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Nodule Shape of M. truncatula Plants Inoculated with a NF-Overproducing S. meliloti Strain.
(A) Photographs of nodules on M. truncatula R108 roots inoculated with S. meliloti 1021 or S. meliloti 1021 (pEK327). Plants were harvested at 20 dpi. Bars = 2 mm.
(B) Quantification of different types of nodules. Data indicate means (±se) from 12 plants per strain. S. meliloti 1021 (pEK327) induced significantly more nodules than the parent strain 1021 (Kruskal-Wallis test, P ≤ 0.05).
