What is it about?
Nitrogen is the most important nutrient for plant growth. Understanding symbiotic nitrogen fixation during legume-rhizobium interaction is an important step towards reduce N-fertilization. Sulfur is crucual for symbiotic root nodule formation and fuctioning. This studie shows that nodules can develop in roots that are not directly supplied with sulfur but through a long distance transport of the root system, connected to sulfate resources.
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Why is it important?
Symbiotic nitrogen fixation is enabled under sufur depletion if at last part of the plant roots (also not in symbiont interaction) has access to sulfate. This systemic long distance sulfate transport enables symbiosis on other parts of the root system and thus accessability to nitrogen under suboptimal nutritional conditions.
Perspectives
It is crucial to further understanding the role of sufur nutrition towards improved symbiotic nitrogen fixation (SNF). Legume plant breeding strategies may concider soil factors such as sufate availability in order to gain best SNF and therefor increase seed yield by avoiding N-fertilization at the same time.
Prof. Dr. Stefanie Wienkoop
University of Vienna
Read the Original
This page is a summary of: Systemic long-distance sulfur transport and its role in symbiotic root nodule protein turnover, Journal of Plant Physiology, June 2024, Elsevier,
DOI: 10.1016/j.jplph.2024.154260.
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