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Scientists have long known that nodulation is important to plant health. Nodulation occurs when nodules, which form on the roots of plants (primarily legumes), form a symbiotic relationship with nitrogen-fixing bacteria that deliver nutrients to the plant. This process is a key part of sustainable agriculture and makes legumes an important source of protein for much of the world. However, recent research from RWTH Aachen University shows that nodulation might positively impact the plant's microbiome in other ways.
This research, published in Molecular Plant-Microbe Interactions in September, explored the relationship between nodulation and systemic resistance, the process through which plants protect themselves against pathogens. Focusing on pea and Medicago truncatula (a legume native to the Mediterranean), the scientists discovered that nodulation primes these plants to accumulate higher levels of salicylic acid after powdery...
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