Journal
CELLS
Volume 10, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/cells10051012
Keywords
legume-rhizobial symbiosis; microtubules; symbiosome; bacteroid; indeterminate nodules; immunolocalization; Vicia sativa; Galega orientalis; Cicer arietinum
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Funding
- Russian Foundation for Basic Research [20-316-70004]
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The tubulin cytoskeleton plays a crucial role in establishing legume-rhizobial symbiosis, with differences in microtubule patterns across different legume species potentially linked to variations in bacteroid morphology.
The tubulin cytoskeleton plays an important role in establishing legume-rhizobial symbiosis at all stages of its development. Previously, tubulin cytoskeleton organization was studied in detail in the indeterminate nodules of two legume species, Pisum sativum and Medicago truncatula. General as well as species-specific patterns were revealed. To further the understanding of the formation of general and species-specific microtubule patterns in indeterminate nodules, the tubulin cytoskeleton organization was studied in three legume species (Vicia sativa, Galega orientalis, and Cicer arietinum). It is shown that these species differ in the shape and size of rhizobial cells (bacteroids). Immunolocalization of microtubules revealed the universality of cortical and endoplasmic microtubule organization in the meristematic cells, infected cells of the infection zone, and uninfected cells in nodules of the three species. However, there are differences in the endoplasmic microtubule organization in nitrogen-fixing cells among the species, as confirmed by quantitative analysis. It appears that the differences are linked to bacteroid morphology (both shape and size).
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