noun
filament; protonema; trichome
Biological term for a thread-like structure, especially in plants, algae, or fungi. Protonema is the early filamentous stage of mosses; trichome refers to hair-like outgrowths on plants.
コケ植物の糸状体は、胞子が発芽して最初に形成される。
The protonema of mosses is the first structure formed after spore germination.
葉の表面にある糸状
Trichomes on the leaf surface protect the plant from drying out.
noun
mitochondria
Rare or obsolete synonym for ミトコンドリア. The cross-reference suggests this usage is not standard; modern biology uses ミトコンドリア.
See also: ミトコンドリア
古い文献では、糸状体がミトコンドリアを指すことがある。
In older literature, 糸状体 can refer to mitochondria.
Another term for protonema, more specific to the moss life stage. 糸状体 is broader, covering any filamentous structure.
Compound of 糸状 (thread-like) and 体 (body/structure). The reading しじょうたい follows standard on'yomi. The mitochondria sense likely arose from early microscopic observations describing them as thread-like bodies.