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The role of vesicular-arbuscular mycorrhizal (VAM) colonization on calcium uptake was studied under different levels of moisture stress. Pots maintained at different moisture levels were given water containing known amount of radioactive calcium. The radioactivity in different parts of the plant was assessed 60 h after giving 45Ca to the soil. High 45Ca activity was present in all parts of VAM plants compared to non-mycorrhizal plants at all levels of moisture stress.
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