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Investigating nodulation in legumes is essential for understanding plant development, the evolution of symbiosis and the plants response to developmental change. Further study of nodulation and nitrogen fixation may lead to a reduction in the need for nitrogen based fertilisers, which would benefit farmers and the environment.
Feb 16, 2020 · Not only do they provide atmospheric oxygen, but, in the case of legumes, they can transform atmospheric nitrogen gas to ammonia, which can then be consumed by humans. How does this happen, you ask? It’s all thanks to bacteria and the process of nodulation. Deep Breaths Nitrogen is an incredibly important element for life on earth.
May 28, 2018 · Low temperatures typically delay nodulation and reduce symbiotic activity through the dissimilation of sugars in the nodule (Hansen, 2017). Tropical legumes are particularly sensitive to low temperatures below 25 °C, which can delay early nodulation events and reduce nitrogen fixation efficiency (Zhang, Lynch, & Smith, 1995).
- Brett J. Ferguson, Céline Mens, April H. Hastwell, Mengbai Zhang, Huanan Su, Candice H. Jones, Xiton...
- 2019
However, it is also important to go back to the field and look for wild legumes that grow well in extreme environments (Table 5). The only conditions where nodulated legumes do not seem to occur naturally is in sea water, although some may grow well in saline areas and others submerged in fresh water.
Mar 3, 2014 · Analysis of loss- and gain-of-function nodulation mutations, particularly in the model legumes M. truncatula and L. japonicus, has identified components in the signalling pathway that leads to nodule development (Figure 1). Nod-factor binding to a receptor complex at the plasma membrane leads to activation of perinuclear calcium spiking, which activates a kinase that activates transcription of ...
Feb 21, 2022 · Members of the NLP family of transcriptional factors suppress nodulation in legumes by orchestrating gene expression in response to N supply. Despite recent advances in understanding the genetic cascades required for nodulation, the molecular mechanisms underlying the switch between N acquisition strategies remain unclear.
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Using genetic and genomic approaches, many components acting in the regulation of nodulation have now been identified. Discovering and functionally characterizing these components can provide genetic targets and polymorphic markers that aid in the selection of superior legume cultivars and rhizobia strains that benefit agricultural sustainability and food security.
