(n.) One of the spores contained in the asci of lichens and fungi. [See Illust. of Ascus.]
Example Sentences:
(1) To isolate single spores from adhesive ascospores and the mycelium, the suspension was sucked through a combination of sintered-glass plates with different pore sizes.
(2) (2) Coincident disomy increased as a function of the mean number of disomic chromosomes per spore in each dyad, but this increase differed functionally from that expected if coincident disomy in the two ascospores were a simple, meiotically independent, concomitant of multiple disomy.
(3) Fungi of the class Pyrenomycetes (Ascomycotina) form a morphological series ranging from those that shoot ascospores (sexual spores) forcibly from the ascus (spore sac) to fungi that ooze ascospores or have no obvious mechanism for ascospore release.
(4) SPR6 is inessential for sporulation; mutants that lack SPR6 activity sporulate normally and produce viable ascospores.
(5) Complementation tests defined two new genetic loci (spo19 and spo20) essential for ascospore formation, in addition to the 18 known spo loci (Bresch et al.
(6) The results obtained demonstrate that the REC46 gene product modulates mitotic chromosomal stability and recombination and is essential for sporulation (meiosis and ascospore formation).
(7) The mutual attraction of conidia to protoperithecia of the opposite mating type was studied genetically in crosses where a mixture of conidia from two different strains, one of which was marked by an ascospore color mutant gene tan spore (ts), was applied to protoperithecia.
(8) Trehalose is located in the cytoplasm, whereas trehalase resides within the protein and carbohydrate matrix of the innermost major cell wall layer of the ascospore.
(9) Strains of Yarrowia lipolytica forming exclusively spherical ascospores were developed through inbreeding.
(10) The production of diploid ascospores in these strains is apparently under polygenic control.
(11) Electrophoretic measurements on Saccharomyces cerevisiae ascospores indicated the presence of a surface protein layer which can be removed by papain, chymotrypsin or 8 m urea.
(12) Electrophoretic analysis of fruiting body extracts from Neurospora reveals a characteristic protein, apparently absent in vegetative structures and ascospores, and which increases markedly in relative concentration after fertilization.
(13) Due to the characteristic shape of the ascus and ascospores, T. burgeffiana is to be considered a synonym of M. pulcherrima.
(14) The segregation pattern of this character obtained by random spore analysis of the ascospores derived from the cross of the two strains strongly suggests that the resistance to tetracycline is under mitochondrial control.
(15) Potassium sorbate, sodium benzoate, sulfur dioxide, and diethylpyrocarbonate (DEPC) were tested for their effectiveness in preventing the outgrowth of Byssochlamys nivea Westling ascospores.
(16) In this case germination of the binucleate ascospore is not preceded by a mitosis.
(17) Transcripts for four of the genes were detected in all three spore types; mRNA for the fifth gene was detected in macroconidia and microconidia but not in ascospores.
(18) Further implications of this study suggest the importance of extensive ascospore analysis when investigating the perfect states of fungi in order to avoid creating unwarranted new species.
(19) The species forming asci from conjugating gametangial cells and having ellipsoidal ascospores are transferred to Dipodascus.
(20) Development of the ascospores of Sporopachydermia lactativora and S. cereana was studied in ultrathin sections.
Basidiospore
Definition:
(n.) A spore borne by a basidium.
Example Sentences:
(1) For C neoformans var gattii it is postulated that the principal infectious propagule is the basidiospore and that exposure to Eucalyptus camaldulensis, the host tree, is required to initiate infection in man and animals.
(2) Ultrastructure of basidiospores and mycelium of Lenzites saepiaria.
(3) Basidiospores have been underreported in the older studies because of difficulties in their identification.
(4) Aerospora of mushrooms and other woodland fungi, mostly basidiospores, occur in temperature zones in June to November, reaching maximum in August and September in quantities comparable to pollen and mould spores.
(5) RAPD markers also served to verify the creation of a hybrid heterokaryon and to analyze meiotic progeny from this new strain: most of the basidiospores displayed RAPD fingerprints identical to that of the parental heterokaryon, although a few selected slow growers were homoallelic at a number of loci that were heteroallelic in the parent, suggesting that they represented rare homokaryotic basidiospores; crossover events between a RAPD marker locus and its respective centromere appeared to be infrequent.
(6) These procedures help identify P. ostreatus spore allergens and allow a greater degree of standardization in the preparation of allergen extracts from basidiospores for use in diagnosis and therapy of fungal allergy.
(7) The one-step prediction error variance was reduced by 88% for Cladosporium spores and by 98% for basidiospores.
(8) Correlations in the occurrence patterns of arthrospore-forming and non-sporulating colonies with those of Coprinus and 'other basidiospores' (excluding Ganoderma) were noted.
(9) Lipids of the aeciospores and basidiospores of C. fusiforme are compared.
(10) Five of the eight patients demonstrated a significant decrease in FEV1 ranging from 20% to 47% after basidiospore-extract challenge.
(11) Continuous air sampling with a Hirst volumetric spore trap over 3 yr has identified basidiospores of Ganoderma applanatum, a bracket fungus, as the most numerous fungal spores in two southern Ontario locations.
(12) Basidiospores of two strains were mononucleate, and yeast cell clones derived from single basidiospores of these two strains were able to complete the sexual life cycle, thus indicating their primary homothallic nature.
(13) Enzymes of polyol metabolism were studied in basidiospore germination of Schizophyllum commune during periods of in vivo arabitol and mannitol pool depletion (growth on glucose-asparagine) and during their subsequent synthesis (growth on acetate-NH+4).
(14) The basidiospores of the produced fruiting bodies yielded the reference monokaryons necessary for physiological, cytological and genetical studies.
(15) During basidiospore germination on either glucose-NH(3) or glucose-glutamate medium, NADP-GDH increased six- to eightfold in specific activity, whereas NAD-GDH was depressed.
(16) The mutants formed smaller neoplasms, produced fewer teliospores, and showed higher frequencies of meiotic failure and lower rates of basidiospore survival than did the wild-type fungus.
(17) The time required for synthesis of the spore components and the effect of different environmental conditions on basidiospore production were studied in the basidiomycete Schizophyllum commune.
(18) These results demonstrate that basidiospore extracts can induce bronchospasm in subjects with asthma who demonstrate IgE antibodies to basidiospore allergens.
(19) This is true even though in previous studies, 32% of atopic patients with respiratory allergies were skin test reactive to basidiospore extracts.
(20) These are Cladosporium, Basidiospores, Aspergillus, and Alternaria-Penicillin families.