noun
root nodule bacteria
Technical term in botany and microbiology for bacteria that form nitrogen-fixing nodules on legume roots.
根粒菌はマメ科植物の根に共生している。
Root nodule bacteria live symbiotically in the roots of leguminous plants.
Compound of 根粒 (root nodule) + 菌 (bacteria, fungus). The term is a straightforward scientific coinage.