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Updated: Nov 8, 2025
07:02
Polysome Purification from Soybean Symbiotic Nodules
Published on: July 1, 2022
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Localization of sucrose synthase in soybean root nodules.
A J Gordon1, B J Thomas1, P H S Reynolds2
1AFRC Institute of Grassland and Environmental Research, Welsh Plant Breeding Station, Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB.
The New Phytologist
|April 20, 2021
Summary
Sucrose synthase, crucial for soybean nodules, is mainly in the cytoplasm. Its higher concentration in uninfected cells suggests a role in carbohydrate metabolism and nodule function.
Area of Science:
- Plant biology
- Biochemistry
- Molecular biology
Background:
- Soybean nodules are vital for nitrogen fixation.
- Sucrose synthase plays a key role in carbohydrate metabolism within plant tissues.
Purpose of the Study:
- To investigate the subcellular localization of sucrose synthase in soybean nodule cells.
- To understand the distribution of sucrose synthase in relation to nodule structure and function.
Main Methods:
- Immunogold labelling using polyclonal antibodies against sucrose synthase.
- Microscopic analysis of soybean nodule sections.
Main Results:
- Sucrose synthase is exclusively localized in the cytoplasm of soybean nodule cells.
- Higher sucrose synthase labelling intensity observed in the cytosol of uninfected interstitial cells compared to infected cells.
- Variable labelling intensity in cortical cells, with high levels in the vascular endodermis and cells between the vascular bundle and infected region.
Conclusions:
- The distribution of sucrose synthase suggests a role in managing carbohydrate supply and metabolism within soybean nodules.
- Differential localization may reflect distinct metabolic roles in infected versus uninfected nodule cells.
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