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Esta es la versión de autor del artículo publicado en:This is an author produced version of a paper published in: sensitive to Cu excess than those of soybean, with the nodulation process, N 2 fixation, and the ultrastructure of bacteroids more strongly affected. A less effective antioxidative stress response against Cu was also seen in white lupin than in soybean nodules: the excess copper treatment induced a smaller increase in the total thiol content and ascorbate peroxidase activity in white lupin nodules than in soybean nodules, and promoted a greater reduction in catalase activity.