of fungal evolution.

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Organization and Distribution Pattern of MGLR-3, a Novel Retrotransposon in the Rice Blast Fungus Magnaporthe grisea

Cited by 32 publications

References 31 publications

Characterization of Chromosome Ends in the Filamentous FungusNeurospora crassa

Characterization of Chromosome Ends in the Filamentous FungusNeurospora crassa

Structure and transcriptional impact of divergent repetitive elements inserted within Phanerochaete chrysosporium strain RP-78 genes

The biology and potential for genetic research of transposable elements in filamentous fungi

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