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  • Dark septate fungi  (1)
  • Transposition  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Ectomycorrhizal, vesicular-arbuscular and dark septate fungal colonization of bishop pine (Pinus muricata) seedlings in the first 5 months of growth after wildfire (1998)
    Springer
    Mycorrhiza 8 (1998), S. 11-18 
    Details
    ISSN: 1432-1890
    Keywords: Key words Pinus muricata ; Vesicular-arbuscular mycorrhizae ; Ectomycorrhizae ; Dark septate fungi ; Fire ; PCR
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  We followed the colonization frequency of ectomycorrhizal (EM), vesicular-arbuscular mycorrhizal (VAM), and dark septate (DS) fungi in 1- to 5-month-old bishop pine seedlings reestablishing after a wildfire. Seedlings were collected on a monthly basis at either a VAM-dominated chaparral scrub site or an EM-dominated forest site, both of which were burned. In both vegetation types, fully developed EM were observed from the third month after germination. EM fungi observed on the seedlings from the scrub site were limited to Rhizopogon subcaerulescens, R. ochraceorubens and Suillus pungens. Seedlings from the forest were colonized by a greater variety of EM fungi including Amanita spp., Russula brevipes and a member of the Cantharellaceae. VAM structures (vesicles, arbuscules or hyphal coils) were observed in the seedling root systems beginning 1 month after germination at the scrub site and 3 months after germination at the forest site. Seedlings from the scrub site consistently had more frequent VAM fungal colonization than those from the forest site through the fifth month after germination. DS fungi were observed in most seedlings from both the scrub and forest sites beginning in the first month post-germination. We propose that these fungi survived as a resident inoculum in the soils and did not disperse into the sites after the fire.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005720050205
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  • 2
    Electronic Resource
    Electronic Resource
    Mitochondrial DNAs of Suillus: three fold size change in molecules that share a common gene order (1988)
    Springer
    Current genetics 13 (1988), S. 49-56 
    Details
    ISSN: 1432-0983
    Keywords: Basidiomycotina ; Molecular evolution ; Transposition ; Length mutations ; Gene order
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We constructed restriction-site and gene maps for mitochondrial DNAs from seven isolates of five species of Suillus (Boletaceae, Basidiomycotina). Each mitochondrial genome exists as a single circular chromosome, ranging in size from 36 to 121 kb. Comparisons within species and between two closely related species revealed that insertions and deletions are the major form of genome change, whereas most restriction sites are conserved. Among more distantly related species, size and restriction-site differences were too great to allow precise alignments of maps, but small clusters of putatively homologous restriction sites were found. Two mitochondrial gene orders exist in the five species. These orders differ only by the relative positions of the genes for ATPase subunit 9 and the small ribosomal RNA and are interconvertible by a single transposition. One of the two gene arrangements is shared by four species whose mitochondrial DNAs span the entire size range of 36 to 121 kb. The conservation of gene order in molecules that vary over three-fold in size and share few restriction sites demonstrates a low frequency of rearrangements relative to insertions, deletions, and base substitutions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00365756
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