Control of nitrogen fixation in bacteria that associate with cereals

MH Ryu, J Zhang, T Toth, D Khokhani, BA Geddes… - Nature …, 2020 - nature.com
Legumes obtain nitrogen from air through rhizobia residing in root nodules. Some species of
rhizobia can colonize cereals but do not fix nitrogen on them. Disabling native regulation …

Biological nitrogen fixation in maize: optimizing nitrogenase expression in a root-associated diazotroph

SE Bloch, R Clark, SS Gottlieb, LK Wood… - Journal of …, 2020 - academic.oup.com
Plants depend upon beneficial interactions between roots and root-associated
microorganisms for growth promotion, disease suppression, and nutrient availability. This …

Host plant genome overcomes the lack of a bacterial gene for symbiotic nitrogen fixation

T Hakoyama, K Niimi, H Watanabe, R Tabata… - Nature, 2009 - nature.com
Homocitrate is a component of the iron–molybdenum cofactor in nitrogenase, where
nitrogen fixation occurs,. NifV, which encodes homocitrate synthase (HCS), has been …

Major cereal crops benefit from biological nitrogen fixation when inoculated with the nitrogen‐fixing bacterium Pseudomonas protegens Pf‐5 X940

AR Fox, G Soto, C Valverde, D Russo… - Environmental …, 2016 - Wiley Online Library
A main goal of biological nitrogen fixation research has been to expand the nitrogen‐fixing
ability to major cereal crops. In this work, we demonstrate the use of the efficient nitrogen …

Engineered plant control of associative nitrogen fixation

TL Haskett, P Paramasivan… - Proceedings of the …, 2022 - National Acad Sciences
Engineering N2-fixing symbioses between cereals and diazotrophic bacteria represents a
promising strategy to sustainably deliver biologically fixed nitrogen (N) in agriculture. We …

The Nodule Microbiome: N2-Fixing Rhizobia Do Not Live Alone

P Martínez-Hidalgo, AM Hirsch - Phytobiomes Journal, 2017 - Am Phytopath Society
For decades, rhizobia were thought to be the only nitrogen-fixing inhabitants of legume
nodules, and biases in culture techniques prolonged this belief. However, other bacteria …

Are we there yet? The long walk towards the development of efficient symbiotic associations between nitrogen-fixing bacteria and non-leguminous crops

VCS Pankievicz, TB Irving, LGS Maia, JM Ané - BMC biology, 2019 - Springer
Nitrogen is an essential element of life, and nitrogen availability often limits crop yields.
Since the Green Revolution, massive amounts of synthetic nitrogen fertilizers have been …

Establishing nitrogen-fixing symbiosis with legumes: how many rhizobium recipes?

C Masson-Boivin, E Giraud, X Perret, J Batut - Trends in microbiology, 2009 - cell.com
Rhizobia are phylogenetically disparate α-and β-proteobacteria that have achieved the
environmentally essential function of fixing atmospheric nitrogen (N 2) in symbiosis with …

Metabolic control of nitrogen fixation in rhizobium-legume symbioses

CCM Schulte, K Borah, RM Wheatley, JJ Terpolilli… - Science …, 2021 - science.org
Rhizobia induce nodule formation on legume roots and differentiate into bacteroids, which
catabolize plant-derived dicarboxylates to reduce atmospheric N2 into ammonia. Despite …

Biological nitrogen fixation in cereal crops: Progress, strategies, and perspectives

K Guo, J Yang, N Yu, L Luo, E Wang - Plant Communications, 2023 - cell.com
Nitrogen is abundant in the atmosphere but is generally the most limiting nutrient for plants.
The inability of many crop plants, such as cereals, to directly utilize freely available …