What does zygospore mean?
A zygospore is a specialized, thick-walled spore formed through the fusion of two reproductive cells, or gametes. It occurs in certain fungi and algae and is generally treated as a resting stage: its protective wall helps it remain viable through environmental stresses such as drought, temperature extremes, or unfavorable nutrient conditions. When conditions improve, the zygospore may germinate and resume growth. Although the words zygote and zygospore are related, they refer to different stages or structures. A zygote is the living cell produced when gametes unite, while a zygospore is the durable reproductive structure associated with that union. In general writing, “zygospore” is most likely to appear in scientific descriptions of fungal or algal life cycles, where the distinction between sexual and asexual spore formation is important.
nounA thick-walled resting spore formed by the fusion of two gametes, especially in certain fungi and algae. It is resistant to unfavorable conditions and can later germinate.
- A thick-walled resting spore produced through sexual fusion, especially in certain fungi and algae, that is capable of germinating when conditions become favorable.
"The fungal cells fused to form a thick-walled zygospore that survived the dry season."
"The fungal cells fused to form a thick-walled zygospore that survived the dry season."
"Researchers observed zygospore formation in the culture before the organism began to germinate."
The regular plural is used when referring to multiple resting spores or to multiple occurrences of zygospore formation.
"Several zygospores germinated after the conditions improved."
A zygospore is a microscopic survival capsule, built to outlast heat, cold, drought, and the passage of time.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of zygospore
Zygospore combines zygo-, from Greek zygōn meaning “yoke,” with spore, from Greek spora meaning “sowing” or “seed.” The zygo- element also underlies words such as zygote and zygomatic, while spore belongs to a family of scientific terms describing reproductive bodies.
How zygospore is actually used
This is a specialized biological term used chiefly in mycology, algology, and related scientific literature. It is more precise than the general terms “resting spore” and “sexual spore” because it specifically denotes a spore formed through gametic fusion.
Easily confused with zygospore
A zygote is the living cell formed by the fusion of two gametes, whereas a zygospore is the usually thick-walled resting structure into which that cell may develop.