Entorrhiza C. Weber (Ustilaginales) in root nodules of Juncus and Scirpus in New Zealand

Fineran, Judith M.

doi:10.1080/0028825x.1971.10430195

Cited by 11 publications

(4 citation statements)

References 4 publications

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“…Dauciform roots appear less related to the root nodules induced by smut-fungi in other sedges (e.g. Fineran, 1971) than to the root nodules of certain conifers. In the latter structure, unlike the legume nodule, the swelling of a suppressed lateral root occurs in the absence of microbial inhabitants (e.g.…”

Section: Dauciform Roots and Mycorrhizasmentioning

confidence: 94%

THE BIOLOGY OF DAUCIFORM ROOTS IN THE SEDGE CYATHOCHAETE AVENACEA

Lamont

1974

New Phytologist

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SUMMARYSmall, carrot-shaped roots produced by Cyathochaete avenacea (Cyperaceae) were investigated. Quantitative data are given on their comparative morphology, anatomy and soil-plant relationships. While factors controlling their formation appear to have much in common with those controlling proteoid root formation, their origin and structure are quite different. The cyperaceous roots become endomycorrhizal late in their development. These root structures are essentially distinct from any described in other families, and the term 'dauciform' is proposed to distinguish them.

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Section: Dauciform Roots and Mycorrhizasmentioning

confidence: 94%

THE BIOLOGY OF DAUCIFORM ROOTS IN THE SEDGE CYATHOCHAETE AVENACEA

Lamont

1974

New Phytologist

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“…Only nuclear rDNA data could be generated for Entorrhiza aff. fineranae, a member of the monogeneric subclass Entorrhizomycetidae (Fineran 1971;Bauer et al 1997Bauer et al , 2001, which has been classified in the Ustilaginomycotina. Combined analyses were done with and without Entorrhiza to determine sensitivity of topologies to missing data.…”

Section: Gene Samplingmentioning

confidence: 99%

Resolving the phylogenetic position of the Wallemiomycetes: an enigmatic major lineage of Basidiomycota

et al. 2006

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The Wallemiomycetes includes three species of molds from the genus Wallemia . These fungi are adapted to environments of high osmotic stress, contaminate various foods, cause respiratory disease, and have an unusual mode of asexual reproduction. Wallemia was recently proposed as a new class based on 18S ribosomal RNA gene sequences to accommodate the isolated position of the clade in the Basidiomycota. We analyzed the phylogenetic position of the Wallemiomycetes using 3451 nucleotide characters of the 18S, 25S, and 5.8S ribosomal RNA genes and 1282 amino acid positions of rpb1, rpb2, and tef1 nuclear protein-coding genes across 91 taxa. Different gene regions and methods of phylogenetic inference produce mildly conflicting placements of the Wallemiomycetes. Parsimony analyses of nrDNA data suggest that the Wallemiomycetes is an early diverging lineage of Basidiomycota, occupying a basal position near the Entorrhizomycetidae. Ultrastructural data, some Bayesian analyses, and amino acid sequences suggest the Wallemiomycetes may be the sister group of the Agaricomycotina or Ustilaginomycotina. The combined gene tree supports the Wallemiomycetes as a lineage basal to a core clade of Pucciniomycotina, Ustilaginomycotina, and Agaricomycotina with robust measures of branch support. This study reinforces the isolated position of Wallemia in the Basidiomycota using molecular data from six nuclear genes. In total, five major lineages of Basidiomycota are recognized: the Agaricomycotina, Ustilaginomycotina, Pucciniomycotina, Entorrhizomycetidae, and the Wallemiomycetes.

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“…Studies in our laboratory over the past two decades have been aimed at increasing fundamental knowledge o n the biology of the genus (Fineran 1971(Fineran , 19786, 1982(Fineran , 1983, including the structure and development of the spore. The surface ornamentation of spores in the five species has been investigated using techniques of scanning electron microscopy (SEM) (Fineran 1 9 7 8~) .…”

Section: Introductionmentioning

confidence: 99%

Teliospore wall structure in Entorrhiza (Tilletiaceae) and its relationship to taxonomy of the genus

Fineran¹,

Fineran²

1992

Can. J. Bot.

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FINERAN, B. A,, and FINERAN, J. M. 1992. Teliospore wall structure in Erltorrhiza (Tilletiaceae) and its relationship to taxonomy of the genus. Can. J. Bot. 70: 1964Bot. 70: -1983. Spore wall organization in the five species of Entorrhiza (Ustilaginales) has been investigated using thin sections for transmission electron microscopy, supported by light and scanning electron microscopy and some freeze-etching. Material was examined from herbaria, specimens preserved in fixative, and fresh host tissue. The wall has four main layers, numbered 1-4 from the outside to inside of the wall; some layers are further differentiated into zones. Layer 1 in E. aschersoniana, E. casparyana, and E. caricicoln has two zones: a broad outer zone 2 of dense matrix and a narrow inner zone 1 of less compacted material. Zone 1 is absent in E. cypericola. In E. scirpicola, layer 1 is represented by discontinuous longitudinal ridges. In all spores, layer 2 is composed of a homogeneous electron-dense matrix. Layer 1 in E. aschersoniana, E. casparyana, and E. caricicola is uniformly thick, but in E. cypericola it is broad with an irregular outer margin. In E. scirpicola, layer 2 is differentiated into a distinctive pattern of longitudinal ribs. In all spores of Entorrhiza, layer 3 is resolvable into fine lamellae, corresponding to the mosaic of striations seen after freeze-etching. Layer 3 in Entorrhiza is equivalent to the partition layer described in other Tilletiaceae. Layer 4 has the same organization in all the species, consisting of a very narrow zone 2 abutting layer 3 and a broad zone 1 that forms the rest of the layer. Based on wall structure, E. nschersorliana and E. casparyana represent the most closely related species, followed by E. caricicoln, with E. cypericola more distant again. Entorrhiza scirpicola is considered the least related of the species; only its layers 3 and 4 resemble the other species.Key words: Erltorrhiza, Tilletiaceae, spore wall ultrastructure, species relationships. FINERAN, B. A,, et FINERAN, J. M. 1992. Teliospore wall structure in Entorrhiza (Tilletiaceae) and its relationship to taxonomy of the genus. Can. J. Bot. 70 : 1964-1983. A l'aide de la microscopie photonique, et Clectronique par balayage et par transmission, et B I'occasion du cryodCcapage, les auteurs ont CtudiC l'organisation de la paroi sporale chez cinq espkces dlEntorrhiza (Ustilaginales). Le matCriel utilisC provient d'herbiers, de spCcimens fixCs ainsi que de tissus frais de l'hbte. La paroi montre quatre couches principales, numCrotCes de 1 B 4 h partir de l'extkrieur vers 1'intCrieur de la paroi; certaines couches sont de plus diffCrenciCes en zones. La couche 1 chez les E. aschersoniana, E. casparyana et E. caricicola posskde deux zones; une zone 2 externe importante constituCe de matCriel dense et une zone 1 Ctroite et plus interne constituCe de matCriel plus lbche. La zone 1 est absente chez 1'E. cypericola. Chez 1'E. scirpicola, la couche est reprCsentCe par des striCs longitudinales discontinues. Dans toutes les spores, la couc...

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Entorrhiza C. Weber (Ustilaginales) in root nodules of Juncus and Scirpus in New Zealand

Cited by 11 publications

References 4 publications

THE BIOLOGY OF DAUCIFORM ROOTS IN THE SEDGE CYATHOCHAETE AVENACEA

THE BIOLOGY OF DAUCIFORM ROOTS IN THE SEDGE CYATHOCHAETE AVENACEA

Resolving the phylogenetic position of the Wallemiomycetes: an enigmatic major lineage of Basidiomycota

Teliospore wall structure in Entorrhiza (Tilletiaceae) and its relationship to taxonomy of the genus

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