Harnessing biological nitrogen fixation in plant leaves

Zhu, Yong-Guan; Peng, Jingjing; Chen, Cai; Xiong, Chao; Li, Shule; Ge, Anhui; Wang, Ertao; Liesack, Werner

doi:10.1016/j.tplants.2023.05.009

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Harnessing biological nitrogen fixation in plant leaves

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Liesack, Werner
Department-Independent Research Group Methanotrophic Bacteria, and Environmental Genomics/Transcriptomics, Max Planck Institute for Terrestrial Microbiology, Max Planck Society;

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https://doi.org/10.1016/j.tplants.2023.05.009
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Citation

Zhu, Y.-G., Peng, J., Chen, C., Xiong, C., Li, S., Ge, A., et al. (2023). Harnessing biological nitrogen fixation in plant leaves. Trends in Plant Science, 28(12), 1391-1405.

Cite as: https://hdl.handle.net/21.11116/0000-000D-3D04-B

Abstract

The importance of biological nitrogen fixation (BNF) in securing food production for the growing world population with minimal environmental cost has been increasingly acknowledged. Leaf surfaces are one of the biggest microbial habitats on Earth, harboring diverse free-living N2-fixers. These microbes inhabit the epiphytic and endophytic phyllosphere and contribute significantly to plant N supply and growth. Here, we summarize the contribution of phyllosphere-BNF to global N cycling, evaluate the diversity of leaf-associated N2-fixers across plant hosts and ecosystems, illustrate the ecological adaptation of N2-fixers to the phyllosphere, and identify the environmental factors driving BNF. Finally, we discuss potential BNF engineering strategies to improve the nitrogen uptake in plant leaves and thus sustainable food production.