Ascus
Definition
A microscopic, sac-like reproductive cell characteristic of fungi belonging to the Ascomycetes class, inside of which endogenous spores called ascospores are formed (typically eight) following a sexual process. This structural feature plays an essential role in fungal taxonomic classification and biological dispersal.
Bilingual Equivalents
- Ascus
- Spore sac
Grammatical & Source Details
| Inflection Type | Feminine noun, with regular structural singular, plural, and case variations. |
| Formation | Scholarly loanword from modern biological Latin, originally derived from ancient Greek signifying a leather bag or wine-skin. |
| Spelling / Pronunciation | [ˈas.kə] |
| Source | Lexicon of Invertebrate Pathology and Fungal Biology Standards |
Contextual Usage Examples
RO: La analiza microscopică a parazitului, biologul a observat o ască alungită ce conținea spori maturi.
EN: During the microscopic analysis of the parasite, the biologist observed an elongated ascus containing mature spores.
RO: Fiecare ască se deschide printr-un por terminal pentru a elibera ascosporii în mediul înconjurător.
EN: Each ascus opens through a terminal pore to release the ascospores into the surrounding environment.
RO: Peretele celular rigid protejează această ască împotriva uscăciunii și a variațiilor bruște de temperatură.
EN: The rigid cell wall protects this ascus against dryness and sudden variations in temperature.
Idioms & Phrases
Aparat de ască / Ascus apparatus
RO: Complex structural format din asce și celule sterile adiacente, responsabil de mecanismul de ejectare a sporilor.
EN: A structural complex formed by asci and adjacent sterile cells, responsible for the spore ejection mechanism.
Ască bitunicată / Bitunicate ascus
RO: Tip specific de celulă cu perete dublu, unde învelișul exterior se rupe pentru a permite extensia celui interior.
EN: A specific type of cell with a double wall, where the outer sheath ruptures to allow the expansion of the inner one.
Formare de ască / Ascus formation
RO: Procesul citologic complex de fuziune nucleară și meioză care duce la apariția sacului sporifer.
EN: The complex cytological process of nuclear fusion and meiosis leading to the appearance of the spore sac.
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