Fig 26 - uploaded by Teik Khiang Goh
Content may be subject to copyright.
Source publication
Delortia, represented by the type, D. palmicola, is redescribed from fresh decaying palm material collected in north Queensland, Australia. Two new species, D. tumidoapicis and D. aquatica, collected from wood submerged in a freshwater stream, also in north Queensland are described. The three species are illustrated with light micrographs and line...
Similar publications
Two new species of Filarinema M?nnig, 1929 (Nematoda: Trichostrongylina) are described from the pyloric antrum of kangaroos. Filarinema occidentale sp. nov. from the stomach of the red kangaroo, Macropus rufus (Desmarest, 1822) fromWestern Australia is distinguished from most congeners in having both the dorsal and ventral internal branches of the...
Citations
... Sporidesmiella cornuta produce conidia with arms. Dactylaria tunicata and Delortia palmicola produce conidia surrounded by a hyaline mucilaginous sheath (Goh & Hyde, 1997). These adaptations are found in taxa in both tropical and temperate regions. ...
... The new taxon Helicomyxa everhartioides is characterised by hyaline conidia that are hemi-circinate in the sense of Goos (1987) and are produced from a layer of conidiophores within mucous sporodochia. With these characteristics, it is morphologically similar to species of Delortia Pat. and Everhartia (Linder 1929, Goh & Hyde 1997, Yanna et al. 2000, but differs by the presence of clamp connections. Among the species of Delortia and Everhartia, only E. phoenicis Yanna, W.H. Ho, Goh & K.D. Hyde produces aseptate conidia (Yanna et al. 2000). ...
A hyphomycete producing hemi-circinate, hyaline, aseptate conidia from clamped conidiophores in gelatinous sporodochia was discovered in Taiwan. In view of its unique combination of characteristics, the new genus Helicomyxa and the new species H. everhartioides are proposed. Morphological and ultrastructural studies as well as an analysis of partial nuclear large subunit ribosomal DNA sequences suggest a relationship to teleomorphs belonging to the Hyaloriaceae in the Auriculariales.
Over the past three decades, a wealth of studies has shown that palm trees (Arecaceae) are a diverse habitat with intense fungal colonisation, making them an important substratum to explore fungal diversity. Palm trees are perennial, monocotyledonous plants mainly restricted to the tropics that include economically important crops and highly valued ornamental plants worldwide. The extensive research conducted in Southeast Asia and Australasia indicates that palm fungi are undoubtedly a taxonomically diverse assemblage from which a remarkable number of new species is continuously being reported. Despite this wealth of data, no recent comprehensive review on palm fungi exists to date. In this regard, we present here a historical account and discussion of the research on the palm fungi to reflect on their importance as a diverse and understudied assemblage. The taxonomic structure of palm fungi is also outlined, along with comments on the need for further studies to place them within modern DNA sequence-based classifications. Palm trees can be considered model plants for studying fungal biodiversity and, therefore, the key role of palm fungi in biodiversity surveys is discussed. The close association and intrinsic relationship between palm hosts and palm fungi, coupled with a high fungal diversity, suggest that the diversity of palm fungi is still far from being fully understood. The figures suggested in the literature for the diversity of palm fungi have been revisited and updated here. As a result, it is estimated that there are about 76,000 species of palm fungi worldwide, of which more than 2500 are currently known. This review emphasises that research on palm fungi may provide answers to a number of current fungal biodiversity challenges.
A comprehensive account of fungal classification from freshwater habitats is outlined and discussed in the present review based on literature of biodiversity studies and recent morpho-phylogenetic analyses. A total of 3,870 freshwater fungal species are listed with additional details on the isolation source, habitat, geographical distribution, and molecular data. The Ascomycota (2,968 species, 1,018 genera) dominated the freshwater fungal taxa wherein Sordariomycetes (823 species, 298 genera) had the largest number, followed by Dothideomycetes (677 species, 229 genera), Eurotiomycetes (276 species, 49 genera), and Leotiomycetes (260 species, 83 genera). Other phyla included in the updated classification of freshwater fungi are: Chytridiomycota (333 species, 97 genera), Rozellomycota (221 species, 105 genera), Basidiomycota (218 species, 100 genera), Blastocladiomycota (47 species, 10 genera), Monoblepharomycota (29 species, 6 genera), Mucoromycota (19 species, 10 genera), Aphelidiomycota (15 species, 3 genera), Entomophthoromycota (6 species, 4 genera), Mortierellomycota (5 species, 3 genera), Olpidiomycota (4 species, 1 genus), Zoopagomycota (3 species, 2 genera), and Sanchytriomycota (2 species, 2 genera). The freshwater fungi belong to 1,361 genera, 386 families and 145 orders. The Pleosporales and Laboulbeniaceae are the largest freshwater fungal order and family comprised of 391 and 185 species, respectively. The most speciose genera are Chitonomyces (87, Laboulbeniomycetes), Verrucaria (50, Eurotiomycetes), Rhizophydium (52, Rhizophydiomycetes), Penicillium (47, Eurotiomycetes), and Candida (42, Saccharomycetes).
Sordariomycetes is one of the largest classes of Ascomycota that comprises a highly diverse range of fungi mainly characterized by perithecial ascomata and inoperculate unitunicate asci. Freshwater Sordariomycetes play an important role in ecosystems and some of them have the potential to produce bioactive compounds. This study documents and reviews the freshwater Sordariomycetes, which is one of the largest and important groups of fungi in aquatic habitats. Based on evidence from DNA sequence data and morphology, we introduce a new order Distoseptisporales, two new families, viz. Ceratosphaeriaceae and Triadelphiaceae, three new genera, viz. Aquafiliformis, Dematiosporium and Neospadicoides, 47 new species, viz. Acrodictys fluminicola, Aquafiliformis lignicola, Aquapteridospora fusiformis, Arthrinium aquaticum, Ascosacculus fusiformis, Atractospora aquatica, Barbatosphaeria lignicola, Ceratosphaeria aquatica, C. lignicola, Chaetosphaeria aquatica, Ch. catenulata, Ch. guttulata, Ch. submersa, Codinaea yunnanensis, Conioscypha aquatica, C. submersa, Cordana aquatica, C. lignicola, Cosmospora aquatica, Cylindrotrichum submersum, Dematiosporium aquaticum, Dictyochaeta cangshanensis, D. ellipsoidea, D. lignicola, D. submersa, Distoseptispora appendiculata, D. lignicola, D. neorostrata, D. obclavata, Hypoxylon lignicola, Lepteutypa aquatica, Myrmecridium aquaticum, Neospadicoides aquatica, N. lignicola, N. yunnanensis, Ophioceras submersum, Peroneutypa lignicola, Phaeoisaria filiformis, Pseudostanjehughesia lignicola, Rhodoveronaea aquatica, Seiridium aquaticum, Sporidesmiella aquatica, Sporidesmium lageniforme, S. lignicola, Tainosphaeria lunata, T. obclavata, Wongia aquatica, two new combinations, viz. Acrodictys aquatica, Cylindrotrichum aquaticum, and 9 new records, viz. Chaetomium globosum, Chaetosphaeria cubensis, Ch. myriocarpa, Cordana abramovii, Co. terrestris, Cuspidatispora xiphiago, Sporidesmiella hyalosperma, Stachybotrys chartarum,S. chlorohalonata. A comprehensive classification of the freshwater Sordariomycetes is presented based on updated literature. Phylogenetic inferences based on DNA sequence analyses of a combined LSU, SSU, RPB2 and TEF1α dataset comprising species of freshwater Sordariomycetes are provided. Detailed information including their habitats distribution, diversity, holotype, specimens collected and classification are provided.
Morphological studies of anamorphic taxa with helicospores (helicosporous fungi) were carried out based on observation of specimens collected in China and comparisons with descriptions in the literature. After examination of more than 300 freshly collected specimens and 100 herbarium specimens, we conclude that 71 species in 14 genera are presently known in mainland China, including 9 new species and 2 new combinations. The new species are Helicomyces denticulatus G.Z. Zhao, Xing Z. Liu & W.P. Wu; Helicosporium dentophorum G.Z. Zhao, Xing Z. Liu & W.P. Wu; Helicosporium sympodiophorum G.Z. Zhao, Xing Z. Liu & W.P. Wu; Helicoma hainanense G.Z. Zhao, Xing Z. Liu & W.P. Wu; Helicoma hyalonema G.Z. Zhao, Xing Z. Liu & W.P. Wu; Helicoma latifilum G.Z. Zhao, Xing Z. Liu & W.P. Wu; Helicoma scarabaeiforme G.Z. Zhao; Xenosporium latisporum G.Z. Zhao, Xing Z. Liu & W.P. Wu; Xenosporium ovatum G.Z. Zhao, Xing Z. Liu & W.P. Wu. The new combinations are Helicoma fumosum (P. Karst.) G.Z. Zhao, Xing Z. Liu & W.P. Wu; Helicofilia irregularis (P.M. Kirk) G.Z. Zhao, Xing Z. Liu & W.P. Wu. Another three new combinations, Helicoma casuarinae (Matsush.) G.Z. Zhao, Xing Z. Liu & W.P. Wu, Helicoma hyalospora (Rao & D. Rao) G.Z. Zhao, X.Z. Liu & W.P. Wu and Slimacomyces isiola (R.T. Moore) G. Z. Zhao, and a new name, Helicoma palmarum G.Z. Zhao, Xing Z. Liu & W.P. Wu are introduced based on the literature. All species are described, illustrated and discussed. Diagnostic characteristics and keys for most helicosporous genera are provided. Drepanospora is considered to be synonym of Helicosporium and Troposporella and Helicosporina are dealt with as the synonyms of Helicoma. A third group of Xenosporium without secondary conidia was found and four new species are described in this group. Several specimens were unavailable for study and are listed as doubtful records.
This listing covers the period March 1, 1997 through to April 30, 1997. Citations are arranged in groups which roughly correspond with the British Mycological Society's Special Interest Committees. All correspondence about this item should be addressed to the Executive Editor. Reprints of this feature will not be available.
A new species of Everhartia, E. phoenicis, is described and illustrated. The fungus was collected on living leaves of Phoenix hanceana in Twisk, Tai Mo Shan, Hong Kong. Everhartia phoenicis is associated with yellow spots on living leaves and rachides of the host, and is the only species in the genus known to be pathogenic. It differs from other species of Everhartia in producing symmetric, hyaline, aseptate, horseshoe-shaped conidia. Everhartia phoenicis is compared with other species in the genus. Everhartia is very similar toDelortia and the differences between these two genera are discussed. Two species of Everhartia, E. aquatica and E. tumidoapicis are transferred from Delortia.
