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NITROGEN FIXATION

Light regulation of nodulation

Nature Plants volume 7, page 1437 (2021)Cite this article

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Root nodules do not form when legumes are kept in the dark. However, working with soybeans, the researchers noticed that nodulation was more substantial when the plants were illuminated with blue rather than red light, even though both regimes supported photosynthesis equally well. A series of experiments involving grafting together shoots and roots of plants that either lacked or overexpressed various blue light sensors showed that CRY1 was needed in leaves for nodulation to occur in roots. The researchers further showed that, of the many proteins whose production is controlled by CRY1, two were required for roots to form nodules. These were a TGACG-motif binding factor and FLOWERING LOCUS T.

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Reference

  • Wang, T. et al. Light-induced mobile factors from shoots regulate rhizobium-triggered soybean root nodulation. Science 374, 65–71 (2021).

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  1. Nature Plants https://www.nature.com/nplants

    Chris Surridge

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  1. Chris Surridge
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Correspondence to Chris Surridge.

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Surridge, C. Light regulation of nodulation. Nat. Plants 7, 1437 (2021). https://doi.org/10.1038/s41477-021-01022-9

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  • DOI: https://doi.org/10.1038/s41477-021-01022-9

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