摘要:

SUMMARYLigiella rodrigueziana, a new genus and species for the Clathraceae, is described from humus and rotten wood as its natural substrate. The receptacle is formed by five arms, although cross sections of unopened eggs show four or five. Anatomical studies show that the receptacle ofL. rodriguesianaoriginates from primordial tissue, above the rhizomorph, that develops around the gleba. Initially it is a single unit which later branches into four or five arms, smooth externally and chambered internally. Each arm bears a well-defined glebiferous tissue in its internal face. The gleba is divided into a number of units corresponding to the number of arms. As the fruiting body develops, the compound gleba remains in place on the glebiferous tissue at the upper half of the arms. A medullar prosenchymatous tissue traverses the gleba in the unopened eggs. The fruiting bodies are joined by stolon-like rhizomorphs, and have an aromatic, licoricelike, nonphalloid odor.

ISSN:0027-5514    

DOI:10.1080/00275514.1980.12021187

出版商:Taylor&Francis    

年代:1980

数据来源: Taylor

摘要:

SUMMARYGrowth responses ofAlternariasp.,Cladosporium herbarum, Dendryphiella salina, Monodictys pelagica, Stachybotrys atraandZalerion maritimumto temperature,pH, light and dark were studied. Temperature optimum range was generally from 20–30 C; a slightly acid medium enhanced growth; with the exception ofM. pelagica, which grew better in light andS. atrawhich grew better in the dark, there was little difference between the growth of the fungi in light and in dark.

ISSN:0027-5514    

DOI:10.1080/00275514.1980.12021188

出版商:Taylor&Francis    

年代:1980

数据来源: Taylor

摘要:

SUMMARYCultural features and morphology of 11 isolates of the hyphomyceteHirsutella thompsonii, an important pathogen of various eriophyoid mites, are described and illustrated. Three morphologically distinct groups ofH. thompsoniiwere distinguished and accordingly three varieties are proposed:H. thompsoniivar.thompsonii, var.vinaceaand var.synnematosa.The varietyvinaceais characterized by vinaceous colonies and a different host,Acalitus vaccinii.The strains accommodated in the var.synnematosawere isolated fromEriophyesspp. and related genera. In fresh culture they produce cream-colored cylindrical synnemata, bearing two kinds of phialides: (1) single phialides with solitary conidia and (2) densely crowded phialides with catenulate conidia. In all three varieties two different conidiogenous structures are formed: (1) solitary often proliferating phialides producing one or more globose, verrucose conidia and (2) polyblastic conidiogenous cells with smooth-walled, subglobose to ellipsoidal conidia. AlthoughH. thompsoniidiffers in some morphological characters from other species in the genus, its maintenance inHirsutellais proposed.

ISSN:0027-5514    

DOI:10.1080/00275514.1980.12021189

出版商:Taylor&Francis    

年代:1980

数据来源: Taylor

摘要:

SUMMARYDistinct cytological changes characterize the development ofAphanomycesoogonia and oospores in alfalfa roots. Evidence for gametangial meiosis and development of dense-body vacuoles into fingerprint vacuoles is reported. The contents of the entire oogonium develop into a single oosphere. Fertilization and karyogamy trigger rapid changes in the structure and distribution of cytoplasmic components in the developing oospore. Periplasm is not formed. Fingerprint vacuoles fuse to form membrane-bounded reserve globules in the center of the oospore while lipid bodies congregate toward the oospore periphery. A thick oospore wall develops as a bipartite structure that becomes irregular in outline as the oospore cytoplasm condenses.

ISSN:0027-5514    

DOI:10.1080/00275514.1980.12021190

出版商:Taylor&Francis    

年代:1980

数据来源: Taylor

摘要:

SUMMARYA new genus and species of corticolous Myxomycetes,Trabrooksia applattata, is characterized by its flattened plasmodiocarps and depressed sporangia, glossy to iridescent peridium, limeless fructifications, subparallel arrangement of the hyaline, mostly unbranched capillitial threads, and the dark color of the spores. It is tentatively placed in the Didymiaceae but with further study may require a separate family. An updated key to the genera of the Didymiaceae is provided to aid in the identification of this taxon.

ISSN:0027-5514    

DOI:10.1080/00275514.1980.12021191

出版商:Taylor&Francis    

年代:1980

数据来源: Taylor

ISSN:0027-5514    

DOI:10.1080/00275514.1980.12021192

出版商:Taylor&Francis    

年代:1980

数据来源: Taylor

ISSN:0027-5514    

DOI:10.1080/00275514.1980.12021193

出版商:Taylor&Francis    

年代:1980

数据来源: Taylor

ISSN:0027-5514    

DOI:10.1080/00275514.1980.12021194

出版商:Taylor&Francis    

年代:1980

数据来源: Taylor

ISSN:0027-5514    

DOI:10.1080/00275514.1980.12021195

出版商:Taylor&Francis    

年代:1980

数据来源: Taylor

ISSN:0027-5514    

DOI:10.1080/00275514.1980.12021196

出版商:Taylor&Francis    

年代:1980

数据来源: Taylor