Saclike संरचना जिसमें Acospores Ascomycetes के यौन प्रजनन के माध्यम से गठित किया जाता है

Noun:

ASCUS,

asci's Usage Examples:

Among the simplest cases are the sheet-like aggregates of sporogenous hyphae in Puccinia, Uromyces, 'c., or of basidia in Exobasidium, Corticium, 'c., or of asci in Exoascus, Ascocorticium, 'c. In the former, where the layer is small, it is often termed a sorus, but where, as in the latter, the sporogenous layer is extensive, and spread out more or less sheet-like on the supporting tissues, it is more frequently termed a hymenium.

In young asci a similar fusion of two nuclei occurs, and also in basidia, in each case the nucleus of the ascus or of the basidium resulting from the fusion subsequently giving rise by division to the nuclei of the ascospores and basidiospores respectively.

The reproductive spores are borne in sacs (asci) which form a dense layer on the surface, appearing like a bloom in July; they are scattered by the wind and propagate the disease.

The paraphyses branch and form a network (capillitium) over the asci, the capillitium and ejected spores forming a long persistent powdery mass (mazaedium).

b, Asci (thecae) with bilocular spores.

In these forms gonidia are found in connexion with the young fruit; such algal cells undergo numerous divisions becoming very small in size and penetrating into the hymenium among the asci and paraphyses.

The spores are ejected from the apothecia and peri thecia as in the fungi by forcible ejacu lation from the asci.

The hypothecium is the basal part of the apothecium on which the hymenium is borne; the latter consists of asci (thecae) with ascospores, and paraphyses.

Fructification of the fungus, entire and in section; the latter shows the asci containing ascospores, much enlarged.

ascophorous, producing asci; ascospore, the spore (or sporule) developed in the ascus; ascogonium, the organ producing it, 'c.

asci's Meaning':

saclike structure in which ascospores are formed through sexual reproduction of ascomycetes