Spermosphere

Region of soil surrounding a germinating seed

In plant science, the spermosphere is the zone in the soil surrounding a germinating seed. The zone is a small area, typically 1–10 mm from the seed, but varying with seed type, the variety of soil microorganisms, the level of soil moisture, and other factors. Within the spermosphere, a range of complex interactions take place among the germinating seed, the soil, and the microbiome. Because germination is a brief process, the spermosphere is transient, but the impact of the microbial activity within the spermosphere can have strong and long-lasting effects on the developing plant.

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