Ultrastructure and Cytochemistry of Basidial and Basidiospore Development

McLaughlin, David J.

doi:10.1007/978-1-4612-5677-9_3

Cited by 42 publications

(47 citation statements)

References 79 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5). Electron microscopy reveals intricate organelle structures mainly comprising mitochondria (cellular -power plants‖, where respiration and the generation of chemical energy takes place), ribosomes (-protein factories‖), and nuclei, which carry the genetic material (DNA > genes > chromosomes) (Hess & Weber 1976, McLaughlin 1982. All these organelles -cooperate‖ so as to allow germination, i.e.…”

Section: Intrinsic Values: Spore Contentsmentioning

confidence: 99%

Gone with the wind – a review on basidiospores of lamellate agarics

Halbwachs¹

2015

Mycosphere

View full text Add to dashboard Cite

Field mycologists have a deep understanding of the morphological traits of basidiospores with regard to taxonomical classification. But often the increasing evidence that these traits have a biological meaning is overlooked. In this review we have therefore compiled morphological and ecological facts about basidiospores of agaricoid fungi and their functional implications for fungal communities as part of ecosystems.Readers are introduced to the subject, first of all by drawing attention to the dazzling array of basidiospores, which is followed by an account of their physical and chemical qualities, such as size, quantity, structure and their molecular composition. Continuing, spore generation, dispersal and establishment are described and discussed.Finally, possible implications for the major ecological lifestyles are analysed, and major gaps in the knowledge about the ecological functions of basidiospores are highlighted.

show abstract

Section: Intrinsic Values: Spore Contentsmentioning

confidence: 99%

Gone with the wind – a review on basidiospores of lamellate agarics

Halbwachs¹

2015

Mycosphere

View full text Add to dashboard Cite

show abstract

“…Basidia are the only C. cinereus cells that express developmental comittment. Probasidia can easily be arrested in development (86,277,285), but once meiosis is initiated, maturation of basidia is an autonomous, endotrophic process (86,314) (Fig. 10).…”

Section: Developmental Processes In the Basidiamentioning

confidence: 99%

“…10). The basidium usually arises as the terminal cell of a hyphal branch and is separated from the subjacent cell by a dolipore septum with a wellformed septal cap at the side of the subjacent cell (312,314). The cytoplasm in the probasidia is relatively simple with numerous free ribosomes, few vacuoles, mitochondria, and limited ER.…”

Section: Developmental Processes In the Basidiamentioning

confidence: 99%

“…An increase in the amount of rough ER is observed at the end of prophase I, and ER extends throughout the cell in the postmeiotic basidium. Usually, as basidiospores form, a vacuole at the base of the basidium gradually expands to fill the cell (169,314 Basidiospore formation starts with the development of sterigmata. These begin as broad bumps and subsequently elongate in a manner reminiscent of hyphal tip growth.…”

Section: Developmental Processes In the Basidiamentioning

confidence: 99%

“…1). This potential ranges from the fruiting body (carpophore, basidiocarp, basidiome), with the meiotic basidiospores localized within the gills (314,338) (see below), to mitotic aerial spores (oidia) and mitotic submerged spores (chlamydospores) to the multicellular structures of sclerotia, mycelial cords, pseudorhizas and rockeries (56,60,171,261,371,385) (see below). There is considerable flexibility in the shapes formed and in when and where these different organs develop (89,91,171,463; U. Kües, J. D. Granado, Y. Liu, E. Polak, and M. Aebi, unpublished data; E. Polak, M. Aebi, and U. Kües, submitted for publication).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Life History and Developmental Processes in the BasidiomyceteCoprinus cinereus

Kües

2000

Microbiol Mol Biol Rev

435

336

View full text Add to dashboard Cite

SUMMARY Coprinus cinereus has two main types of mycelia, the asexual monokaryon and the sexual dikaryon, formed by fusion of compatible monokaryons. Syngamy (plasmogamy) and karyogamy are spatially and temporally separated, which is typical for basidiomycetous fungi. This property of the dikaryon enables an easy exchange of nuclear partners in further dikaryotic-monokaryotic and dikaryotic-dikaryotic mycelial fusions. Fruiting bodies normally develop on the dikaryon, and the cytological process of fruiting-body development has been described in its principles. Within the specialized basidia, present within the gills of the fruiting bodies, karyogamy occurs in a synchronized manner. It is directly followed by meiosis and by the production of the meiotic basidiospores. The synchrony of karyogamy and meiosis has made the fungus a classical object to study meiotic cytology and recombination. Several genes involved in these processes have been identified. Both monokaryons and dikaryons can form multicellular resting bodies (sclerotia) and different types of mitotic spores, the small uninucleate aerial oidia, and, within submerged mycelium, the large thick-walled chlamydospores. The decision about whether a structure will be formed is made on the basis of environmental signals (light, temperature, humidity, and nutrients). Of the intrinsic factors that control development, the products of the two mating type loci are most important. Mutant complementation and PCR approaches identified further genes which possibly link the two mating-type pathways with each other and with nutritional regulation, for example with the cAMP signaling pathway. Among genes specifically expressed within the fruiting body are those for two galectins, β-galactoside binding lectins that probably act in hyphal aggregation. These genes serve as molecular markers to study development in wild-type and mutant strains. The isolation of genes for potential non-DNA methyltransferases, needed for tissue formation within the fruiting body, promises the discovery of new signaling pathways, possibly involving secondary fungal metabolites.

show abstract

Ultrastructure of the Metabasidium of Auricularia Fuscosuccinea

McLaughlin

1980

American J of Botany

Self Cite

View full text Add to dashboard Cite

Maturation of the metabasidium of Auricularia fuscosuccinea was followed with light microscopy and transmission electron microscopy. The basidium was divided into four compartments by septa which developed centripetally as in hyphae. Each septum formed a septal pore apparatus with imperforate pore caps. A band of electron‐dense material was situated in the middle of the septal pore. There was a large increase in the volume of cytoplasm, excluding vacuoles, in each compartment during sterigmal outgrowth. Compartments were evacuated in basipetal sequence and vacuole enlargement began at the base of a compartment only when sterigmal formation was well advanced. The septal pore apparatus was intact until late in maturation of a compartment when septal swellings occluded the pore. The metabasidial wall was differentiated from those of other hymenial and subhymenial cells. The pattern of basidial maturation is compared with that in other phragmobasidiate and holobasidiate fungi. Use of the septal pore apparatus for phylogenetic and taxonomic purposes is discussed, as is the concept of primary and adventitious septa.

show abstract

Ultrastructure and Cytochemistry of Basidial and Basidiospore Development

Cited by 42 publications

References 79 publications

Gone with the wind – a review on basidiospores of lamellate agarics

Gone with the wind – a review on basidiospores of lamellate agarics

Life History and Developmental Processes in the BasidiomyceteCoprinus cinereus

Ultrastructure of the Metabasidium of Auricularia Fuscosuccinea

Contact Info

Product

Resources

About